From 2c3758b01aa6f11382d2b018614b5d48ecf30350 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Wed, 16 Jul 2014 09:11:21 +0900 Subject: [PATCH 001/272] ARM: shmobile: sh73a0: Remove spurious 0x from SCIFB clock name A stray '0x' crept into a0f7e7496d56ac2d ("ARM: shmobile: sh73a0: add CMT1 clock support for DT"). This patch removes it. This change should not have any run-time affect at this time as the clock in question is used by a SCIF device that is not enabled by default. Reported-by: Sergei Shtylyov Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/clock-sh73a0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c index 0d77f652f30c..b0993a52e66d 100644 --- a/arch/arm/mach-shmobile/clock-sh73a0.c +++ b/arch/arm/mach-shmobile/clock-sh73a0.c @@ -644,7 +644,7 @@ static struct clk_lookup lookups[] = { CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP207]), /* SCIFA5 */ CLKDEV_DEV_ID("e6cb0000.serial", &mstp_clks[MSTP207]), /* SCIFA5 */ CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP206]), /* SCIFB */ - CLKDEV_DEV_ID("0xe6c3000.serial", &mstp_clks[MSTP206]), /* SCIFB */ + CLKDEV_DEV_ID("e6c3000.serial", &mstp_clks[MSTP206]), /* SCIFB */ CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */ CLKDEV_DEV_ID("e6c40000.serial", &mstp_clks[MSTP204]), /* SCIFA0 */ CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */ From 3d0763c006f8da1b44a9f5f9a21187f5b8f674f4 Mon Sep 17 00:00:00 2001 From: "Jorge A. Ventura" Date: Sat, 9 Aug 2014 16:06:58 -0500 Subject: [PATCH 002/272] spi/omap-mcspi: Fix the spi task hangs waiting dma_rx The spi hangs waiting the completion of omap2_mcspi_rx_callback. Signed-off-by: Jorge A. Ventura Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-omap2-mcspi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 68441fa448de..352eed7463ac 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -329,7 +329,8 @@ static void omap2_mcspi_set_fifo(const struct spi_device *spi, disable_fifo: if (t->rx_buf != NULL) chconf &= ~OMAP2_MCSPI_CHCONF_FFER; - else + + if (t->tx_buf != NULL) chconf &= ~OMAP2_MCSPI_CHCONF_FFET; mcspi_write_chconf0(spi, chconf); From b8a7a990ed24af7711455fb5347b914cd07ae169 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 8 Aug 2014 09:39:14 +0200 Subject: [PATCH 003/272] s390: wire up seccomp and getrandom syscalls Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/uapi/asm/unistd.h | 4 +++- arch/s390/kernel/compat_wrapper.c | 2 ++ arch/s390/kernel/syscalls.S | 2 ++ 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h index 3802d2d3a18d..9f5b88b32288 100644 --- a/arch/s390/include/uapi/asm/unistd.h +++ b/arch/s390/include/uapi/asm/unistd.h @@ -283,7 +283,9 @@ #define __NR_sched_setattr 345 #define __NR_sched_getattr 346 #define __NR_renameat2 347 -#define NR_syscalls 348 +#define __NR_seccomp 348 +#define __NR_getrandom 349 +#define NR_syscalls 350 /* * There are some system calls that are not present on 64 bit, some diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c index 45cdb37aa6f8..18b4224e8f86 100644 --- a/arch/s390/kernel/compat_wrapper.c +++ b/arch/s390/kernel/compat_wrapper.c @@ -214,3 +214,5 @@ COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, fla COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags); COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags); COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags); +COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char __user *, uargs) +COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags) diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index fe5cdf29a001..e193b9e6dac8 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -356,3 +356,5 @@ SYSCALL(sys_finit_module,sys_finit_module,compat_sys_finit_module) SYSCALL(sys_sched_setattr,sys_sched_setattr,compat_sys_sched_setattr) /* 345 */ SYSCALL(sys_sched_getattr,sys_sched_getattr,compat_sys_sched_getattr) SYSCALL(sys_renameat2,sys_renameat2,compat_sys_renameat2) +SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp) +SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom) From 852ffd0f4e23248b47531058e531066a988434b5 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 8 Aug 2014 17:57:31 +0200 Subject: [PATCH 004/272] s390/kdump: Clear subchannel ID to signal non-CCW/SCSI IPL For CCW and SCSI IPL the hardware sets the subchannel ID and number correctly at 0xb8. For kdump at 0xb8 normally there is the data of the previously IPLed system. In order to be clean now for kdump and kexec always set the subchannel ID and number to zero. This tells the next OS that no CCW/SCSI IPL has been done. Reviewed-by: Sebastian Ott Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/ipl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 633ca7504536..22aac5885ba2 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -2060,6 +2060,13 @@ void s390_reset_system(void (*func)(void *), void *data) S390_lowcore.program_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; + /* + * Clear subchannel ID and number to signal new kernel that no CCW or + * SCSI IPL has been done (for kexec and kdump) + */ + S390_lowcore.subchannel_id = 0; + S390_lowcore.subchannel_nr = 0; + /* Store status at absolute zero */ store_status(); From bcfcbb6bae649c870037cc8c4e2685b2a8927c3d Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 11 Aug 2014 12:20:58 +0200 Subject: [PATCH 005/272] s390: add system information as device randomness The virtual-machine cpu information data block and the cpu-id of the boot cpu can be used as source of device randomness. Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/setup.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index ae1d5be7dd88..82bc113e8c1d 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -61,6 +62,7 @@ #include #include #include +#include #include "entry.h" /* @@ -766,6 +768,7 @@ static void __init setup_hwcaps(void) #endif get_cpu_id(&cpu_id); + add_device_randomness(&cpu_id, sizeof(cpu_id)); switch (cpu_id.machine) { case 0x9672: #if !defined(CONFIG_64BIT) @@ -803,6 +806,19 @@ static void __init setup_hwcaps(void) } } +/* + * Add system information as device randomness + */ +static void __init setup_randomness(void) +{ + struct sysinfo_3_2_2 *vmms; + + vmms = (struct sysinfo_3_2_2 *) alloc_page(GFP_KERNEL); + if (vmms && stsi(vmms, 3, 2, 2) == 0 && vmms->count) + add_device_randomness(&vmms, vmms->count); + free_page((unsigned long) vmms); +} + /* * Setup function called from init/main.c just after the banner * was printed. @@ -901,6 +917,9 @@ void __init setup_arch(char **cmdline_p) /* Setup zfcpdump support */ setup_zfcpdump(); + + /* Add system specific data to the random pool */ + setup_randomness(); } #ifdef CONFIG_32BIT From 7bb1cdbfe2b07d9272b4b132511c82527314b00f Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 11 Aug 2014 14:50:37 +0200 Subject: [PATCH 006/272] s390: wire up memfd_create syscall Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/uapi/asm/unistd.h | 3 ++- arch/s390/kernel/compat_wrapper.c | 1 + arch/s390/kernel/syscalls.S | 1 + 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h index 9f5b88b32288..940ac49198db 100644 --- a/arch/s390/include/uapi/asm/unistd.h +++ b/arch/s390/include/uapi/asm/unistd.h @@ -285,7 +285,8 @@ #define __NR_renameat2 347 #define __NR_seccomp 348 #define __NR_getrandom 349 -#define NR_syscalls 350 +#define __NR_memfd_create 350 +#define NR_syscalls 351 /* * There are some system calls that are not present on 64 bit, some diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c index 18b4224e8f86..faf6caa510dc 100644 --- a/arch/s390/kernel/compat_wrapper.c +++ b/arch/s390/kernel/compat_wrapper.c @@ -216,3 +216,4 @@ COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags); COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char __user *, uargs) COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags) +COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags) diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index e193b9e6dac8..6fe886ac2db5 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -358,3 +358,4 @@ SYSCALL(sys_sched_getattr,sys_sched_getattr,compat_sys_sched_getattr) SYSCALL(sys_renameat2,sys_renameat2,compat_sys_renameat2) SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp) SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom) +SYSCALL(sys_memfd_create,sys_memfd_create,compat_sys_memfd_create) /* 350 */ From 2c67568903d6ae1b8cfa343c649029180239418e Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 8 Aug 2014 13:02:36 +0200 Subject: [PATCH 007/272] spi: Add missing kerneldoc bits These are all arguments or fields that got added without updating the kerneldoc comments. Signed-off-by: Thierry Reding Signed-off-by: Mark Brown --- drivers/spi/spi.c | 1 + include/linux/spi/spi.h | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e6f076d5ffd5..f52f3e647ef8 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -843,6 +843,7 @@ out: /** * spi_finalize_current_transfer - report completion of a transfer + * @master: the master reporting completion * * Called by SPI drivers using the core transfer_one_message() * implementation to notify it that the current interrupt driven diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index e713543336f1..46d188a9947c 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -253,6 +253,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * the device whose settings are being modified. * @transfer: adds a message to the controller's transfer queue. * @cleanup: frees controller-specific state + * @can_dma: determine whether this master supports DMA * @queued: whether this master is providing an internal message queue * @kworker: thread struct for message pump * @kworker_task: pointer to task for message pump kworker thread @@ -262,6 +263,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @cur_msg: the currently in-flight message * @cur_msg_prepared: spi_prepare_message was called for the currently * in-flight message + * @cur_msg_mapped: message has been mapped for DMA * @xfer_completion: used by core transfer_one_message() * @busy: message pump is busy * @running: message pump is running @@ -299,6 +301,10 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that * are not GPIOs (driven by the SPI controller itself). + * @dma_tx: DMA transmit channel + * @dma_rx: DMA receive channel + * @dummy_rx: dummy receive buffer for full-duplex devices + * @dummy_tx: dummy transmit buffer for full-duplex devices * * Each SPI master controller can communicate with one or more @spi_device * children. These make a small bus, sharing MOSI, MISO and SCK signals @@ -632,6 +638,7 @@ struct spi_transfer { * addresses for each transfer buffer * @complete: called to report transaction completions * @context: the argument to complete() when it's called + * @frame_length: the total number of bytes in the message * @actual_length: the total number of bytes that were transferred in all * successful segments * @status: zero for success, else negative errno From 420ae9518404c4aeda3abc8e017c8fdcc3a13d6b Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 16 Jun 2014 07:25:06 +0400 Subject: [PATCH 008/272] xtensa: simplify addition of new core variants Instead of adding new Kconfig options and Makefile rules for each new core variant provide XTENSA_VARIANT_CUSTOM variant and record variant name in the XTENSA_VARIANT_NAME variable. Adding new core variant now means providing directory structure under arch/xtensa/variant and specifying correct name in kernel configuration. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 36 +++++++++++++++++++++++++++++++++++- arch/xtensa/Makefile | 7 ++----- 2 files changed, 37 insertions(+), 6 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3a617af60d46..7feca8dfdff2 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -62,7 +62,9 @@ config TRACE_IRQFLAGS_SUPPORT def_bool y config MMU - def_bool n + bool + default n if !XTENSA_VARIANT_CUSTOM + default XTENSA_VARIANT_MMU if XTENSA_VARIANT_CUSTOM config VARIANT_IRQ_SWITCH def_bool n @@ -102,8 +104,40 @@ config XTENSA_VARIANT_S6000 select VARIANT_IRQ_SWITCH select ARCH_REQUIRE_GPIOLIB select XTENSA_CALIBRATE_CCOUNT + +config XTENSA_VARIANT_CUSTOM + bool "Custom Xtensa processor configuration" + select MAY_HAVE_SMP + select HAVE_XTENSA_GPIO32 + help + Select this variant to use a custom Xtensa processor configuration. + You will be prompted for a processor variant CORENAME. endchoice +config XTENSA_VARIANT_CUSTOM_NAME + string "Xtensa Processor Custom Core Variant Name" + depends on XTENSA_VARIANT_CUSTOM + help + Provide the name of a custom Xtensa processor variant. + This CORENAME selects arch/xtensa/variant/CORENAME. + Dont forget you have to select MMU if you have one. + +config XTENSA_VARIANT_NAME + string + default "dc232b" if XTENSA_VARIANT_DC232B + default "dc233c" if XTENSA_VARIANT_DC233C + default "fsf" if XTENSA_VARIANT_FSF + default "s6000" if XTENSA_VARIANT_S6000 + default XTENSA_VARIANT_CUSTOM_NAME if XTENSA_VARIANT_CUSTOM + +config XTENSA_VARIANT_MMU + bool "Core variant has a Full MMU (TLB, Pages, Protection, etc)" + depends on XTENSA_VARIANT_CUSTOM + default y + help + Build a Conventional Kernel with full MMU support, + ie: it supports a TLB with auto-loading, page protection. + config XTENSA_UNALIGNED_USER bool "Unaligned memory access in use space" help diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile index 81250ece3062..472533064b46 100644 --- a/arch/xtensa/Makefile +++ b/arch/xtensa/Makefile @@ -4,6 +4,7 @@ # for more details. # # Copyright (C) 2001 - 2005 Tensilica Inc. +# Copyright (C) 2014 Cadence Design Systems Inc. # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions @@ -13,11 +14,7 @@ # Core configuration. # (Use VAR= to use another default compiler.) -variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf -variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b -variant-$(CONFIG_XTENSA_VARIANT_DC233C) := dc233c -variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000 -variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom +variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME)) VARIANT = $(variant-y) export VARIANT From 8a9de05954846fe854cdea47c0178bb67fc70a47 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 16 Jun 2014 08:15:43 +0400 Subject: [PATCH 009/272] xtensa: make MMU-related configuration options depend on MMU MMUv3 and HIGHMEM support are available only on configurations with MMU, don't show them otherwise. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 7feca8dfdff2..480a7d5fb105 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -197,6 +197,7 @@ config MATH_EMULATION config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX bool "Initialize Xtensa MMU inside the Linux kernel code" + depends on MMU default y help Earlier version initialized the MMU in the exception vector @@ -226,6 +227,7 @@ config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX config HIGHMEM bool "High Memory Support" + depends on MMU help Linux can use the full amount of RAM in the system by default. However, the default MMUv2 setup only maps the From 920f8a396595281037b48dff8bad6003ba6c7733 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 16 Jun 2014 08:20:17 +0400 Subject: [PATCH 010/272] xtensa: sort 'select' statements in Kconfig Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 480a7d5fb105..3b486dd5d6d4 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -4,24 +4,24 @@ config ZONE_DMA config XTENSA def_bool y select ARCH_WANT_FRAME_POINTERS - select HAVE_IDE - select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS - select VIRT_TO_BUS - select GENERIC_IRQ_SHOW - select GENERIC_SCHED_CLOCK - select MODULES_USE_ELF_RELA - select GENERIC_PCI_IOMAP select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_OPTIONAL_GPIOLIB select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS - select IRQ_DOMAIN - select HAVE_OPROFILE - select HAVE_FUNCTION_TRACER - select HAVE_IRQ_TIME_ACCOUNTING - select HAVE_PERF_EVENTS select COMMON_CLK + select GENERIC_ATOMIC64 + select GENERIC_CLOCKEVENTS + select GENERIC_IRQ_SHOW + select GENERIC_PCI_IOMAP + select GENERIC_SCHED_CLOCK + select HAVE_FUNCTION_TRACER + select HAVE_IDE + select HAVE_IRQ_TIME_ACCOUNTING + select HAVE_OPROFILE + select HAVE_PERF_EVENTS + select IRQ_DOMAIN + select MODULES_USE_ELF_RELA + select VIRT_TO_BUS help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both From 4964527da82d6faacc753e8a322b1b8ef8340bd1 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 16 Jun 2014 08:25:43 +0400 Subject: [PATCH 011/272] xtensa: select HAVE_IDE only on platforms that may have it HAVE_IDE is not a property of architecture but of a platform, and neither ISS or XTFPGA support it. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 3 ++- arch/xtensa/configs/iss_defconfig | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3b486dd5d6d4..eaa9d07907d7 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -15,7 +15,6 @@ config XTENSA select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK select HAVE_FUNCTION_TRACER - select HAVE_IDE select HAVE_IRQ_TIME_ACCOUNTING select HAVE_OPROFILE select HAVE_PERF_EVENTS @@ -286,12 +285,14 @@ config XTENSA_PLATFORM_ISS config XTENSA_PLATFORM_XT2000 bool "XT2000" + select HAVE_IDE help XT2000 is the name of Tensilica's feature-rich emulation platform. This hardware is capable of running a full Linux distribution. config XTENSA_PLATFORM_S6105 bool "S6105" + select HAVE_IDE select SERIAL_CONSOLE select NO_IOPORT_MAP diff --git a/arch/xtensa/configs/iss_defconfig b/arch/xtensa/configs/iss_defconfig index 1493c68352d1..009fe4a266dc 100644 --- a/arch/xtensa/configs/iss_defconfig +++ b/arch/xtensa/configs/iss_defconfig @@ -308,7 +308,7 @@ CONFIG_MISC_DEVICES=y # EEPROM support # # CONFIG_EEPROM_93CX6 is not set -CONFIG_HAVE_IDE=y +# CONFIG_HAVE_IDE is not set # CONFIG_IDE is not set # From ad4a96b418aceed3f86882e7619bdccaf04c9ce0 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 17 Jun 2014 01:32:52 +0400 Subject: [PATCH 012/272] xtensa: remove orphan MATH_EMULATION symbol Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 5 ----- arch/xtensa/configs/common_defconfig | 1 - arch/xtensa/configs/iss_defconfig | 1 - arch/xtensa/configs/s6105_defconfig | 1 - 4 files changed, 8 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index eaa9d07907d7..3d83c29c9232 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -189,11 +189,6 @@ config HOTPLUG_CPU Say N if you want to disable CPU hotplug. -config MATH_EMULATION - bool "Math emulation" - help - Can we use information of configuration file? - config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX bool "Initialize Xtensa MMU inside the Linux kernel code" depends on MMU diff --git a/arch/xtensa/configs/common_defconfig b/arch/xtensa/configs/common_defconfig index f6000fe05119..721df1214bc3 100644 --- a/arch/xtensa/configs/common_defconfig +++ b/arch/xtensa/configs/common_defconfig @@ -66,7 +66,6 @@ CONFIG_XTENSA_ARCH_LINUX_BE=y CONFIG_MMU=y # CONFIG_XTENSA_UNALIGNED_USER is not set # CONFIG_PREEMPT is not set -# CONFIG_MATH_EMULATION is not set # CONFIG_HIGHMEM is not set # diff --git a/arch/xtensa/configs/iss_defconfig b/arch/xtensa/configs/iss_defconfig index 009fe4a266dc..b966baf82cae 100644 --- a/arch/xtensa/configs/iss_defconfig +++ b/arch/xtensa/configs/iss_defconfig @@ -146,7 +146,6 @@ CONFIG_XTENSA_VARIANT_FSF=y # CONFIG_XTENSA_VARIANT_S6000 is not set # CONFIG_XTENSA_UNALIGNED_USER is not set # CONFIG_PREEMPT is not set -# CONFIG_MATH_EMULATION is not set CONFIG_XTENSA_CALIBRATE_CCOUNT=y CONFIG_SERIAL_CONSOLE=y CONFIG_XTENSA_ISS_NETWORK=y diff --git a/arch/xtensa/configs/s6105_defconfig b/arch/xtensa/configs/s6105_defconfig index 12a492ab6d17..9471265b8ca6 100644 --- a/arch/xtensa/configs/s6105_defconfig +++ b/arch/xtensa/configs/s6105_defconfig @@ -109,7 +109,6 @@ CONFIG_VARIANT_IRQ_SWITCH=y CONFIG_XTENSA_VARIANT_S6000=y # CONFIG_XTENSA_UNALIGNED_USER is not set CONFIG_PREEMPT=y -# CONFIG_MATH_EMULATION is not set # CONFIG_HIGHMEM is not set CONFIG_XTENSA_CALIBRATE_CCOUNT=y CONFIG_SERIAL_CONSOLE=y From f61bf8e7d19e0a3456a7a9ed97c399e4353698dc Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 20 Jul 2014 03:38:53 +0400 Subject: [PATCH 013/272] xtensa: replace IOCTL code definitions with constants This fixes userspace code that builds on other architectures but fails on xtensa due to references to structures that other architectures don't refer to. E.g. this fixes the following issue with python-2.7.8: python-2.7.8/Modules/termios.c:861:25: error: invalid application of 'sizeof' to incomplete type 'struct serial_multiport_struct' {"TIOCSERGETMULTI", TIOCSERGETMULTI}, python-2.7.8/Modules/termios.c:870:25: error: invalid application of 'sizeof' to incomplete type 'struct serial_multiport_struct' {"TIOCSERSETMULTI", TIOCSERSETMULTI}, python-2.7.8/Modules/termios.c:900:24: error: invalid application of 'sizeof' to incomplete type 'struct tty_struct' {"TIOCTTYGSTRUCT", TIOCTTYGSTRUCT}, Cc: stable@vger.kernel.org Signed-off-by: Max Filippov --- arch/xtensa/include/uapi/asm/ioctls.h | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/arch/xtensa/include/uapi/asm/ioctls.h b/arch/xtensa/include/uapi/asm/ioctls.h index b4cb1100c0fb..a47909f0c34b 100644 --- a/arch/xtensa/include/uapi/asm/ioctls.h +++ b/arch/xtensa/include/uapi/asm/ioctls.h @@ -28,17 +28,17 @@ #define TCSETSW 0x5403 #define TCSETSF 0x5404 -#define TCGETA _IOR('t', 23, struct termio) -#define TCSETA _IOW('t', 24, struct termio) -#define TCSETAW _IOW('t', 25, struct termio) -#define TCSETAF _IOW('t', 28, struct termio) +#define TCGETA 0x80127417 /* _IOR('t', 23, struct termio) */ +#define TCSETA 0x40127418 /* _IOW('t', 24, struct termio) */ +#define TCSETAW 0x40127419 /* _IOW('t', 25, struct termio) */ +#define TCSETAF 0x4012741C /* _IOW('t', 28, struct termio) */ #define TCSBRK _IO('t', 29) #define TCXONC _IO('t', 30) #define TCFLSH _IO('t', 31) -#define TIOCSWINSZ _IOW('t', 103, struct winsize) -#define TIOCGWINSZ _IOR('t', 104, struct winsize) +#define TIOCSWINSZ 0x40087467 /* _IOW('t', 103, struct winsize) */ +#define TIOCGWINSZ 0x80087468 /* _IOR('t', 104, struct winsize) */ #define TIOCSTART _IO('t', 110) /* start output, like ^Q */ #define TIOCSTOP _IO('t', 111) /* stop output, like ^S */ #define TIOCOUTQ _IOR('t', 115, int) /* output queue size */ @@ -88,7 +88,6 @@ #define TIOCSETD _IOW('T', 35, int) #define TIOCGETD _IOR('T', 36, int) #define TCSBRKP _IOW('T', 37, int) /* Needed for POSIX tcsendbreak()*/ -#define TIOCTTYGSTRUCT _IOR('T', 38, struct tty_struct) /* For debugging only*/ #define TIOCSBRK _IO('T', 39) /* BSD compatibility */ #define TIOCCBRK _IO('T', 40) /* BSD compatibility */ #define TIOCGSID _IOR('T', 41, pid_t) /* Return the session ID of FD*/ @@ -114,8 +113,10 @@ #define TIOCSERGETLSR _IOR('T', 89, unsigned int) /* Get line status reg. */ /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */ # define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ -#define TIOCSERGETMULTI _IOR('T', 90, struct serial_multiport_struct) /* Get multiport config */ -#define TIOCSERSETMULTI _IOW('T', 91, struct serial_multiport_struct) /* Set multiport config */ +#define TIOCSERGETMULTI 0x80a8545a /* Get multiport config */ + /* _IOR('T', 90, struct serial_multiport_struct) */ +#define TIOCSERSETMULTI 0x40a8545b /* Set multiport config */ + /* _IOW('T', 91, struct serial_multiport_struct) */ #define TIOCMIWAIT _IO('T', 92) /* wait for a change on serial input line(s) */ #define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ From 1ca49463c44c970b1ab1d71b0f268bfdf8427a7e Mon Sep 17 00:00:00 2001 From: Alan Douglas Date: Wed, 23 Jul 2014 14:06:40 +0400 Subject: [PATCH 014/272] xtensa: fix address checks in dma_{alloc,free}_coherent Virtual address is translated to the XCHAL_KSEG_CACHED region in the dma_free_coherent, but is checked to be in the 0...XCHAL_KSEG_SIZE range. Change check for end of the range from 'addr >= X' to 'addr > X - 1' to handle the case of X == 0. Replace 'if (C) BUG();' construct with 'BUG_ON(C);'. Cc: stable@vger.kernel.org Signed-off-by: Alan Douglas Signed-off-by: Max Filippov --- arch/xtensa/kernel/pci-dma.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c index 2d9cc6dbfd78..e8b76b8e4b29 100644 --- a/arch/xtensa/kernel/pci-dma.c +++ b/arch/xtensa/kernel/pci-dma.c @@ -49,9 +49,8 @@ dma_alloc_coherent(struct device *dev,size_t size,dma_addr_t *handle,gfp_t flag) /* We currently don't support coherent memory outside KSEG */ - if (ret < XCHAL_KSEG_CACHED_VADDR - || ret >= XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_SIZE) - BUG(); + BUG_ON(ret < XCHAL_KSEG_CACHED_VADDR || + ret > XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_SIZE - 1); if (ret != 0) { @@ -68,10 +67,11 @@ EXPORT_SYMBOL(dma_alloc_coherent); void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) { - long addr=(long)vaddr+XCHAL_KSEG_CACHED_VADDR-XCHAL_KSEG_BYPASS_VADDR; + unsigned long addr = (unsigned long)vaddr + + XCHAL_KSEG_CACHED_VADDR - XCHAL_KSEG_BYPASS_VADDR; - if (addr < 0 || addr >= XCHAL_KSEG_SIZE) - BUG(); + BUG_ON(addr < XCHAL_KSEG_CACHED_VADDR || + addr > XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_SIZE - 1); free_pages(addr, get_order(size)); } From 89f77c6f5bb4b0058f40f510809ec07255e02a7e Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 11 Apr 2014 12:25:50 +0200 Subject: [PATCH 015/272] xtensa: add renameat2 syscall Signed-off-by: Miklos Szeredi Cc: Chris Zankel Signed-off-by: Max Filippov --- arch/xtensa/include/uapi/asm/unistd.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h index b9395529f02d..8883fc877c5c 100644 --- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -739,7 +739,10 @@ __SYSCALL(334, sys_sched_setattr, 2) #define __NR_sched_getattr 335 __SYSCALL(335, sys_sched_getattr, 3) -#define __NR_syscall_count 336 +#define __NR_renameat2 336 +__SYSCALL(336, sys_renameat2, 5) + +#define __NR_syscall_count 337 /* * sysxtensa syscall handler From 52247123749cc3cbc30168b33ad8c69515c96d23 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 27 Jul 2014 07:23:41 +0400 Subject: [PATCH 016/272] xtensa: fix access to THREAD_RA/THREAD_SP/THREAD_DS With SMP and a lot of debug options enabled task_struct::thread gets out of reach of s32i/l32i instructions with base pointing at task_struct, breaking build with the following messages: arch/xtensa/kernel/entry.S: Assembler messages: arch/xtensa/kernel/entry.S:1002: Error: operand 3 of 'l32i.n' has invalid value '1048' arch/xtensa/kernel/entry.S:1831: Error: operand 3 of 's32i.n' has invalid value '1040' arch/xtensa/kernel/entry.S:1832: Error: operand 3 of 's32i.n' has invalid value '1044' Change base to point to task_struct::thread in such cases. Don't use a10 in _switch_to to save/restore prev pointer as a2 is not clobbered. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov --- arch/xtensa/include/asm/uaccess.h | 5 +++++ arch/xtensa/kernel/entry.S | 12 ++++++++---- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h index fd686dc45d1a..c7211e7e182d 100644 --- a/arch/xtensa/include/asm/uaccess.h +++ b/arch/xtensa/include/asm/uaccess.h @@ -52,7 +52,12 @@ */ .macro get_fs ad, sp GET_CURRENT(\ad,\sp) +#if THREAD_CURRENT_DS > 1020 + addi \ad, \ad, TASK_THREAD + l32i \ad, \ad, THREAD_CURRENT_DS - TASK_THREAD +#else l32i \ad, \ad, THREAD_CURRENT_DS +#endif .endm /* diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index ef7f4990722b..db96acb1362b 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1820,7 +1820,6 @@ ENTRY(_switch_to) entry a1, 16 - mov a10, a2 # preserve 'prev' (a2) mov a11, a3 # and 'next' (a3) l32i a4, a2, TASK_THREAD_INFO @@ -1828,8 +1827,14 @@ ENTRY(_switch_to) save_xtregs_user a4 a6 a8 a9 a12 a13 THREAD_XTREGS_USER - s32i a0, a10, THREAD_RA # save return address - s32i a1, a10, THREAD_SP # save stack pointer +#if THREAD_RA > 1020 || THREAD_SP > 1020 + addi a10, a2, TASK_THREAD + s32i a0, a10, THREAD_RA - TASK_THREAD # save return address + s32i a1, a10, THREAD_SP - TASK_THREAD # save stack pointer +#else + s32i a0, a2, THREAD_RA # save return address + s32i a1, a2, THREAD_SP # save stack pointer +#endif /* Disable ints while we manipulate the stack pointer. */ @@ -1870,7 +1875,6 @@ ENTRY(_switch_to) load_xtregs_user a5 a6 a8 a9 a12 a13 THREAD_XTREGS_USER wsr a14, ps - mov a2, a10 # return 'prev' rsync retw From 22def7681186f65f4f1256ae9b0b6db2a7720cb1 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 15 Jul 2014 02:27:50 +0400 Subject: [PATCH 017/272] xtensa: make fixmap region addressing grow with index It's much easier to reason about alignment and coloring of regions located in the fixmap when fixmap index is just a PFN within the fixmap region. Change fixmap addressing so that index 0 corresponds to FIXADDR_START instead of the FIXADDR_TOP. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/fixmap.h | 27 ++++++++++++++++++++++++--- arch/xtensa/mm/highmem.c | 6 +++--- 2 files changed, 27 insertions(+), 6 deletions(-) diff --git a/arch/xtensa/include/asm/fixmap.h b/arch/xtensa/include/asm/fixmap.h index 9f6c33d0428a..a43cd5265556 100644 --- a/arch/xtensa/include/asm/fixmap.h +++ b/arch/xtensa/include/asm/fixmap.h @@ -23,8 +23,8 @@ * Here we define all the compile-time 'special' virtual * addresses. The point is to have a constant address at * compile time, but to set the physical address only - * in the boot process. We allocate these special addresses - * from the end of the consistent memory region backwards. + * in the boot process. We allocate these special addresses + * from the start of the consistent memory region upwards. * Also this lets us do fail-safe vmalloc(), we * can guarantee that these special addresses and * vmalloc()-ed addresses never overlap. @@ -47,7 +47,28 @@ enum fixed_addresses { #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) -#include +#define __fix_to_virt(x) (FIXADDR_START + ((x) << PAGE_SHIFT)) +#define __virt_to_fix(x) (((x) - FIXADDR_START) >> PAGE_SHIFT) + +#ifndef __ASSEMBLY__ +/* + * 'index to address' translation. If anyone tries to use the idx + * directly without translation, we catch the bug with a NULL-deference + * kernel oops. Illegal ranges of incoming indices are caught too. + */ +static __always_inline unsigned long fix_to_virt(const unsigned int idx) +{ + BUILD_BUG_ON(idx >= __end_of_fixed_addresses); + return __fix_to_virt(idx); +} + +static inline unsigned long virt_to_fix(const unsigned long vaddr) +{ + BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); + return __virt_to_fix(vaddr); +} + +#endif #define kmap_get_fixmap_pte(vaddr) \ pte_offset_kernel( \ diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c index 17a8c0d6fd17..2e95a7665bf3 100644 --- a/arch/xtensa/mm/highmem.c +++ b/arch/xtensa/mm/highmem.c @@ -28,9 +28,9 @@ void *kmap_atomic(struct page *page) idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); #ifdef CONFIG_DEBUG_HIGHMEM - BUG_ON(!pte_none(*(kmap_pte - idx))); + BUG_ON(!pte_none(*(kmap_pte + idx))); #endif - set_pte(kmap_pte - idx, mk_pte(page, PAGE_KERNEL_EXEC)); + set_pte(kmap_pte + idx, mk_pte(page, PAGE_KERNEL_EXEC)); return (void *)vaddr; } @@ -51,7 +51,7 @@ void __kunmap_atomic(void *kvaddr) * is a bad idea also, in case the page changes cacheability * attributes or becomes a protected page in a hypervisor. */ - pte_clear(&init_mm, kvaddr, kmap_pte - idx); + pte_clear(&init_mm, kvaddr, kmap_pte + idx); local_flush_tlb_kernel_range((unsigned long)kvaddr, (unsigned long)kvaddr + PAGE_SIZE); From dec7305d9f752f6ad2ec30ec8a723182437c5aa5 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 15 Jul 2014 02:49:15 +0400 Subject: [PATCH 018/272] xtensa: allow fixmap and kmap span more than one page table To support aliasing cache both kmap region sizes are multiplied by the number of data cache colors. After that expansion page tables that cover kmap regions may become larger than one page. Correctly allocate and initialize page tables in this case. Signed-off-by: Max Filippov --- arch/xtensa/mm/mmu.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c index 3429b483d9f8..abe4513eb0dd 100644 --- a/arch/xtensa/mm/mmu.c +++ b/arch/xtensa/mm/mmu.c @@ -18,32 +18,38 @@ #include #if defined(CONFIG_HIGHMEM) -static void * __init init_pmd(unsigned long vaddr) +static void * __init init_pmd(unsigned long vaddr, unsigned long n_pages) { pgd_t *pgd = pgd_offset_k(vaddr); pmd_t *pmd = pmd_offset(pgd, vaddr); + pte_t *pte; + unsigned long i; - if (pmd_none(*pmd)) { - unsigned i; - pte_t *pte = alloc_bootmem_low_pages(PAGE_SIZE); + n_pages = ALIGN(n_pages, PTRS_PER_PTE); - for (i = 0; i < 1024; i++) - pte_clear(NULL, 0, pte + i); + pr_debug("%s: vaddr: 0x%08lx, n_pages: %ld\n", + __func__, vaddr, n_pages); - set_pmd(pmd, __pmd(((unsigned long)pte) & PAGE_MASK)); - BUG_ON(pte != pte_offset_kernel(pmd, 0)); - pr_debug("%s: vaddr: 0x%08lx, pmd: 0x%p, pte: 0x%p\n", - __func__, vaddr, pmd, pte); - return pte; - } else { - return pte_offset_kernel(pmd, 0); + pte = alloc_bootmem_low_pages(n_pages * sizeof(pte_t)); + + for (i = 0; i < n_pages; ++i) + pte_clear(NULL, 0, pte + i); + + for (i = 0; i < n_pages; i += PTRS_PER_PTE, ++pmd) { + pte_t *cur_pte = pte + i; + + BUG_ON(!pmd_none(*pmd)); + set_pmd(pmd, __pmd(((unsigned long)cur_pte) & PAGE_MASK)); + BUG_ON(cur_pte != pte_offset_kernel(pmd, 0)); + pr_debug("%s: pmd: 0x%p, pte: 0x%p\n", + __func__, pmd, cur_pte); } + return pte; } static void __init fixedrange_init(void) { - BUILD_BUG_ON(FIXADDR_SIZE > PMD_SIZE); - init_pmd(__fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK); + init_pmd(__fix_to_virt(0), __end_of_fixed_addresses); } #endif @@ -52,7 +58,7 @@ void __init paging_init(void) memset(swapper_pg_dir, 0, PAGE_SIZE); #ifdef CONFIG_HIGHMEM fixedrange_init(); - pkmap_page_table = init_pmd(PKMAP_BASE); + pkmap_page_table = init_pmd(PKMAP_BASE, LAST_PKMAP); kmap_init(); #endif } From 7128039fe2dd3d59da9e4ffa036f3aaa3ba87b9f Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 21 Jul 2014 22:01:51 +0400 Subject: [PATCH 019/272] xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss Current definition of TLBTEMP_BASE_2 is always 32K above the TLBTEMP_BASE_1, whereas fast_second_level_miss handler for the TLBTEMP region analyzes virtual address bit (PAGE_SHIFT + DCACHE_ALIAS_ORDER) to determine TLBTEMP region where the fault happened. The size of the TLBTEMP region is also checked incorrectly: not 64K, but twice data cache way size (whicht may as well be less than the instruction cache way size). Fix TLBTEMP_BASE_2 to be TLBTEMP_BASE_1 + data cache way size. Provide TLBTEMP_SIZE that is a greater of doubled data cache way size or the instruction cache way size, and use it to determine if the second level TLB miss occured in the TLBTEMP region. Practical occurence of page faults in the TLBTEMP area is extremely rare, this code can be tested by deletion of all w[di]tlb instructions in the tlbtemp_mapping region. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov --- arch/xtensa/include/asm/pgtable.h | 7 ++++++- arch/xtensa/kernel/entry.S | 2 +- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 4b0ca35a93b1..b2173e5da601 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -67,7 +67,12 @@ #define VMALLOC_START 0xC0000000 #define VMALLOC_END 0xC7FEFFFF #define TLBTEMP_BASE_1 0xC7FF0000 -#define TLBTEMP_BASE_2 0xC7FF8000 +#define TLBTEMP_BASE_2 (TLBTEMP_BASE_1 + DCACHE_WAY_SIZE) +#if 2 * DCACHE_WAY_SIZE > ICACHE_WAY_SIZE +#define TLBTEMP_SIZE (2 * DCACHE_WAY_SIZE) +#else +#define TLBTEMP_SIZE ICACHE_WAY_SIZE +#endif /* * For the Xtensa architecture, the PTE layout is as follows: diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index db96acb1362b..21917e5fd53a 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1565,7 +1565,7 @@ ENTRY(fast_second_level_miss) rsr a0, excvaddr bltu a0, a3, 2f - addi a1, a0, -(2 << (DCACHE_ALIAS_ORDER + PAGE_SHIFT)) + addi a1, a0, -TLBTEMP_SIZE bgeu a1, a3, 2f /* Check if we have to restore an ITLB mapping. */ From a91902db2990909ea5e6b110811b448f2e8f1571 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 21 Jul 2014 18:54:11 +0400 Subject: [PATCH 020/272] xtensa: implement clear_user_highpage and copy_user_highpage Existing clear_user_page and copy_user_page cannot be used with highmem because they calculate physical page address from its virtual address and do it incorrectly in case of high memory page mapped with kmap_atomic. Also kmap is not needed, as most likely userspace mapping color would be different from the kmapped color. Provide clear_user_highpage and copy_user_highpage functions that determine if temporary mapping is needed for the pages. Move most of the logic of the former clear_user_page and copy_user_page to xtensa/mm/cache.c only leaving temporary mapping setup, invalidation and clearing/copying in the xtensa/mm/misc.S. Rename these functions to clear_page_alias and copy_page_alias. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/cacheflush.h | 2 + arch/xtensa/include/asm/page.h | 12 ++- arch/xtensa/mm/cache.c | 63 +++++++++++++++ arch/xtensa/mm/misc.S | 116 ++++++++++++--------------- 4 files changed, 127 insertions(+), 66 deletions(-) diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h index 555a98a18453..e72aaca7a77f 100644 --- a/arch/xtensa/include/asm/cacheflush.h +++ b/arch/xtensa/include/asm/cacheflush.h @@ -37,6 +37,7 @@ * specials for cache aliasing: * * __flush_invalidate_dcache_page_alias(vaddr,paddr) + * __invalidate_dcache_page_alias(vaddr,paddr) * __invalidate_icache_page_alias(vaddr,paddr) */ @@ -62,6 +63,7 @@ extern void __flush_invalidate_dcache_range(unsigned long, unsigned long); #if defined(CONFIG_MMU) && (DCACHE_WAY_SIZE > PAGE_SIZE) extern void __flush_invalidate_dcache_page_alias(unsigned long, unsigned long); +extern void __invalidate_dcache_page_alias(unsigned long, unsigned long); #else static inline void __flush_invalidate_dcache_page_alias(unsigned long virt, unsigned long phys) { } diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index 47f582333f6b..11721ccd7f23 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h @@ -134,6 +134,7 @@ static inline __attribute_const__ int get_order(unsigned long size) #endif struct page; +struct vm_area_struct; extern void clear_page(void *page); extern void copy_page(void *to, void *from); @@ -143,8 +144,15 @@ extern void copy_page(void *to, void *from); */ #if DCACHE_WAY_SIZE > PAGE_SIZE -extern void clear_user_page(void*, unsigned long, struct page*); -extern void copy_user_page(void*, void*, unsigned long, struct page*); +extern void clear_page_alias(void *vaddr, unsigned long paddr); +extern void copy_page_alias(void *to, void *from, + unsigned long to_paddr, unsigned long from_paddr); + +#define clear_user_highpage clear_user_highpage +void clear_user_highpage(struct page *page, unsigned long vaddr); +#define __HAVE_ARCH_COPY_USER_HIGHPAGE +void copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr, struct vm_area_struct *vma); #else # define clear_user_page(page, vaddr, pg) clear_page(page) # define copy_user_page(to, from, vaddr, pg) copy_page(to, from) diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c index 63cbb867dadd..96aea6624318 100644 --- a/arch/xtensa/mm/cache.c +++ b/arch/xtensa/mm/cache.c @@ -63,6 +63,69 @@ #error "HIGHMEM is not supported on cores with aliasing cache." #endif +#if (DCACHE_WAY_SIZE > PAGE_SIZE) +static inline void kmap_invalidate_coherent(struct page *page, + unsigned long vaddr) +{ + if (!DCACHE_ALIAS_EQ(page_to_phys(page), vaddr)) { + unsigned long kvaddr; + + if (!PageHighMem(page)) { + kvaddr = (unsigned long)page_to_virt(page); + + __invalidate_dcache_page(kvaddr); + } else { + kvaddr = TLBTEMP_BASE_1 + + (page_to_phys(page) & DCACHE_ALIAS_MASK); + + __invalidate_dcache_page_alias(kvaddr, + page_to_phys(page)); + } + } +} + +static inline void *coherent_kvaddr(struct page *page, unsigned long base, + unsigned long vaddr, unsigned long *paddr) +{ + if (PageHighMem(page) || !DCACHE_ALIAS_EQ(page_to_phys(page), vaddr)) { + *paddr = page_to_phys(page); + return (void *)(base + (vaddr & DCACHE_ALIAS_MASK)); + } else { + *paddr = 0; + return page_to_virt(page); + } +} + +void clear_user_highpage(struct page *page, unsigned long vaddr) +{ + unsigned long paddr; + void *kvaddr = coherent_kvaddr(page, TLBTEMP_BASE_1, vaddr, &paddr); + + pagefault_disable(); + kmap_invalidate_coherent(page, vaddr); + set_bit(PG_arch_1, &page->flags); + clear_page_alias(kvaddr, paddr); + pagefault_enable(); +} + +void copy_user_highpage(struct page *dst, struct page *src, + unsigned long vaddr, struct vm_area_struct *vma) +{ + unsigned long dst_paddr, src_paddr; + void *dst_vaddr = coherent_kvaddr(dst, TLBTEMP_BASE_1, vaddr, + &dst_paddr); + void *src_vaddr = coherent_kvaddr(src, TLBTEMP_BASE_2, vaddr, + &src_paddr); + + pagefault_disable(); + kmap_invalidate_coherent(dst, vaddr); + set_bit(PG_arch_1, &dst->flags); + copy_page_alias(dst_vaddr, src_vaddr, dst_paddr, src_paddr); + pagefault_enable(); +} + +#endif /* DCACHE_WAY_SIZE > PAGE_SIZE */ + #if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK /* diff --git a/arch/xtensa/mm/misc.S b/arch/xtensa/mm/misc.S index 1f68558dbcc2..11a01c3e9cea 100644 --- a/arch/xtensa/mm/misc.S +++ b/arch/xtensa/mm/misc.S @@ -110,41 +110,24 @@ ENTRY(__tlbtemp_mapping_start) #if (DCACHE_WAY_SIZE > PAGE_SIZE) /* - * clear_user_page (void *addr, unsigned long vaddr, struct page *page) - * a2 a3 a4 + * clear_page_alias(void *addr, unsigned long paddr) + * a2 a3 */ -ENTRY(clear_user_page) +ENTRY(clear_page_alias) entry a1, 32 - /* Mark page dirty and determine alias. */ + /* Skip setting up a temporary DTLB if not aliased low page. */ - movi a7, (1 << PG_ARCH_1) - l32i a5, a4, PAGE_FLAGS - xor a6, a2, a3 - extui a3, a3, PAGE_SHIFT, DCACHE_ALIAS_ORDER - extui a6, a6, PAGE_SHIFT, DCACHE_ALIAS_ORDER - or a5, a5, a7 - slli a3, a3, PAGE_SHIFT - s32i a5, a4, PAGE_FLAGS + movi a5, PAGE_OFFSET + movi a6, 0 + beqz a3, 1f - /* Skip setting up a temporary DTLB if not aliased. */ - - beqz a6, 1f - - /* Invalidate kernel page. */ - - mov a10, a2 - call8 __invalidate_dcache_page - - /* Setup a temporary DTLB with the color of the VPN */ - - movi a4, ((PAGE_KERNEL | _PAGE_HW_WRITE) - PAGE_OFFSET) & 0xffffffff - movi a5, TLBTEMP_BASE_1 # virt - add a6, a2, a4 # ppn - add a2, a5, a3 # add 'color' + /* Setup a temporary DTLB for the addr. */ + addi a6, a3, (PAGE_KERNEL | _PAGE_HW_WRITE) + mov a4, a2 wdtlb a6, a2 dsync @@ -165,62 +148,43 @@ ENTRY(clear_user_page) /* We need to invalidate the temporary idtlb entry, if any. */ -1: addi a2, a2, -PAGE_SIZE - idtlb a2 +1: idtlb a4 dsync retw -ENDPROC(clear_user_page) +ENDPROC(clear_page_alias) /* - * copy_page_user (void *to, void *from, unsigned long vaddr, struct page *page) - * a2 a3 a4 a5 + * copy_page_alias(void *to, void *from, + * a2 a3 + * unsigned long to_paddr, unsigned long from_paddr) + * a4 a5 */ -ENTRY(copy_user_page) +ENTRY(copy_page_alias) entry a1, 32 - /* Mark page dirty and determine alias for destination. */ + /* Skip setting up a temporary DTLB for destination if not aliased. */ - movi a8, (1 << PG_ARCH_1) - l32i a9, a5, PAGE_FLAGS - xor a6, a2, a4 - xor a7, a3, a4 - extui a4, a4, PAGE_SHIFT, DCACHE_ALIAS_ORDER - extui a6, a6, PAGE_SHIFT, DCACHE_ALIAS_ORDER - extui a7, a7, PAGE_SHIFT, DCACHE_ALIAS_ORDER - or a9, a9, a8 - slli a4, a4, PAGE_SHIFT - s32i a9, a5, PAGE_FLAGS - movi a5, ((PAGE_KERNEL | _PAGE_HW_WRITE) - PAGE_OFFSET) & 0xffffffff + movi a6, 0 + movi a7, 0 + beqz a4, 1f - beqz a6, 1f - - /* Invalidate dcache */ - - mov a10, a2 - call8 __invalidate_dcache_page - - /* Setup a temporary DTLB with a matching color. */ - - movi a8, TLBTEMP_BASE_1 # base - add a6, a2, a5 # ppn - add a2, a8, a4 # add 'color' + /* Setup a temporary DTLB for destination. */ + addi a6, a4, (PAGE_KERNEL | _PAGE_HW_WRITE) wdtlb a6, a2 dsync - /* Skip setting up a temporary DTLB for destination if not aliased. */ + /* Skip setting up a temporary DTLB for source if not aliased. */ -1: beqz a7, 1f +1: beqz a5, 1f - /* Setup a temporary DTLB with a matching color. */ + /* Setup a temporary DTLB for source. */ - movi a8, TLBTEMP_BASE_2 # base - add a7, a3, a5 # ppn - add a3, a8, a4 + addi a7, a5, PAGE_KERNEL addi a8, a3, 1 # way1 wdtlb a7, a8 @@ -271,7 +235,7 @@ ENTRY(copy_user_page) retw -ENDPROC(copy_user_page) +ENDPROC(copy_page_alias) #endif @@ -300,6 +264,30 @@ ENTRY(__flush_invalidate_dcache_page_alias) retw ENDPROC(__flush_invalidate_dcache_page_alias) + +/* + * void __invalidate_dcache_page_alias (addr, phys) + * a2 a3 + */ + +ENTRY(__invalidate_dcache_page_alias) + + entry sp, 16 + + movi a7, 0 # required for exception handler + addi a6, a3, (PAGE_KERNEL | _PAGE_HW_WRITE) + mov a4, a2 + wdtlb a6, a2 + dsync + + ___invalidate_dcache_page a2 a3 + + idtlb a4 + dsync + + retw + +ENDPROC(__invalidate_dcache_page_alias) #endif ENTRY(__tlbtemp_mapping_itlb) From 32544d9c10c42bac3be8b87d2fc95b0aef008795 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 15 Jul 2014 02:51:49 +0400 Subject: [PATCH 021/272] xtensa: support aliasing cache in k[un]map_atomic Map high memory pages at virtual addresses with color that match color of their physical address. Existing cache alias management mechanisms may be used with such pages. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/fixmap.h | 3 ++- arch/xtensa/include/asm/page.h | 2 ++ arch/xtensa/mm/highmem.c | 17 ++++++++++------- 3 files changed, 14 insertions(+), 8 deletions(-) diff --git a/arch/xtensa/include/asm/fixmap.h b/arch/xtensa/include/asm/fixmap.h index a43cd5265556..62b507deea9d 100644 --- a/arch/xtensa/include/asm/fixmap.h +++ b/arch/xtensa/include/asm/fixmap.h @@ -38,7 +38,8 @@ enum fixed_addresses { #ifdef CONFIG_HIGHMEM /* reserved pte's for temporary kernel mappings */ FIX_KMAP_BEGIN, - FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1, + FIX_KMAP_END = FIX_KMAP_BEGIN + + (KM_TYPE_NR * NR_CPUS * DCACHE_N_COLORS) - 1, #endif __end_of_fixed_addresses }; diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index 11721ccd7f23..abe24c6f8b2f 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h @@ -78,7 +78,9 @@ # define DCACHE_ALIAS_EQ(a,b) ((((a) ^ (b)) & DCACHE_ALIAS_MASK) == 0) #else # define DCACHE_ALIAS_ORDER 0 +# define DCACHE_ALIAS(a) ((void)(a), 0) #endif +#define DCACHE_N_COLORS (1 << DCACHE_ALIAS_ORDER) #if ICACHE_WAY_SIZE > PAGE_SIZE # define ICACHE_ALIAS_ORDER (ICACHE_WAY_SHIFT - PAGE_SHIFT) diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c index 2e95a7665bf3..466abaed5382 100644 --- a/arch/xtensa/mm/highmem.c +++ b/arch/xtensa/mm/highmem.c @@ -14,18 +14,23 @@ static pte_t *kmap_pte; +static inline enum fixed_addresses kmap_idx(int type, unsigned long color) +{ + return (type + KM_TYPE_NR * smp_processor_id()) * DCACHE_N_COLORS + + color; +} + void *kmap_atomic(struct page *page) { enum fixed_addresses idx; unsigned long vaddr; - int type; pagefault_disable(); if (!PageHighMem(page)) return page_address(page); - type = kmap_atomic_idx_push(); - idx = type + KM_TYPE_NR * smp_processor_id(); + idx = kmap_idx(kmap_atomic_idx_push(), + DCACHE_ALIAS(page_to_phys(page))); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte + idx))); @@ -38,12 +43,10 @@ EXPORT_SYMBOL(kmap_atomic); void __kunmap_atomic(void *kvaddr) { - int idx, type; - if (kvaddr >= (void *)FIXADDR_START && kvaddr < (void *)FIXADDR_TOP) { - type = kmap_atomic_idx(); - idx = type + KM_TYPE_NR * smp_processor_id(); + int idx = kmap_idx(kmap_atomic_idx(), + DCACHE_ALIAS((unsigned long)kvaddr)); /* * Force other mappings to Oops if they'll try to access this From 8504b503dfa86f698a38f9ee1fc2876ab012b776 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 17 Jul 2014 05:04:49 +0400 Subject: [PATCH 022/272] xtensa: support aliasing cache in kmap Define ARCH_PKMAP_COLORING and provide corresponding macro definitions on cores with aliasing data cache. Instead of single last_pkmap_nr maintain an array last_pkmap_nr_arr of pkmap counters for each page color. Make sure that kmap maps physical page at virtual address with color matching its physical address. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/highmem.h | 40 +++++++++++++++++++++++++++++-- arch/xtensa/mm/highmem.c | 18 ++++++++++++++ 2 files changed, 56 insertions(+), 2 deletions(-) diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index 2653ef5d55f1..2c7901edffaf 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -12,19 +12,55 @@ #ifndef _XTENSA_HIGHMEM_H #define _XTENSA_HIGHMEM_H +#include #include #include #include #include -#define PKMAP_BASE (FIXADDR_START - PMD_SIZE) -#define LAST_PKMAP PTRS_PER_PTE +#define PKMAP_BASE ((FIXADDR_START - \ + (LAST_PKMAP + 1) * PAGE_SIZE) & PMD_MASK) +#define LAST_PKMAP (PTRS_PER_PTE * DCACHE_N_COLORS) #define LAST_PKMAP_MASK (LAST_PKMAP - 1) #define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) #define kmap_prot PAGE_KERNEL +#if DCACHE_WAY_SIZE > PAGE_SIZE +#define get_pkmap_color get_pkmap_color +static inline int get_pkmap_color(struct page *page) +{ + return DCACHE_ALIAS(page_to_phys(page)); +} + +extern unsigned int last_pkmap_nr_arr[]; + +static inline unsigned int get_next_pkmap_nr(unsigned int color) +{ + last_pkmap_nr_arr[color] = + (last_pkmap_nr_arr[color] + DCACHE_N_COLORS) & LAST_PKMAP_MASK; + return last_pkmap_nr_arr[color] + color; +} + +static inline int no_more_pkmaps(unsigned int pkmap_nr, unsigned int color) +{ + return pkmap_nr < DCACHE_N_COLORS; +} + +static inline int get_pkmap_entries_count(unsigned int color) +{ + return LAST_PKMAP / DCACHE_N_COLORS; +} + +extern wait_queue_head_t pkmap_map_wait_arr[]; + +static inline wait_queue_head_t *get_pkmap_wait_queue_head(unsigned int color) +{ + return pkmap_map_wait_arr + color; +} +#endif + extern pte_t *pkmap_page_table; void *kmap_high(struct page *page); diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c index 466abaed5382..8cfb71ec0937 100644 --- a/arch/xtensa/mm/highmem.c +++ b/arch/xtensa/mm/highmem.c @@ -14,6 +14,23 @@ static pte_t *kmap_pte; +#if DCACHE_WAY_SIZE > PAGE_SIZE +unsigned int last_pkmap_nr_arr[DCACHE_N_COLORS]; +wait_queue_head_t pkmap_map_wait_arr[DCACHE_N_COLORS]; + +static void __init kmap_waitqueues_init(void) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(pkmap_map_wait_arr); ++i) + init_waitqueue_head(pkmap_map_wait_arr + i); +} +#else +static inline void kmap_waitqueues_init(void) +{ +} +#endif + static inline enum fixed_addresses kmap_idx(int type, unsigned long color) { return (type + KM_TYPE_NR * smp_processor_id()) * DCACHE_N_COLORS + @@ -72,4 +89,5 @@ void __init kmap_init(void) /* cache the first kmap pte */ kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); kmap_pte = kmap_get_fixmap_pte(kmap_vstart); + kmap_waitqueues_init(); } From 270eec76de2557c9df01d74bc4c948d0924fc007 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 21 Jul 2014 04:24:40 +0400 Subject: [PATCH 023/272] xtensa: support highmem in aliasing cache flushing code Use __flush_invalidate_dcache_page_alias with alias set to color of the page physical address instead of __flush_invalidate_dcache_page: this works for high memory pages and mapping/unmapping to the TLBTEMP area is virtually free. Allow building configurations with aliasing cache and highmem enabled. Signed-off-by: Max Filippov --- arch/xtensa/mm/cache.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c index 96aea6624318..d75aa1476da7 100644 --- a/arch/xtensa/mm/cache.c +++ b/arch/xtensa/mm/cache.c @@ -59,10 +59,6 @@ * */ -#if (DCACHE_WAY_SIZE > PAGE_SIZE) && defined(CONFIG_HIGHMEM) -#error "HIGHMEM is not supported on cores with aliasing cache." -#endif - #if (DCACHE_WAY_SIZE > PAGE_SIZE) static inline void kmap_invalidate_coherent(struct page *page, unsigned long vaddr) @@ -166,7 +162,8 @@ void flush_dcache_page(struct page *page) if (!alias && !mapping) return; - __flush_invalidate_dcache_page((long)page_address(page)); + virt = TLBTEMP_BASE_1 + (phys & DCACHE_ALIAS_MASK); + __flush_invalidate_dcache_page_alias(virt, phys); virt = TLBTEMP_BASE_1 + (temp & DCACHE_ALIAS_MASK); @@ -231,13 +228,12 @@ update_mmu_cache(struct vm_area_struct * vma, unsigned long addr, pte_t *ptep) #if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK if (!PageReserved(page) && test_bit(PG_arch_1, &page->flags)) { - - unsigned long paddr = (unsigned long) page_address(page); unsigned long phys = page_to_phys(page); - unsigned long tmp = TLBTEMP_BASE_1 + (addr & DCACHE_ALIAS_MASK); - - __flush_invalidate_dcache_page(paddr); + unsigned long tmp; + tmp = TLBTEMP_BASE_1 + (phys & DCACHE_ALIAS_MASK); + __flush_invalidate_dcache_page_alias(tmp, phys); + tmp = TLBTEMP_BASE_1 + (addr & DCACHE_ALIAS_MASK); __flush_invalidate_dcache_page_alias(tmp, phys); __invalidate_icache_page_alias(tmp, phys); From b82837c772c3a1d8778295ab094cf46ecddc8057 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 24 Mar 2014 05:16:02 +0400 Subject: [PATCH 024/272] xtensa: configure kc705 for highmem Enable all memory available on KC705 (1G - 128M) by default. Update memory node in DTS and also limit usable memory in bootargs in case memmap is passed from the bootloader. Signed-off-by: Max Filippov --- arch/xtensa/boot/dts/kc705.dts | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/boot/dts/kc705.dts b/arch/xtensa/boot/dts/kc705.dts index 742a347be67a..c4d17a34ab86 100644 --- a/arch/xtensa/boot/dts/kc705.dts +++ b/arch/xtensa/boot/dts/kc705.dts @@ -4,8 +4,11 @@ / { compatible = "cdns,xtensa-kc705"; + chosen { + bootargs = "earlycon=uart8250,mmio32,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug memmap=0x38000000"; + }; memory@0 { device_type = "memory"; - reg = <0x00000000 0x08000000>; + reg = <0x00000000 0x38000000>; }; }; From a450dc69dc57e2bd9de5a970f5015502e6950c73 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Fri, 1 Aug 2014 19:07:10 +0400 Subject: [PATCH 025/272] xtensa: fix kernel/user jump out of fast_unaligned Use correct register (a0, just read from the PS) to check user mode bit. Signed-off-by: Max Filippov --- arch/xtensa/kernel/align.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/xtensa/kernel/align.S b/arch/xtensa/kernel/align.S index d4cef6039a5c..25a65938dda8 100644 --- a/arch/xtensa/kernel/align.S +++ b/arch/xtensa/kernel/align.S @@ -441,7 +441,7 @@ ENTRY(fast_unaligned) mov a1, a2 rsr a0, ps - bbsi.l a2, PS_UM_BIT, 1f # jump if user mode + bbsi.l a0, PS_UM_BIT, 1f # jump if user mode movi a0, _kernel_exception jx a0 From c3ef1f4d379cbc79daf80ffb8d43c611da090b82 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Wed, 22 Jan 2014 09:16:37 +0400 Subject: [PATCH 026/272] xtensa: add double exception fixup handler for fast_unaligned fast_unaligned_fixup restores user registers and runs normal exception handler in the current stack frame. Unaligned load/store is retried after that. Signed-off-by: Max Filippov --- arch/xtensa/kernel/align.S | 43 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/arch/xtensa/kernel/align.S b/arch/xtensa/kernel/align.S index 25a65938dda8..904f32f05c09 100644 --- a/arch/xtensa/kernel/align.S +++ b/arch/xtensa/kernel/align.S @@ -8,6 +8,7 @@ * this archive for more details. * * Copyright (C) 2001 - 2005 Tensilica, Inc. + * Copyright (C) 2014 Cadence Design Systems Inc. * * Rewritten by Chris Zankel * @@ -174,6 +175,10 @@ ENTRY(fast_unaligned) s32i a0, a2, PT_AREG2 s32i a3, a2, PT_AREG3 + rsr a3, excsave1 + movi a4, fast_unaligned_fixup + s32i a4, a3, EXC_TABLE_FIXUP + /* Keep value of SAR in a0 */ rsr a0, sar @@ -430,6 +435,10 @@ ENTRY(fast_unaligned) .Linvalid_instruction_store: .Linvalid_instruction: + movi a4, 0 + rsr a3, excsave1 + s32i a4, a3, EXC_TABLE_FIXUP + /* Restore a4...a8 and SAR, set SP, and jump to default exception. */ l32i a8, a2, PT_AREG8 @@ -451,4 +460,38 @@ ENTRY(fast_unaligned) ENDPROC(fast_unaligned) +ENTRY(fast_unaligned_fixup) + + l32i a2, a3, EXC_TABLE_DOUBLE_SAVE + wsr a3, excsave1 + + l32i a8, a2, PT_AREG8 + l32i a7, a2, PT_AREG7 + l32i a6, a2, PT_AREG6 + l32i a5, a2, PT_AREG5 + l32i a4, a2, PT_AREG4 + l32i a0, a2, PT_AREG2 + xsr a0, depc # restore depc and a0 + wsr a0, sar + + rsr a0, exccause + s32i a0, a2, PT_DEPC # mark as a regular exception + + rsr a0, ps + bbsi.l a0, PS_UM_BIT, 1f # jump if user mode + + rsr a0, exccause + addx4 a0, a0, a3 # find entry in table + l32i a0, a0, EXC_TABLE_FAST_KERNEL # load handler + l32i a3, a2, PT_AREG3 + jx a0 +1: + rsr a0, exccause + addx4 a0, a0, a3 # find entry in table + l32i a0, a0, EXC_TABLE_FAST_USER # load handler + l32i a3, a2, PT_AREG3 + jx a0 + +ENDPROC(fast_unaligned_fixup) + #endif /* XCHAL_UNALIGNED_LOAD_EXCEPTION || XCHAL_UNALIGNED_STORE_EXCEPTION */ From e9500dd852ca6ede346500010545975bf10244dc Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 3 Aug 2014 00:42:38 +0400 Subject: [PATCH 027/272] xtensa: make fast_unaligned store restartable fast_unaligned may encounter DTLB miss or SEGFAULT during the store emulation. Don't update epc1 and lcount until after the store emulation is complete, so that the faulting store instruction could be replayed. Remove duplicate code handling zero overhead loops and calculate new epc1 and lcount in one place. Signed-off-by: Max Filippov --- arch/xtensa/kernel/align.S | 51 ++++++++++++++------------------------ 1 file changed, 19 insertions(+), 32 deletions(-) diff --git a/arch/xtensa/kernel/align.S b/arch/xtensa/kernel/align.S index 904f32f05c09..2c7c13d8e91a 100644 --- a/arch/xtensa/kernel/align.S +++ b/arch/xtensa/kernel/align.S @@ -277,18 +277,6 @@ ENTRY(fast_unaligned) /* Set target register. */ 1: - -#if XCHAL_HAVE_LOOPS - rsr a5, lend # check if we reached LEND - bne a7, a5, 1f - rsr a5, lcount # and LCOUNT != 0 - beqz a5, 1f - addi a5, a5, -1 # decrement LCOUNT and set - rsr a7, lbeg # set PC to LBEGIN - wsr a5, lcount -#endif - -1: wsr a7, epc1 # skip load instruction extui a4, a4, INSN_T, 4 # extract target register movi a5, .Lload_table addx8 a4, a4, a5 @@ -358,17 +346,6 @@ ENTRY(fast_unaligned) /* Get memory address */ 1: -#if XCHAL_HAVE_LOOPS - rsr a4, lend # check if we reached LEND - bne a7, a4, 1f - rsr a4, lcount # and LCOUNT != 0 - beqz a4, 1f - addi a4, a4, -1 # decrement LCOUNT and set - rsr a7, lbeg # set PC to LBEGIN - wsr a4, lcount -#endif - -1: wsr a7, epc1 # skip store instruction movi a4, ~3 and a4, a4, a8 # align memory address @@ -380,25 +357,25 @@ ENTRY(fast_unaligned) #endif __ssa8r a8 - __src_b a7, a5, a6 # lo-mask F..F0..0 (BE) 0..0F..F (LE) + __src_b a8, a5, a6 # lo-mask F..F0..0 (BE) 0..0F..F (LE) __src_b a6, a6, a5 # hi-mask 0..0F..F (BE) F..F0..0 (LE) #ifdef UNALIGNED_USER_EXCEPTION l32e a5, a4, -8 #else l32i a5, a4, 0 # load lower address word #endif - and a5, a5, a7 # mask - __sh a7, a3 # shift value - or a5, a5, a7 # or with original value + and a5, a5, a8 # mask + __sh a8, a3 # shift value + or a5, a5, a8 # or with original value #ifdef UNALIGNED_USER_EXCEPTION s32e a5, a4, -8 - l32e a7, a4, -4 + l32e a8, a4, -4 #else s32i a5, a4, 0 # store - l32i a7, a4, 4 # same for upper address word + l32i a8, a4, 4 # same for upper address word #endif __sl a5, a3 - and a6, a7, a6 + and a6, a8, a6 or a6, a6, a5 #ifdef UNALIGNED_USER_EXCEPTION s32e a6, a4, -4 @@ -406,9 +383,19 @@ ENTRY(fast_unaligned) s32i a6, a4, 4 #endif - /* Done. restore stack and return */ - .Lexit: +#if XCHAL_HAVE_LOOPS + rsr a4, lend # check if we reached LEND + bne a7, a4, 1f + rsr a4, lcount # and LCOUNT != 0 + beqz a4, 1f + addi a4, a4, -1 # decrement LCOUNT and set + rsr a7, lbeg # set PC to LBEGIN + wsr a4, lcount +#endif + +1: wsr a7, epc1 # skip emulated instruction + movi a4, 0 rsr a3, excsave1 s32i a4, a3, EXC_TABLE_FIXUP From 21570465a30f13197991eb2637d6ffc6c6880eef Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 4 Aug 2014 15:24:58 +0400 Subject: [PATCH 028/272] xtensa: move invalid unaligned instruction handler closer to its users With this change a threaded jump from .Linvalid_instruction_load to .Linvalid_instruction can be removed and more code may be added to common load/store exit path. Signed-off-by: Max Filippov --- arch/xtensa/kernel/align.S | 62 ++++++++++++++++++-------------------- 1 file changed, 29 insertions(+), 33 deletions(-) diff --git a/arch/xtensa/kernel/align.S b/arch/xtensa/kernel/align.S index 2c7c13d8e91a..87d80d8c33e5 100644 --- a/arch/xtensa/kernel/align.S +++ b/arch/xtensa/kernel/align.S @@ -230,10 +230,6 @@ ENTRY(fast_unaligned) addx8 a5, a6, a5 jx a5 # jump into table - /* Invalid instruction, CRITICAL! */ -.Linvalid_instruction_load: - j .Linvalid_instruction - /* Load: Load memory address. */ .Lload: movi a3, ~3 @@ -319,6 +315,35 @@ ENTRY(fast_unaligned) mov a3, a14 ; _j 1f; .align 8 mov a3, a15 ; _j 1f; .align 8 + /* We cannot handle this exception. */ + + .extern _kernel_exception +.Linvalid_instruction_load: +.Linvalid_instruction_store: + + movi a4, 0 + rsr a3, excsave1 + s32i a4, a3, EXC_TABLE_FIXUP + + /* Restore a4...a8 and SAR, set SP, and jump to default exception. */ + + l32i a8, a2, PT_AREG8 + l32i a7, a2, PT_AREG7 + l32i a6, a2, PT_AREG6 + l32i a5, a2, PT_AREG5 + l32i a4, a2, PT_AREG4 + wsr a0, sar + mov a1, a2 + + rsr a0, ps + bbsi.l a0, PS_UM_BIT, 2f # jump if user mode + + movi a0, _kernel_exception + jx a0 + +2: movi a0, _user_exception + jx a0 + 1: # a7: instruction pointer, a4: instruction, a3: value movi a6, 0 # mask: ffffffff:00000000 @@ -416,35 +441,6 @@ ENTRY(fast_unaligned) l32i a2, a2, PT_AREG2 rfe - /* We cannot handle this exception. */ - - .extern _kernel_exception -.Linvalid_instruction_store: -.Linvalid_instruction: - - movi a4, 0 - rsr a3, excsave1 - s32i a4, a3, EXC_TABLE_FIXUP - - /* Restore a4...a8 and SAR, set SP, and jump to default exception. */ - - l32i a8, a2, PT_AREG8 - l32i a7, a2, PT_AREG7 - l32i a6, a2, PT_AREG6 - l32i a5, a2, PT_AREG5 - l32i a4, a2, PT_AREG4 - wsr a0, sar - mov a1, a2 - - rsr a0, ps - bbsi.l a0, PS_UM_BIT, 1f # jump if user mode - - movi a0, _kernel_exception - jx a0 - -1: movi a0, _user_exception - jx a0 - ENDPROC(fast_unaligned) ENTRY(fast_unaligned_fixup) From a83b02e9bd0c28d27b6c6e5b184585f7a1b8bf86 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 4 Aug 2014 05:55:53 +0400 Subject: [PATCH 029/272] xtensa: allow single-stepping through unaligned load/store Update icount when icountlevel is non-zero but not greater than EXCM level when load/store instruction is successfully emulated. This allows single-stepping over such instruction in userspace debugger. Signed-off-by: Max Filippov --- arch/xtensa/kernel/align.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/xtensa/kernel/align.S b/arch/xtensa/kernel/align.S index 87d80d8c33e5..890004af03a9 100644 --- a/arch/xtensa/kernel/align.S +++ b/arch/xtensa/kernel/align.S @@ -421,6 +421,14 @@ ENTRY(fast_unaligned) 1: wsr a7, epc1 # skip emulated instruction + /* Update icount if we're single-stepping in userspace. */ + rsr a4, icountlevel + beqz a4, 1f + bgeui a4, LOCKLEVEL + 1, 1f + rsr a4, icount + addi a4, a4, 1 + wsr a4, icount +1: movi a4, 0 rsr a3, excsave1 s32i a4, a3, EXC_TABLE_FIXUP From d1b6ba82a50cecf94be540a3a153aa89d97511a0 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 31 Jul 2014 22:40:57 +0400 Subject: [PATCH 030/272] xtensa: fix a6 and a7 handling in fast_syscall_xtensa Remove restoring a6 on some return paths and instead modify and restore it in a single place, using symbolic name. Correctly restore a7 from PT_AREG7 in case of illegal a6 value. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov --- arch/xtensa/kernel/entry.S | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 21917e5fd53a..a06b7efaae82 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1001,9 +1001,8 @@ ENTRY(fast_syscall_xtensa) movi a7, 4 # sizeof(unsigned int) access_ok a3, a7, a0, a2, .Leac # a0: scratch reg, a2: sp - addi a6, a6, -1 # assuming SYS_XTENSA_ATOMIC_SET = 1 - _bgeui a6, SYS_XTENSA_COUNT - 1, .Lill - _bnei a6, SYS_XTENSA_ATOMIC_CMP_SWP - 1, .Lnswp + _bgeui a6, SYS_XTENSA_COUNT, .Lill + _bnei a6, SYS_XTENSA_ATOMIC_CMP_SWP, .Lnswp /* Fall through for ATOMIC_CMP_SWP. */ @@ -1015,27 +1014,26 @@ TRY s32i a5, a3, 0 # different, modify value l32i a7, a2, PT_AREG7 # restore a7 l32i a0, a2, PT_AREG0 # restore a0 movi a2, 1 # and return 1 - addi a6, a6, 1 # restore a6 (really necessary?) rfe 1: l32i a7, a2, PT_AREG7 # restore a7 l32i a0, a2, PT_AREG0 # restore a0 movi a2, 0 # return 0 (note that we cannot set - addi a6, a6, 1 # restore a6 (really necessary?) rfe .Lnswp: /* Atomic set, add, and exg_add. */ TRY l32i a7, a3, 0 # orig + addi a6, a6, -SYS_XTENSA_ATOMIC_SET add a0, a4, a7 # + arg moveqz a0, a4, a6 # set + addi a6, a6, SYS_XTENSA_ATOMIC_SET TRY s32i a0, a3, 0 # write new value mov a0, a2 mov a2, a7 l32i a7, a0, PT_AREG7 # restore a7 l32i a0, a0, PT_AREG0 # restore a0 - addi a6, a6, 1 # restore a6 (really necessary?) rfe CATCH @@ -1044,7 +1042,7 @@ CATCH movi a2, -EFAULT rfe -.Lill: l32i a7, a2, PT_AREG0 # restore a7 +.Lill: l32i a7, a2, PT_AREG7 # restore a7 l32i a0, a2, PT_AREG0 # restore a0 movi a2, -EINVAL rfe From 3cfc096e4c4fbc234634cf8a30d40348a25fc9ba Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 7 Aug 2014 01:03:01 +0400 Subject: [PATCH 031/272] xtensa: don't allow overflow/underflow on unaligned stack Double exceptions that happen during register window overflow/underflow are handled in the topmost stack frame, as if it was the only exception that occured. However unaligned access exception handler is special because it needs to analyze instruction that caused the exception, but the userspace instruction that triggered window exception is completely irrelevant. Unaligned data access is rather normal in the generic userspace code, but stack pointer manipulation must always be done by architecture-aware code and thus unaligned stack means a serious problem anyway. Use the default unaligned access handler that raises SIGBUS in case of unaligned access in window overflow/underflow handler. Signed-off-by: Max Filippov --- arch/xtensa/kernel/traps.c | 5 +---- arch/xtensa/kernel/vectors.S | 8 +++++++- arch/xtensa/kernel/vmlinux.lds.S | 4 ++-- 3 files changed, 10 insertions(+), 7 deletions(-) diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c index eebbfd8c26fc..9d2f45f010ef 100644 --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -101,9 +101,8 @@ static dispatch_init_table_t __initdata dispatch_init_table[] = { #if XCHAL_UNALIGNED_LOAD_EXCEPTION || XCHAL_UNALIGNED_STORE_EXCEPTION #ifdef CONFIG_XTENSA_UNALIGNED_USER { EXCCAUSE_UNALIGNED, USER, fast_unaligned }, -#else -{ EXCCAUSE_UNALIGNED, 0, do_unaligned_user }, #endif +{ EXCCAUSE_UNALIGNED, 0, do_unaligned_user }, { EXCCAUSE_UNALIGNED, KRNL, fast_unaligned }, #endif #ifdef CONFIG_MMU @@ -264,7 +263,6 @@ do_illegal_instruction(struct pt_regs *regs) */ #if XCHAL_UNALIGNED_LOAD_EXCEPTION || XCHAL_UNALIGNED_STORE_EXCEPTION -#ifndef CONFIG_XTENSA_UNALIGNED_USER void do_unaligned_user (struct pt_regs *regs) { @@ -286,7 +284,6 @@ do_unaligned_user (struct pt_regs *regs) } #endif -#endif void do_debug(struct pt_regs *regs) diff --git a/arch/xtensa/kernel/vectors.S b/arch/xtensa/kernel/vectors.S index 8453e6e39895..1b397a902292 100644 --- a/arch/xtensa/kernel/vectors.S +++ b/arch/xtensa/kernel/vectors.S @@ -454,8 +454,14 @@ _DoubleExceptionVector_WindowOverflow: s32i a0, a2, PT_DEPC _DoubleExceptionVector_handle_exception: + addi a0, a0, -EXCCAUSE_UNALIGNED + beqz a0, 2f addx4 a0, a0, a3 - l32i a0, a0, EXC_TABLE_FAST_USER + l32i a0, a0, EXC_TABLE_FAST_USER + 4 * EXCCAUSE_UNALIGNED + xsr a3, excsave1 + jx a0 +2: + movi a0, user_exception xsr a3, excsave1 jx a0 diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index d16db6df86f8..fc1bc2ba8d5d 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -269,13 +269,13 @@ SECTIONS .UserExceptionVector.literal) SECTION_VECTOR (_DoubleExceptionVector_literal, .DoubleExceptionVector.literal, - DOUBLEEXC_VECTOR_VADDR - 40, + DOUBLEEXC_VECTOR_VADDR - 48, SIZEOF(.UserExceptionVector.text), .UserExceptionVector.text) SECTION_VECTOR (_DoubleExceptionVector_text, .DoubleExceptionVector.text, DOUBLEEXC_VECTOR_VADDR, - 40, + 48, .DoubleExceptionVector.literal) . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3; From 9184289c979e78ce466993b53fc951633441e571 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 7 Aug 2014 03:32:30 +0400 Subject: [PATCH 032/272] xtensa: deprecate fast_xtensa and fast_spill_registers syscalls These syscalls are not used by userspace tools for some time now, and they have issues when called with invalid arguments. It's not worth changing signal delivery mechanism as we don't expect any new users for these syscalls. Let's keep them for backwards compatibility under #ifdef, disabled by default. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 26 ++++++++++++++++++++++++++ arch/xtensa/kernel/entry.S | 28 ++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3d83c29c9232..49c6c3d94449 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -238,6 +238,32 @@ config HIGHMEM If unsure, say Y. +config FAST_SYSCALL_XTENSA + bool "Enable fast atomic syscalls" + default n + help + fast_syscall_xtensa is a syscall that can make atomic operations + on UP kernel when processor has no s32c1i support. + + This syscall is deprecated. It may have issues when called with + invalid arguments. It is provided only for backwards compatibility. + Only enable it if your userspace software requires it. + + If unsure, say N. + +config FAST_SYSCALL_SPILL_REGISTERS + bool "Enable spill registers syscall" + default n + help + fast_syscall_spill_registers is a syscall that spills all active + register windows of a calling userspace task onto its stack. + + This syscall is deprecated. It may have issues when called with + invalid arguments. It is provided only for backwards compatibility. + Only enable it if your userspace software requires it. + + If unsure, say N. + endmenu config XTENSA_CALIBRATE_CCOUNT diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index a06b7efaae82..82bbfa5a05b3 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -986,6 +986,8 @@ ENDPROC(fast_syscall_unrecoverable) * j done */ +#ifdef CONFIG_FAST_SYSCALL_XTENSA + #define TRY \ .section __ex_table, "a"; \ .word 66f, 67f; \ @@ -1049,6 +1051,18 @@ CATCH ENDPROC(fast_syscall_xtensa) +#else /* CONFIG_FAST_SYSCALL_XTENSA */ + +ENTRY(fast_syscall_xtensa) + + l32i a0, a2, PT_AREG0 # restore a0 + movi a2, -ENOSYS + rfe + +ENDPROC(fast_syscall_xtensa) + +#endif /* CONFIG_FAST_SYSCALL_XTENSA */ + /* fast_syscall_spill_registers. * @@ -1064,6 +1078,8 @@ ENDPROC(fast_syscall_xtensa) * Note: We assume the stack pointer is EXC_TABLE_KSTK in the fixup handler. */ +#ifdef CONFIG_FAST_SYSCALL_SPILL_REGISTERS + ENTRY(fast_syscall_spill_registers) /* Register a FIXUP handler (pass current wb as a parameter) */ @@ -1398,6 +1414,18 @@ ENTRY(fast_syscall_spill_registers_fixup_return) ENDPROC(fast_syscall_spill_registers_fixup_return) +#else /* CONFIG_FAST_SYSCALL_SPILL_REGISTERS */ + +ENTRY(fast_syscall_spill_registers) + + l32i a0, a2, PT_AREG0 # restore a0 + movi a2, -ENOSYS + rfe + +ENDPROC(fast_syscall_spill_registers) + +#endif /* CONFIG_FAST_SYSCALL_SPILL_REGISTERS */ + #ifdef CONFIG_MMU /* * We should never get here. Bail out! From e512d56c799517f33b301d81e9a5e0ebf30c2d1e Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Wed, 13 Aug 2014 12:01:30 +0200 Subject: [PATCH 033/272] s390/3215: fix tty output containing tabs git commit 37f81fa1f63ad38e16125526bb2769ae0ea8d332 "n_tty: do O_ONLCR translation as a single write" surfaced a bug in the 3215 device driver. In combination this broke tab expansion for tty ouput. The cause is an asymmetry in the behaviour of tty3215_ops->write vs tty3215_ops->put_char. The put_char function scans for '\t' but the write function does not. As the driver has logic for the '\t' expansion remove XTABS from c_oflag of the initial termios as well. Reported-by: Stephen Powell Signed-off-by: Martin Schwidefsky --- drivers/s390/char/con3215.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index a6d47e5eee9e..c43aca69fb30 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -1035,12 +1035,26 @@ static int tty3215_write(struct tty_struct * tty, const unsigned char *buf, int count) { struct raw3215_info *raw; + int i, written; if (!tty) return 0; raw = (struct raw3215_info *) tty->driver_data; - raw3215_write(raw, buf, count); - return count; + written = count; + while (count > 0) { + for (i = 0; i < count; i++) + if (buf[i] == '\t' || buf[i] == '\n') + break; + raw3215_write(raw, buf, i); + count -= i; + buf += i; + if (count > 0) { + raw3215_putchar(raw, *buf); + count--; + buf++; + } + } + return written; } /* @@ -1188,7 +1202,7 @@ static int __init tty3215_init(void) driver->subtype = SYSTEM_TYPE_TTY; driver->init_termios = tty_std_termios; driver->init_termios.c_iflag = IGNBRK | IGNPAR; - driver->init_termios.c_oflag = ONLCR | XTABS; + driver->init_termios.c_oflag = ONLCR; driver->init_termios.c_lflag = ISIG; driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(driver, &tty3215_ops); From b8a2bbdf02b8c25f7eecce001bcc249a3b65c1b5 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Wed, 13 Aug 2014 14:24:58 +0200 Subject: [PATCH 034/272] s390/sclp: remove unnecessary XTABS flag The sclp line mode terminal driver scans the tty output for '\t', there is no need to set the XTABS flag in c_oflag. Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp_tty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index 7ed7a5987816..003663288e29 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -559,7 +559,7 @@ sclp_tty_init(void) driver->subtype = SYSTEM_TYPE_TTY; driver->init_termios = tty_std_termios; driver->init_termios.c_iflag = IGNBRK | IGNPAR; - driver->init_termios.c_oflag = ONLCR | XTABS; + driver->init_termios.c_oflag = ONLCR; driver->init_termios.c_lflag = ISIG | ECHO; driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(driver, &sclp_ops); From dd840087086f3b93ac20f7472b4fca59aff7b79f Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 15 Aug 2014 23:16:32 +0800 Subject: [PATCH 035/272] blk-mq: fix WARNING "percpu_ref_kill() called more than once!" Before doing queue release, the queue has been freezed already by blk_cleanup_queue(), so needn't to freeze queue for deleting tag set. This patch fixes the WARNING of "percpu_ref_kill() called more than once!" which is triggered during unloading block driver. Cc: Tejun Heo Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-mq.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 5189cb1e478a..ac8a0413664e 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1713,14 +1713,10 @@ static void blk_mq_del_queue_tag_set(struct request_queue *q) { struct blk_mq_tag_set *set = q->tag_set; - blk_mq_freeze_queue(q); - mutex_lock(&set->tag_list_lock); list_del_init(&q->tag_set_list); blk_mq_update_tag_set_depth(set); mutex_unlock(&set->tag_list_lock); - - blk_mq_unfreeze_queue(q); } static void blk_mq_add_queue_tag_set(struct blk_mq_tag_set *set, From 8a58d1f1f373238cb0d6d7f8d3dd723aa164b8ac Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 15 Aug 2014 12:38:41 -0600 Subject: [PATCH 036/272] blk-mq: get rid of unused BLK_MQ_F_SHOULD_SORT flag We used to use this for determining whether to sort the dispatch list, but it's unused now. Signed-off-by: Jens Axboe --- include/linux/blk-mq.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index eb726b9c5762..a1e31f274fcd 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -127,10 +127,9 @@ enum { BLK_MQ_RQ_QUEUE_ERROR = 2, /* end IO with error */ BLK_MQ_F_SHOULD_MERGE = 1 << 0, - BLK_MQ_F_SHOULD_SORT = 1 << 1, - BLK_MQ_F_TAG_SHARED = 1 << 2, - BLK_MQ_F_SG_MERGE = 1 << 3, - BLK_MQ_F_SYSFS_UP = 1 << 4, + BLK_MQ_F_TAG_SHARED = 1 << 1, + BLK_MQ_F_SG_MERGE = 1 << 2, + BLK_MQ_F_SYSFS_UP = 1 << 3, BLK_MQ_S_STOPPED = 0, BLK_MQ_S_TAG_ACTIVE = 1, From 3e81b59208fa4697c6c3b6eefb92892b47f8b1e7 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 6 Aug 2014 14:59:03 +0200 Subject: [PATCH 037/272] spi: sh-msiof: Fix leaking of unused DMA descriptors If dmaengine_prep_slave_sg() or dmaengine_submit() fail, we may leak unused DMA descriptors. As per Documentation/dmaengine.txt, once a DMA descriptor has been obtained, it must be submitted. Hence: - First prepare and submit all DMA descriptors, - Prepare the SPI controller for DMA, - Start DMA by calling dma_async_issue_pending(), - Make sure to call dmaengine_terminate_all() on all descriptors that haven't completed. Reported-by: Laurent Pinchart Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- drivers/spi/spi-sh-msiof.c | 81 ++++++++++++++++++++------------------ 1 file changed, 43 insertions(+), 38 deletions(-) diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 2a4354dcd661..887c2084130f 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -636,6 +636,26 @@ static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, dma_cookie_t cookie; int ret; + /* First prepare and submit the DMA request(s), as this may fail */ + if (rx) { + ier_bits |= IER_RDREQE | IER_RDMAE; + desc_rx = dmaengine_prep_slave_single(p->master->dma_rx, + p->rx_dma_addr, len, DMA_FROM_DEVICE, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc_rx) { + ret = -EAGAIN; + goto no_dma_rx; + } + + desc_rx->callback = sh_msiof_dma_complete; + desc_rx->callback_param = p; + cookie = dmaengine_submit(desc_rx); + if (dma_submit_error(cookie)) { + ret = cookie; + goto no_dma_rx; + } + } + if (tx) { ier_bits |= IER_TDREQE | IER_TDMAE; dma_sync_single_for_device(p->master->dma_tx->device->dev, @@ -643,17 +663,23 @@ static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, desc_tx = dmaengine_prep_slave_single(p->master->dma_tx, p->tx_dma_addr, len, DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!desc_tx) - return -EAGAIN; - } + if (!desc_tx) { + ret = -EAGAIN; + goto no_dma_tx; + } - if (rx) { - ier_bits |= IER_RDREQE | IER_RDMAE; - desc_rx = dmaengine_prep_slave_single(p->master->dma_rx, - p->rx_dma_addr, len, DMA_FROM_DEVICE, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!desc_rx) - return -EAGAIN; + if (rx) { + /* No callback */ + desc_tx->callback = NULL; + } else { + desc_tx->callback = sh_msiof_dma_complete; + desc_tx->callback_param = p; + } + cookie = dmaengine_submit(desc_tx); + if (dma_submit_error(cookie)) { + ret = cookie; + goto no_dma_tx; + } } /* 1 stage FIFO watermarks for DMA */ @@ -666,37 +692,16 @@ static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, reinit_completion(&p->done); - if (rx) { - desc_rx->callback = sh_msiof_dma_complete; - desc_rx->callback_param = p; - cookie = dmaengine_submit(desc_rx); - if (dma_submit_error(cookie)) { - ret = cookie; - goto stop_ier; - } + /* Now start DMA */ + if (tx) dma_async_issue_pending(p->master->dma_rx); - } - - if (tx) { - if (rx) { - /* No callback */ - desc_tx->callback = NULL; - } else { - desc_tx->callback = sh_msiof_dma_complete; - desc_tx->callback_param = p; - } - cookie = dmaengine_submit(desc_tx); - if (dma_submit_error(cookie)) { - ret = cookie; - goto stop_rx; - } + if (rx) dma_async_issue_pending(p->master->dma_tx); - } ret = sh_msiof_spi_start(p, rx); if (ret) { dev_err(&p->pdev->dev, "failed to start hardware\n"); - goto stop_tx; + goto stop_dma; } /* wait for tx fifo to be emptied / rx fifo to be filled */ @@ -726,14 +731,14 @@ static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, stop_reset: sh_msiof_reset_str(p); sh_msiof_spi_stop(p, rx); -stop_tx: +stop_dma: if (tx) dmaengine_terminate_all(p->master->dma_tx); -stop_rx: +no_dma_tx: if (rx) dmaengine_terminate_all(p->master->dma_rx); -stop_ier: sh_msiof_write(p, IER, 0); +no_dma_rx: return ret; } From 3819bc8752367eae0d72fa1c473dc88ea45631a7 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 6 Aug 2014 14:58:58 +0200 Subject: [PATCH 038/272] spi: rspi: Fix leaking of unused DMA descriptors If dmaengine_prep_slave_sg() or dmaengine_submit() fail, we may leak unused DMA descriptors. As per Documentation/dmaengine.txt, once a DMA descriptor has been obtained, it must be submitted. Hence: - First prepare and submit all DMA descriptors, - Prepare the SPI controller for DMA, - Start DMA by calling dma_async_issue_pending(), - Make sure to call dmaengine_terminate_all() on all descriptors that haven't completed. Reported-by: Laurent Pinchart Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- drivers/spi/spi-rspi.c | 94 ++++++++++++++++++++++++++---------------- 1 file changed, 58 insertions(+), 36 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index c850dfdfa9e3..ad87a98f8f68 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -472,25 +472,52 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx, dma_cookie_t cookie; int ret; - if (tx) { - desc_tx = dmaengine_prep_slave_sg(rspi->master->dma_tx, - tx->sgl, tx->nents, DMA_TO_DEVICE, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!desc_tx) - goto no_dma; - - irq_mask |= SPCR_SPTIE; - } + /* First prepare and submit the DMA request(s), as this may fail */ if (rx) { desc_rx = dmaengine_prep_slave_sg(rspi->master->dma_rx, rx->sgl, rx->nents, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (!desc_rx) - goto no_dma; + if (!desc_rx) { + ret = -EAGAIN; + goto no_dma_rx; + } + + desc_rx->callback = rspi_dma_complete; + desc_rx->callback_param = rspi; + cookie = dmaengine_submit(desc_rx); + if (dma_submit_error(cookie)) { + ret = cookie; + goto no_dma_rx; + } irq_mask |= SPCR_SPRIE; } + if (tx) { + desc_tx = dmaengine_prep_slave_sg(rspi->master->dma_tx, + tx->sgl, tx->nents, DMA_TO_DEVICE, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc_tx) { + ret = -EAGAIN; + goto no_dma_tx; + } + + if (rx) { + /* No callback */ + desc_tx->callback = NULL; + } else { + desc_tx->callback = rspi_dma_complete; + desc_tx->callback_param = rspi; + } + cookie = dmaengine_submit(desc_tx); + if (dma_submit_error(cookie)) { + ret = cookie; + goto no_dma_tx; + } + + irq_mask |= SPCR_SPTIE; + } + /* * DMAC needs SPxIE, but if SPxIE is set, the IRQ routine will be * called. So, this driver disables the IRQ while DMA transfer. @@ -503,34 +530,24 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx, rspi_enable_irq(rspi, irq_mask); rspi->dma_callbacked = 0; - if (rx) { - desc_rx->callback = rspi_dma_complete; - desc_rx->callback_param = rspi; - cookie = dmaengine_submit(desc_rx); - if (dma_submit_error(cookie)) - return cookie; + /* Now start DMA */ + if (rx) dma_async_issue_pending(rspi->master->dma_rx); - } - if (tx) { - if (rx) { - /* No callback */ - desc_tx->callback = NULL; - } else { - desc_tx->callback = rspi_dma_complete; - desc_tx->callback_param = rspi; - } - cookie = dmaengine_submit(desc_tx); - if (dma_submit_error(cookie)) - return cookie; + if (tx) dma_async_issue_pending(rspi->master->dma_tx); - } ret = wait_event_interruptible_timeout(rspi->wait, rspi->dma_callbacked, HZ); if (ret > 0 && rspi->dma_callbacked) ret = 0; - else if (!ret) + else if (!ret) { + dev_err(&rspi->master->dev, "DMA timeout\n"); ret = -ETIMEDOUT; + if (tx) + dmaengine_terminate_all(rspi->master->dma_tx); + if (rx) + dmaengine_terminate_all(rspi->master->dma_rx); + } rspi_disable_irq(rspi, irq_mask); @@ -541,11 +558,16 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx, return ret; -no_dma: - pr_warn_once("%s %s: DMA not available, falling back to PIO\n", - dev_driver_string(&rspi->master->dev), - dev_name(&rspi->master->dev)); - return -EAGAIN; +no_dma_tx: + if (rx) + dmaengine_terminate_all(rspi->master->dma_rx); +no_dma_rx: + if (ret == -EAGAIN) { + pr_warn_once("%s %s: DMA not available, falling back to PIO\n", + dev_driver_string(&rspi->master->dev), + dev_name(&rspi->master->dev)); + } + return ret; } static void rspi_receive_init(const struct rspi_data *rspi) From e409842a03b0c2c41c0959fef8a7563208af36c1 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Tue, 5 Aug 2014 12:27:15 -0400 Subject: [PATCH 039/272] staging: lustre: Remove circular dependency on header The following patch fixes a build error on sparc32. I think it should go to stable 3.16. Remove a circular dependency on atomic.h header file which leads to compilation failure on sparc32 as reported here: http://kisskb.ellerman.id.au/kisskb/buildresult/11340509/ The specific dependency is as follows: In file included from arch/sparc/include/asm/smp_32.h:24:0, from arch/sparc/include/asm/smp.h:6, from arch/sparc/include/asm/switch_to_32.h:4, from arch/sparc/include/asm/switch_to.h:6, from arch/sparc/include/asm/ptrace.h:84, from arch/sparc/include/asm/processor_32.h:16, from arch/sparc/include/asm/processor.h:6, from arch/sparc/include/asm/barrier_32.h:4, from arch/sparc/include/asm/barrier.h:6, from arch/sparc/include/asm/atomic_32.h:17, from arch/sparc/include/asm/atomic.h:6, from drivers/staging/lustre/lustre/obdclass/class_obd.c:38 Signed-off-by: Pranith Kumar CC: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/obdclass/class_obd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c index 8b19f3caa68f..701c6a776524 100644 --- a/drivers/staging/lustre/lustre/obdclass/class_obd.c +++ b/drivers/staging/lustre/lustre/obdclass/class_obd.c @@ -35,7 +35,7 @@ */ #define DEBUG_SUBSYSTEM S_CLASS -# include +# include #include "../include/obd_support.h" #include "../include/obd_class.h" From ec0a38bf8b28b036202070cf3ef271e343d9eafc Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Sun, 10 Aug 2014 22:16:55 +0100 Subject: [PATCH 040/272] staging: et131x: Fix errors caused by phydev->addr accesses before initialisation Fix two reported bugs, caused by et131x_adapter->phydev->addr being accessed before it is initialised, by: - letting et131x_mii_write() take a phydev address, instead of using the one stored in adapter by default. This is so et131x_mdio_write() can use it's own addr value. - removing implementation of et131x_mdio_reset(), as it's not needed. - moving a call to et131x_disable_phy_coma() in et131x_pci_setup(), which uses phydev->addr, until after the mdiobus has been registered. Link: https://bugzilla.kernel.org/show_bug.cgi?id=80751 Link: https://bugzilla.kernel.org/show_bug.cgi?id=77121 Cc: stable@vger.kernel.org Signed-off-by: Mark Einon Signed-off-by: Greg Kroah-Hartman --- drivers/staging/et131x/et131x.c | 68 +++++++++++++-------------------- 1 file changed, 27 insertions(+), 41 deletions(-) diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c index 8bf1eb485163..831b7c6fe494 100644 --- a/drivers/staging/et131x/et131x.c +++ b/drivers/staging/et131x/et131x.c @@ -1421,22 +1421,16 @@ static int et131x_mii_read(struct et131x_adapter *adapter, u8 reg, u16 *value) * @reg: the register to read * @value: 16-bit value to write */ -static int et131x_mii_write(struct et131x_adapter *adapter, u8 reg, u16 value) +static int et131x_mii_write(struct et131x_adapter *adapter, u8 addr, u8 reg, + u16 value) { struct mac_regs __iomem *mac = &adapter->regs->mac; - struct phy_device *phydev = adapter->phydev; int status = 0; - u8 addr; u32 delay = 0; u32 mii_addr; u32 mii_cmd; u32 mii_indicator; - if (!phydev) - return -EIO; - - addr = phydev->addr; - /* Save a local copy of the registers we are dealing with so we can * set them back */ @@ -1631,17 +1625,7 @@ static int et131x_mdio_write(struct mii_bus *bus, int phy_addr, struct net_device *netdev = bus->priv; struct et131x_adapter *adapter = netdev_priv(netdev); - return et131x_mii_write(adapter, reg, value); -} - -static int et131x_mdio_reset(struct mii_bus *bus) -{ - struct net_device *netdev = bus->priv; - struct et131x_adapter *adapter = netdev_priv(netdev); - - et131x_mii_write(adapter, MII_BMCR, BMCR_RESET); - - return 0; + return et131x_mii_write(adapter, phy_addr, reg, value); } /* et1310_phy_power_switch - PHY power control @@ -1656,18 +1640,20 @@ static int et131x_mdio_reset(struct mii_bus *bus) static void et1310_phy_power_switch(struct et131x_adapter *adapter, bool down) { u16 data; + struct phy_device *phydev = adapter->phydev; et131x_mii_read(adapter, MII_BMCR, &data); data &= ~BMCR_PDOWN; if (down) data |= BMCR_PDOWN; - et131x_mii_write(adapter, MII_BMCR, data); + et131x_mii_write(adapter, phydev->addr, MII_BMCR, data); } /* et131x_xcvr_init - Init the phy if we are setting it into force mode */ static void et131x_xcvr_init(struct et131x_adapter *adapter) { u16 lcr2; + struct phy_device *phydev = adapter->phydev; /* Set the LED behavior such that LED 1 indicates speed (off = * 10Mbits, blink = 100Mbits, on = 1000Mbits) and LED 2 indicates @@ -1688,7 +1674,7 @@ static void et131x_xcvr_init(struct et131x_adapter *adapter) else lcr2 |= (LED_VAL_LINKON << LED_TXRX_SHIFT); - et131x_mii_write(adapter, PHY_LED_2, lcr2); + et131x_mii_write(adapter, phydev->addr, PHY_LED_2, lcr2); } } @@ -3643,14 +3629,14 @@ static void et131x_adjust_link(struct net_device *netdev) et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, ®ister18); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18 | 0x4); - et131x_mii_write(adapter, PHY_INDEX_REG, + et131x_mii_write(adapter, phydev->addr, + PHY_MPHY_CONTROL_REG, register18 | 0x4); + et131x_mii_write(adapter, phydev->addr, PHY_INDEX_REG, register18 | 0x8402); - et131x_mii_write(adapter, PHY_DATA_REG, + et131x_mii_write(adapter, phydev->addr, PHY_DATA_REG, register18 | 511); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18); + et131x_mii_write(adapter, phydev->addr, + PHY_MPHY_CONTROL_REG, register18); } et1310_config_flow_control(adapter); @@ -3662,7 +3648,8 @@ static void et131x_adjust_link(struct net_device *netdev) et131x_mii_read(adapter, PHY_CONFIG, ®); reg &= ~ET_PHY_CONFIG_TX_FIFO_DEPTH; reg |= ET_PHY_CONFIG_FIFO_DEPTH_32; - et131x_mii_write(adapter, PHY_CONFIG, reg); + et131x_mii_write(adapter, phydev->addr, PHY_CONFIG, + reg); } et131x_set_rx_dma_timer(adapter); @@ -3675,14 +3662,14 @@ static void et131x_adjust_link(struct net_device *netdev) et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, ®ister18); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18 | 0x4); - et131x_mii_write(adapter, PHY_INDEX_REG, - register18 | 0x8402); - et131x_mii_write(adapter, PHY_DATA_REG, - register18 | 511); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18); + et131x_mii_write(adapter, phydev->addr, + PHY_MPHY_CONTROL_REG, register18 | 0x4); + et131x_mii_write(adapter, phydev->addr, + PHY_INDEX_REG, register18 | 0x8402); + et131x_mii_write(adapter, phydev->addr, + PHY_DATA_REG, register18 | 511); + et131x_mii_write(adapter, phydev->addr, + PHY_MPHY_CONTROL_REG, register18); } /* Free the packets being actively sent & stopped */ @@ -4644,10 +4631,6 @@ static int et131x_pci_setup(struct pci_dev *pdev, /* Copy address into the net_device struct */ memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN); - /* Init variable for counting how long we do not have link status */ - adapter->boot_coma = 0; - et1310_disable_phy_coma(adapter); - rc = -ENOMEM; /* Setup the mii_bus struct */ @@ -4663,7 +4646,6 @@ static int et131x_pci_setup(struct pci_dev *pdev, adapter->mii_bus->priv = netdev; adapter->mii_bus->read = et131x_mdio_read; adapter->mii_bus->write = et131x_mdio_write; - adapter->mii_bus->reset = et131x_mdio_reset; adapter->mii_bus->irq = kmalloc_array(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL); if (!adapter->mii_bus->irq) @@ -4687,6 +4669,10 @@ static int et131x_pci_setup(struct pci_dev *pdev, /* Setup et1310 as per the documentation */ et131x_adapter_setup(adapter); + /* Init variable for counting how long we do not have link status */ + adapter->boot_coma = 0; + et1310_disable_phy_coma(adapter); + /* We can enable interrupts now * * NOTE - Because registration of interrupt handler is done in the From 299ef8cd6556d9cd968f672ad30c6df4cfcfc729 Mon Sep 17 00:00:00 2001 From: Rickard Strandqvist Date: Sun, 10 Aug 2014 01:46:49 +0200 Subject: [PATCH 041/272] staging: lustre: lustre: libcfs: workitem.c: Cleaning up missing null-terminate after strncpy call Added a guaranteed null-terminate after call to strncpy. Signed-off-by: Rickard Strandqvist Reviewed-by: Kees Cook Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/libcfs/workitem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/lustre/lustre/libcfs/workitem.c b/drivers/staging/lustre/lustre/libcfs/workitem.c index 65629579bd7d..03ab9e046784 100644 --- a/drivers/staging/lustre/lustre/libcfs/workitem.c +++ b/drivers/staging/lustre/lustre/libcfs/workitem.c @@ -365,6 +365,7 @@ cfs_wi_sched_create(char *name, struct cfs_cpt_table *cptab, return -ENOMEM; strncpy(sched->ws_name, name, CFS_WS_NAME_LEN); + sched->ws_name[CFS_WS_NAME_LEN - 1] = '\0'; sched->ws_cptab = cptab; sched->ws_cpt = cpt; From eb29835fb3ae9f7a8c8a4ae92e192052c3473557 Mon Sep 17 00:00:00 2001 From: Seunghun Lee Date: Thu, 14 Aug 2014 02:02:48 +0900 Subject: [PATCH 042/272] staging: android: fix a possible memory leak Memory allocated by kstrdup should be freed. CC: Brian Swetland Acked-by: Dan Carpenter Signed-off-by: Seunghun Lee Signed-off-by: Greg Kroah-Hartman --- drivers/staging/android/logger.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c index 9b47e66599a3..0bf0d24d12d5 100644 --- a/drivers/staging/android/logger.c +++ b/drivers/staging/android/logger.c @@ -790,7 +790,7 @@ static int __init create_log(char *log_name, int size) if (unlikely(ret)) { pr_err("failed to register misc device for log '%s'!\n", log->misc.name); - goto out_free_log; + goto out_free_misc_name; } pr_info("created %luK log '%s'\n", @@ -798,6 +798,9 @@ static int __init create_log(char *log_name, int size) return 0; +out_free_misc_name: + kfree(log->misc.name); + out_free_log: kfree(log); From 302fb1781783ded370f515e8e649b8285ee29cdc Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 29 Jul 2014 02:12:55 +0400 Subject: [PATCH 043/272] sh-pfc: r8a7791: fix CAN pin groups I had made last-minute changes before submitting the patch "sh-pfc: r8a7791: add CAN pin groups"; now I'm seeing that they weren't complete: I had missed update to the pin group names in pin[01]_groups[]. Drop the "_a" suffixes there. Signed-off-by: Sergei Shtylyov Acked-by: Laurent Pinchart Signed-off-by: Linus Walleij --- drivers/pinctrl/sh-pfc/pfc-r8a7791.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7791.c b/drivers/pinctrl/sh-pfc/pfc-r8a7791.c index 576d41b459e9..c6e5deba238e 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7791.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7791.c @@ -4509,24 +4509,24 @@ static const char * const audio_clk_groups[] = { }; static const char * const can0_groups[] = { - "can0_data_a", + "can0_data", "can0_data_b", "can0_data_c", "can0_data_d", "can0_data_e", "can0_data_f", - "can_clk_a", + "can_clk", "can_clk_b", "can_clk_c", "can_clk_d", }; static const char * const can1_groups[] = { - "can1_data_a", + "can1_data", "can1_data_b", "can1_data_c", "can1_data_d", - "can_clk_a", + "can_clk", "can_clk_b", "can_clk_c", "can_clk_d", From 99e872d953fb4484029c12dce909f514ae095d8d Mon Sep 17 00:00:00 2001 From: Sonny Rao Date: Thu, 31 Jul 2014 22:58:00 -0700 Subject: [PATCH 044/272] pinctrl: rockchip: fix rk3288 gpio0 configuration On rk3288, for gpio bank 0, the registers which configure pull-up, iomux, and drive strength don't implement the enable bits in the upper half of the register, unlike the other gpio configuration registers, and so the kernel must perform a read-modify-write of the register to update a particular gpio in that bank. The current code is actually clobbering the contents of the register, so this fixes it by using regmap_update_bits and masking out only the bits which require updating. In the case of bank0 on rk3288 the upper enable bits will just get ignored, and the other configurations won't get clobbered. Signed-off-by: Sonny Rao Reviewed-by: Heiko Stuebner Reviewed-by: Doug Anderson Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-rockchip.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 5e8b2e04cd7a..0c372a300cb8 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -438,7 +438,7 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) int reg, ret, mask; unsigned long flags; u8 bit; - u32 data; + u32 data, rmask; if (iomux_num > 3) return -EINVAL; @@ -478,8 +478,9 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) spin_lock_irqsave(&bank->slock, flags); data = (mask << (bit + 16)); + rmask = data | (data >> 16); data |= (mux & mask) << bit; - ret = regmap_write(regmap, reg, data); + ret = regmap_update_bits(regmap, reg, rmask, data); spin_unlock_irqrestore(&bank->slock, flags); @@ -634,7 +635,7 @@ static int rk3288_set_drive(struct rockchip_pin_bank *bank, int pin_num, struct regmap *regmap; unsigned long flags; int reg, ret, i; - u32 data; + u32 data, rmask; u8 bit; rk3288_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); @@ -657,9 +658,10 @@ static int rk3288_set_drive(struct rockchip_pin_bank *bank, int pin_num, /* enable the write to the equivalent lower bits */ data = ((1 << RK3288_DRV_BITS_PER_PIN) - 1) << (bit + 16); + rmask = data | (data >> 16); data |= (ret << bit); - ret = regmap_write(regmap, reg, data); + ret = regmap_update_bits(regmap, reg, rmask, data); spin_unlock_irqrestore(&bank->slock, flags); return ret; @@ -722,7 +724,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank, int reg, ret; unsigned long flags; u8 bit; - u32 data; + u32 data, rmask; dev_dbg(info->dev, "setting pull of GPIO%d-%d to %d\n", bank->bank_num, pin_num, pull); @@ -750,6 +752,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank, /* enable the write to the equivalent lower bits */ data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16); + rmask = data | (data >> 16); switch (pull) { case PIN_CONFIG_BIAS_DISABLE: @@ -770,7 +773,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank, return -EINVAL; } - ret = regmap_write(regmap, reg, data); + ret = regmap_update_bits(regmap, reg, rmask, data); spin_unlock_irqrestore(&bank->slock, flags); break; From 8e1594db7e43eaf4ea88b870e97fa3ab9f8f98e0 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 31 Jul 2014 18:22:17 +0300 Subject: [PATCH 045/272] pinctrl: tegra-xusb: fix an off by one test This shoudld be ">= ARRAY_SIZE()" instead of "> ARRAY_SIZE()". Fixes: dc0a39386687 ('pinctrl: Add NVIDIA Tegra XUSB pad controller support') Signed-off-by: Dan Carpenter Acked-by: Stephen Warren Acked-by: Thierry Reding Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-tegra-xusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-tegra-xusb.c b/drivers/pinctrl/pinctrl-tegra-xusb.c index a06620474845..419a047b9150 100644 --- a/drivers/pinctrl/pinctrl-tegra-xusb.c +++ b/drivers/pinctrl/pinctrl-tegra-xusb.c @@ -680,7 +680,7 @@ static struct phy *tegra_xusb_padctl_xlate(struct device *dev, if (args->args_count <= 0) return ERR_PTR(-EINVAL); - if (index > ARRAY_SIZE(padctl->phys)) + if (index >= ARRAY_SIZE(padctl->phys)) return ERR_PTR(-EINVAL); return padctl->phys[index]; From 8a3cfb7c1700732df9fc13439b313bf8db39fefd Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 31 Jul 2014 18:23:08 +0300 Subject: [PATCH 046/272] pinctrl: tegra-xusb: testing wrong variable in probe() There is a cut and paste bug so we test the wrong variable. "err" is never less than zero at this point. Signed-off-by: Dan Carpenter Acked-by: Stephen Warren Acked-by: Thierry Reding Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-tegra-xusb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-tegra-xusb.c b/drivers/pinctrl/pinctrl-tegra-xusb.c index 419a047b9150..e641b4226c42 100644 --- a/drivers/pinctrl/pinctrl-tegra-xusb.c +++ b/drivers/pinctrl/pinctrl-tegra-xusb.c @@ -930,7 +930,8 @@ static int tegra_xusb_padctl_probe(struct platform_device *pdev) padctl->provider = devm_of_phy_provider_register(&pdev->dev, tegra_xusb_padctl_xlate); - if (err < 0) { + if (IS_ERR(padctl->provider)) { + err = PTR_ERR(padctl->provider); dev_err(&pdev->dev, "failed to register PHYs: %d\n", err); goto unregister; } From 1d54f0fd58314d5b197f6d16338263c00908daab Mon Sep 17 00:00:00 2001 From: Patrice CHOTARD Date: Fri, 1 Aug 2014 09:38:43 +0200 Subject: [PATCH 047/272] pinctrl: abx500: remove useless check pctldev can't be NULL at this stage so remove the check Reported-by: Dan Carpenter Signed-off-by: Patrice Chotard Signed-off-by: Linus Walleij --- drivers/pinctrl/nomadik/pinctrl-abx500.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c index a53a689a2bfa..8c6fd8d4dd3c 100644 --- a/drivers/pinctrl/nomadik/pinctrl-abx500.c +++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c @@ -620,8 +620,7 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s, } else seq_printf(s, " %-9s", chip->get(chip, offset) ? "hi" : "lo"); - if (pctldev) - mode = abx500_get_mode(pctldev, chip, offset); + mode = abx500_get_mode(pctldev, chip, offset); seq_printf(s, " %s", (mode < 0) ? "unknown" : modes[mode]); From 4b6fe45a79a9ca2429eaf8713be7bdc936c211c3 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Tue, 5 Aug 2014 21:43:16 -0700 Subject: [PATCH 048/272] pinctrl: pinctrl-at91.c: fix decimal printf format specifiers prefixed with 0x The prefix suggests the number should be printed in hex, so use the %x specifier to do that. Found by using regex suggested by Joe Perches. Signed-off-by: Hans Wennborg Acked-by: Alexandre Belloni Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-at91.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index af1ba4fc150d..60464a2648aa 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -497,10 +497,10 @@ static struct at91_pinctrl_mux_ops at91sam9x5_ops = { static void at91_pin_dbg(const struct device *dev, const struct at91_pmx_pin *pin) { if (pin->mux) { - dev_dbg(dev, "pio%c%d configured as periph%c with conf = 0x%lu\n", + dev_dbg(dev, "pio%c%d configured as periph%c with conf = 0x%lx\n", pin->bank + 'A', pin->pin, pin->mux - 1 + 'A', pin->conf); } else { - dev_dbg(dev, "pio%c%d configured as gpio with conf = 0x%lu\n", + dev_dbg(dev, "pio%c%d configured as gpio with conf = 0x%lx\n", pin->bank + 'A', pin->pin, pin->conf); } } From f0e4cba2534cd88476dff920727c81350130f3c5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 29 Jul 2014 14:14:55 +0200 Subject: [PATCH 049/272] USB: option: reduce interrupt-urb logging verbosity Do not log normal interrupt-urb shutdowns as errors. The option driver has always been logging any nonzero interrupt-urb status as an error, including when the urb is killed during normal operation. Commit 9096f1fbba91 ("USB: usb_wwan: fix potential NULL-deref at resume") moved the interrupt urb submission from port probe and release to open and close, thus potentially increasing the number of these false-positive error messages dramatically. Reported-by: Ed Butler Tested-by: Ed Butler Cc: Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index a9688940543d..34f142be5b83 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1916,6 +1916,8 @@ static void option_instat_callback(struct urb *urb) dev_dbg(dev, "%s: type %x req %x\n", __func__, req_pkt->bRequestType, req_pkt->bRequest); } + } else if (status == -ENOENT || status == -ESHUTDOWN) { + dev_dbg(dev, "%s: urb stopped: %d\n", __func__, status); } else dev_err(dev, "%s: error %d\n", __func__, status); From d77302739d900bbca5e901a3b7ac48c907ee6c93 Mon Sep 17 00:00:00 2001 From: Brennan Ashton Date: Wed, 6 Aug 2014 08:46:44 -0700 Subject: [PATCH 050/272] USB: option: add VIA Telecom CDS7 chipset device id This VIA Telecom baseband processor is used is used by by u-blox in both the FW2770 and FW2760 products and may be used in others as well. This patch has been tested on both of these modem versions. Signed-off-by: Brennan Ashton Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 34f142be5b83..408aad1b1c98 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -494,6 +494,10 @@ static void option_instat_callback(struct urb *urb); #define INOVIA_VENDOR_ID 0x20a6 #define INOVIA_SEW858 0x1105 +/* VIA Telecom */ +#define VIATELECOM_VENDOR_ID 0x15eb +#define VIATELECOM_PRODUCT_CDS7 0x0001 + /* some devices interfaces need special handling due to a number of reasons */ enum option_blacklist_reason { OPTION_BLACKLIST_NONE = 0, @@ -1724,6 +1728,7 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) }, + { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); From 63a901c06e3c2c45bd601916fe04e870e9ccae1e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 7 Aug 2014 16:00:13 +0200 Subject: [PATCH 051/272] Revert "USB: option,zte_ev: move most ZTE CDMA devices to zte_ev" This reverts commit 73228a0538a7 ("USB: option,zte_ev: move most ZTE CDMA devices to zte_ev"). Move the IDs of the devices that were previously driven by the option driver back to that driver. As several users have reported, the zte_ev driver is causing random disconnects as well as reconnect failures. A closer analysis of the zte_ev setup code reveals that it consists of standard CDC requests (SET/GET_LINE_CODING and SET_CONTROL_LINE_STATE) but unfortunately fails to get some of those right. In particular, as reported by Liu Lei, it fails to lower DTR/RTS on close. It also appears that the control requests lack the interface argument. Note that the zte_ev driver is based on code (once) distributed by ZTE that still appears to originally have been reverse-engineered and bolted onto the generic driver. Since line control is already handled properly by the option driver, and the SET/GET_LINE_CODING requests appears to be redundant (amounts to a SET 9600 8N1), this is a first step in ultimately removing the redundant zte_ev driver. Note that AC2726 had already been moved back to option, and that some IDs were in the device table of both drivers prior to the commit being reverted. Reported-by: Lei Liu Cc: Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 24 +++++++++++++++++++++--- drivers/usb/serial/zte_ev.c | 18 ------------------ 2 files changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 408aad1b1c98..54a8120897a6 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -275,8 +275,12 @@ static void option_instat_callback(struct urb *urb); #define ZTE_PRODUCT_MF622 0x0001 #define ZTE_PRODUCT_MF628 0x0015 #define ZTE_PRODUCT_MF626 0x0031 -#define ZTE_PRODUCT_MC2718 0xffe8 #define ZTE_PRODUCT_AC2726 0xfff1 +#define ZTE_PRODUCT_CDMA_TECH 0xfffe +#define ZTE_PRODUCT_AC8710T 0xffff +#define ZTE_PRODUCT_MC2718 0xffe8 +#define ZTE_PRODUCT_AD3812 0xffeb +#define ZTE_PRODUCT_MC2716 0xffed #define BENQ_VENDOR_ID 0x04a5 #define BENQ_PRODUCT_H10 0x4068 @@ -531,10 +535,18 @@ static const struct option_blacklist_info zte_k3765_z_blacklist = { .reserved = BIT(4), }; +static const struct option_blacklist_info zte_ad3812_z_blacklist = { + .sendsetup = BIT(0) | BIT(1) | BIT(2), +}; + static const struct option_blacklist_info zte_mc2718_z_blacklist = { .sendsetup = BIT(1) | BIT(2) | BIT(3) | BIT(4), }; +static const struct option_blacklist_info zte_mc2716_z_blacklist = { + .sendsetup = BIT(1) | BIT(2) | BIT(3), +}; + static const struct option_blacklist_info huawei_cdc12_blacklist = { .reserved = BIT(1) | BIT(2), }; @@ -1074,6 +1086,7 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012, 0xff) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, + { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ @@ -1548,13 +1561,18 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff93, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff94, 0xff, 0xff, 0xff) }, - /* NOTE: most ZTE CDMA devices should be driven by zte_ev, not option */ + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710T, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2718, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_mc2718_z_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AD3812, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) }, { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) }, - { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) }, { USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) }, diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index e40ab739c4a6..4ecff9cba286 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -272,27 +272,9 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) } static const struct usb_device_id id_table[] = { - /* AC8710, AC8710T */ - { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffff, 0xff, 0xff, 0xff) }, - /* AC8700 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfffe, 0xff, 0xff, 0xff) }, /* MG880 */ { USB_DEVICE(0x19d2, 0xfffd) }, - { USB_DEVICE(0x19d2, 0xfffc) }, - { USB_DEVICE(0x19d2, 0xfffb) }, - /* AC8710_V3 */ - { USB_DEVICE(0x19d2, 0xfff6) }, - { USB_DEVICE(0x19d2, 0xfff7) }, - { USB_DEVICE(0x19d2, 0xfff8) }, - { USB_DEVICE(0x19d2, 0xfff9) }, - { USB_DEVICE(0x19d2, 0xffee) }, - /* AC2716, MC2716 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffed, 0xff, 0xff, 0xff) }, - /* AD3812 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffeb, 0xff, 0xff, 0xff) }, - { USB_DEVICE(0x19d2, 0xffec) }, { USB_DEVICE(0x05C6, 0x3197) }, - { USB_DEVICE(0x05C6, 0x6000) }, { USB_DEVICE(0x05C6, 0x9008) }, { }, }; From 95be5739588c56a9327e477aa0ba3c81c5cf8631 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 7 Aug 2014 16:00:14 +0200 Subject: [PATCH 052/272] USB: zte_ev: remove duplicate Gobi PID Remove dublicate Gobi PID 0x9008 which is already handled by the qcserial driver since commit f05932c0caf4 ("USB: qcserial: Add extra device IDs"). Fixes: 799ee9243d89 ("USB: serial: add zte_ev.c driver") Cc: Signed-off-by: Johan Hovold --- drivers/usb/serial/zte_ev.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index 4ecff9cba286..960f70edcfd7 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -275,7 +275,6 @@ static const struct usb_device_id id_table[] = { /* MG880 */ { USB_DEVICE(0x19d2, 0xfffd) }, { USB_DEVICE(0x05C6, 0x3197) }, - { USB_DEVICE(0x05C6, 0x9008) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); From 754eb21c0bbbbc4b8830a9a864b286323b84225f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 7 Aug 2014 16:00:15 +0200 Subject: [PATCH 053/272] USB: zte_ev: remove duplicate Qualcom PID Remove dublicate Qualcom PID 0x3197 which is already handled by the moto-modem driver since commit 6986a978eec7 ("USB: add new moto_modem driver for some Morotola phones"). Fixes: 799ee9243d89 ("USB: serial: add zte_ev.c driver") Cc: Signed-off-by: Johan Hovold --- drivers/usb/serial/zte_ev.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c index 960f70edcfd7..1a132e9e947a 100644 --- a/drivers/usb/serial/zte_ev.c +++ b/drivers/usb/serial/zte_ev.c @@ -274,7 +274,6 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port) static const struct usb_device_id id_table[] = { /* MG880 */ { USB_DEVICE(0x19d2, 0xfffd) }, - { USB_DEVICE(0x05C6, 0x3197) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); From 6552cc7f09261db2aeaae389aa2c05a74b3a93b4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 13 Aug 2014 17:56:52 +0200 Subject: [PATCH 054/272] USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID Add device id for Basic Micro ATOM Nano USB2Serial adapters. Reported-by: Nicolas Alt Tested-by: Nicolas Alt Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 216ce3078270..93e088ed4306 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -146,6 +146,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_BM_ATOM_NANO_PID) }, { USB_DEVICE(FTDI_VID, FTDI_NXTCAM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_EV3CON_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) }, diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 1e58d90a0b6c..3168a0191973 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -42,6 +42,8 @@ /* www.candapter.com Ewert Energy Systems CANdapter device */ #define FTDI_CANDAPTER_PID 0x9F80 /* Product Id */ +#define FTDI_BM_ATOM_NANO_PID 0xa559 /* Basic Micro ATOM Nano USB2Serial */ + /* * Texas Instruments XDS100v2 JTAG / BeagleBone A3 * http://processors.wiki.ti.com/index.php/XDS100 From 91fcb1ce420e0a5f8d92d556d7008a78bc6ce1eb Mon Sep 17 00:00:00 2001 From: Greg KH Date: Fri, 15 Aug 2014 15:22:21 +0800 Subject: [PATCH 055/272] USB: serial: pl2303: add device id for ztek device This adds a new device id to the pl2303 driver for the ZTEK device. Reported-by: Mike Chu Cc: stable Signed-off-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 1 + drivers/usb/serial/pl2303.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index b3d5a35c0d4b..e9bad928039f 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -45,6 +45,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, + { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 42bc082896ac..71fd9da1d6e7 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -22,6 +22,7 @@ #define PL2303_PRODUCT_ID_GPRS 0x0609 #define PL2303_PRODUCT_ID_HCR331 0x331a #define PL2303_PRODUCT_ID_MOTOROLA 0x0307 +#define PL2303_PRODUCT_ID_ZTEK 0xe1f1 #define ATEN_VENDOR_ID 0x0557 #define ATEN_VENDOR_ID2 0x0547 From 646907f5bfb0782c731ae9ff6fb63471a3566132 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ja=C5=A1a=20Bartelj?= Date: Sat, 16 Aug 2014 12:44:27 +0200 Subject: [PATCH 056/272] USB: ftdi_sio: Added PID for new ekey device MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Added support to the ftdi_sio driver for ekey Converter USB which uses an FT232BM chip. Signed-off-by: Jaša Bartelj Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 2 ++ drivers/usb/serial/ftdi_sio_ids.h | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 93e088ed4306..824ea5e7ec8b 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -935,6 +935,8 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_2_PID) }, { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_3_PID) }, { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_4_PID) }, + /* ekey Devices */ + { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) }, /* Infineon Devices */ { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) }, { } /* Terminating entry */ diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 3168a0191973..70b0b1d88ae9 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -1380,3 +1380,8 @@ #define BRAINBOXES_US_160_6_PID 0x9006 /* US-160 16xRS232 1Mbaud Port 11 and 12 */ #define BRAINBOXES_US_160_7_PID 0x9007 /* US-160 16xRS232 1Mbaud Port 13 and 14 */ #define BRAINBOXES_US_160_8_PID 0x9008 /* US-160 16xRS232 1Mbaud Port 15 and 16 */ + +/* + * ekey biometric systems GmbH (http://ekey.net/) + */ +#define FTDI_EKEY_CONV_USB_PID 0xCB08 /* Converter USB */ From 090727b880ff3c56e333f267cc24ab076f3bc096 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Thu, 7 Aug 2014 15:01:33 -0300 Subject: [PATCH 057/272] ARM: dts: imx53-qsrb: Fix suspend/resume The following error is seen after a suspend/resume cycle on a mx53qsb with a MC34708 PMIC: root@freescale /$ echo mem > /sys/power/state [ 32.630592] PM: Syncing filesystems ... done. [ 32.643924] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 32.652384] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 32.679156] PM: suspend of devices complete after 13.113 msecs [ 32.685128] PM: suspend devices took 0.030 seconds [ 32.696109] PM: late suspend of devices complete after 6.133 msecs [ 33.313032] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 33.322009] PM: noirq suspend of devices complete after 619.667 msecs [ 33.328544] Disabling non-boot CPUs ... [ 33.335031] PM: noirq resume of devices complete after 2.352 msecs [ 33.842940] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 33.976095] [sched_delayed] sched: RT throttling activated [ 33.984804] PM: early resume of devices complete after 642.642 msecs [ 34.352954] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 34.862910] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 34.996595] PM: resume of devices complete after 1005.367 msecs [ 35.372925] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 35.882911] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 35.955707] PM: resume devices took 1.970 seconds [ 35.960445] Restarting tasks ... done. [ 35.993386] fec 63fec000.ethernet eth0: Link is Down [ 36.392980] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 36.902908] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 36.953036] ata1: SATA link down (SStatus 0 SControl 300) [ 37.412922] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 37.922906] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 37.993379] fec 63fec000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx [ 38.432938] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 38.942920] mc13xxx 0-0008: Failed to read IRQ status: -110 [ 39.452933] mc13xxx 0-0008: Failed to read IRQ status: -110 (flood of this error message continues forever) Commit 5169df8be0a432ee ("ARM: dts: i.MX53: add support for MCIMX53-START-R") missed to configure the IOMUX for the PMIC IRQ pin. Configure the PMIC IRQ pin so that the suspend/resume sequence behaves cleanly as expected. Cc: # 3.16 Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53-qsrb.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/imx53-qsrb.dts b/arch/arm/boot/dts/imx53-qsrb.dts index f1bbf9a32991..82d623d05915 100644 --- a/arch/arm/boot/dts/imx53-qsrb.dts +++ b/arch/arm/boot/dts/imx53-qsrb.dts @@ -28,6 +28,12 @@ MX53_PAD_CSI0_DAT9__I2C1_SCL 0x400001ec >; }; + + pinctrl_pmic: pmicgrp { + fsl,pins = < + MX53_PAD_CSI0_DAT5__GPIO5_23 0x1e4 /* IRQ */ + >; + }; }; }; @@ -38,6 +44,8 @@ pmic: mc34708@8 { compatible = "fsl,mc34708"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pmic>; reg = <0x08>; interrupt-parent = <&gpio5>; interrupts = <23 0x8>; From 2c4e3dbf63b39d44a291db70016c718f45d9cd46 Mon Sep 17 00:00:00 2001 From: Arjun Sreedharan Date: Mon, 18 Aug 2014 11:17:33 +0530 Subject: [PATCH 058/272] usb: phy: return -ENODEV on failure of try_module_get When __usb_find_phy_dev() does not return error and try_module_get() fails, return -ENODEV. Signed-off-by: Arjun Sreedharan Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 6d0f6080eceb..045cd309367a 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -232,6 +232,9 @@ struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) phy = __usb_find_phy_dev(dev, &phy_bind_list, index); if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { dev_dbg(dev, "unable to find transceiver\n"); + if (!IS_ERR(phy)) + phy = ERR_PTR(-ENODEV); + goto err0; } From 0c5824083b8ca4aff083dc74024d0bfd46f9da9d Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Mon, 11 Aug 2014 01:29:37 +0530 Subject: [PATCH 059/272] usb: phy: drop kfree of devm_kzalloc's data Using kfree to free data allocated with devm_kzalloc causes double frees. The Coccinelle semantic patch that fixes this problem is as follows: // @@ expression x; @@ x = devm_kzalloc(...) ... ?-kfree(x); // Reviewed-by: Jingoo Han Acked-by: Julia Lawall Signed-off-by: Himangi Saraogi Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-gpio-vbus-usb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index ea9e705555df..f4b14bd97e14 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -260,10 +260,8 @@ static int gpio_vbus_probe(struct platform_device *pdev) gpio_vbus->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), GFP_KERNEL); - if (!gpio_vbus->phy.otg) { - kfree(gpio_vbus); + if (!gpio_vbus->phy.otg) return -ENOMEM; - } platform_set_drvdata(pdev, gpio_vbus); gpio_vbus->dev = &pdev->dev; From 4958cf32f66df854b932b601eef2da3f95973339 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sun, 10 Aug 2014 23:35:11 +0700 Subject: [PATCH 060/272] usb: dbgp gadget: fix use after free in dbgp_unbind() After dbgp_bind()-dbgp_unbind() cycle happens, static variable dbgp contains pointers to already deallocated memory (dbgp.serial and dbgp.req). If the next dbgp_bind() fails, for example in usb_ep_alloc_request(), dbgp_bind() calls dbgp_unbind() on failure path, and dbgp_unbind() frees dbgp.serial that still stores a pointer to already deallocated memory. The patch sets pointers to NULL in dbgp_unbind(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/dbgp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c index 986fc511a2ed..225e385a6160 100644 --- a/drivers/usb/gadget/legacy/dbgp.c +++ b/drivers/usb/gadget/legacy/dbgp.c @@ -222,10 +222,12 @@ static void dbgp_unbind(struct usb_gadget *gadget) { #ifdef CONFIG_USB_G_DBGP_SERIAL kfree(dbgp.serial); + dbgp.serial = NULL; #endif if (dbgp.req) { kfree(dbgp.req->buf); usb_ep_free_request(gadget->ep0, dbgp.req); + dbgp.req = NULL; } gadget->ep0->driver_data = NULL; From bbc66e140babbc7026fa07478b588f2b56f99751 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 8 Aug 2014 16:27:15 +0900 Subject: [PATCH 061/272] usb: phy: samsung: Fix wrong bit mask for PHYPARAM1_PCS_TXDEEMPH According to the datasheet, PHYPARAM1_PCS_TXDEEMPH is set as 6 bits [5:0]. Thus, the bit mask should be set as 0x3f, instead of 0x1f. Signed-off-by: Jingoo Han Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-samsung-usb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/phy-samsung-usb.h b/drivers/usb/phy/phy-samsung-usb.h index 68771bfd1825..80eedd45a20a 100644 --- a/drivers/usb/phy/phy-samsung-usb.h +++ b/drivers/usb/phy/phy-samsung-usb.h @@ -216,7 +216,7 @@ #define EXYNOS5_DRD_PHYPARAM1 (0x20) -#define PHYPARAM1_PCS_TXDEEMPH_MASK (0x1f << 0) +#define PHYPARAM1_PCS_TXDEEMPH_MASK (0x3f << 0) #define PHYPARAM1_PCS_TXDEEMPH (0x1c) #define EXYNOS5_DRD_PHYTERM (0x24) From 20e7d4653d2b580e490dfbb1dfd138cd9844319c Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 7 Aug 2014 22:57:47 +0200 Subject: [PATCH 062/272] usb: gadget: fix error return code Convert a zero return value on error to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // Reviewed-by: Jeff Moyer Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/fusb300_udc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/fusb300_udc.c b/drivers/usb/gadget/udc/fusb300_udc.c index d40255f784df..5c5d1adda7eb 100644 --- a/drivers/usb/gadget/udc/fusb300_udc.c +++ b/drivers/usb/gadget/udc/fusb300_udc.c @@ -1398,13 +1398,17 @@ static int fusb300_probe(struct platform_device *pdev) /* initialize udc */ fusb300 = kzalloc(sizeof(struct fusb300), GFP_KERNEL); - if (fusb300 == NULL) + if (fusb300 == NULL) { + ret = -ENOMEM; goto clean_up; + } for (i = 0; i < FUSB300_MAX_NUM_EP; i++) { _ep[i] = kzalloc(sizeof(struct fusb300_ep), GFP_KERNEL); - if (_ep[i] == NULL) + if (_ep[i] == NULL) { + ret = -ENOMEM; goto clean_up; + } fusb300->ep[i] = _ep[i]; } From bcabdc24dff2d65dcc5bec093f30302283e5fdf4 Mon Sep 17 00:00:00 2001 From: Bo Shen Date: Thu, 7 Aug 2014 11:43:07 +0800 Subject: [PATCH 063/272] usb: atmel_usba_udc: fix it to deal with final dma channel As, the interrupt for DMA is counted from 1, so need to checked the USBA_NR_DMAS, in old way, it only check (USBA_NR_DMAS - 1), so fix it. Reported-by: Max Liao Signed-off-by: Bo Shen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 906e65f0e4fa..c9fe67e29d35 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1661,7 +1661,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (dma_status) { int i; - for (i = 1; i < USBA_NR_DMAS; i++) + for (i = 1; i <= USBA_NR_DMAS; i++) if (dma_status & (1 << i)) usba_dma_irq(udc, &udc->usba_ep[i]); } From 50f9f7983773b92af10d8c4d3175a2692559c493 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Tue, 5 Aug 2014 21:43:55 -0700 Subject: [PATCH 064/272] usb: musb: ux500: fix decimal printf format specifiers prefixed with 0x The prefix suggests the number should be printed in hex, so use the %x specifier to do that. Found by using regex suggested by Joe Perches. Signed-off-by: Hans Wennborg Signed-off-by: Felipe Balbi --- drivers/usb/musb/ux500_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 9aad00f11bd5..221faed9f074 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -96,7 +96,7 @@ static bool ux500_configure_channel(struct dma_channel *channel, struct musb *musb = ux500_channel->controller->private_data; dev_dbg(musb->controller, - "packet_sz=%d, mode=%d, dma_addr=0x%llu, len=%d is_tx=%d\n", + "packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d\n", packet_sz, mode, (unsigned long long) dma_addr, len, ux500_channel->is_tx); From 788b0bc46558d06f923afae59f881356ac382381 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 31 Jul 2014 18:30:51 +0300 Subject: [PATCH 065/272] usb: dwc3: omap: signedness bug in dwc3_omap_set_utmi_mode() "ret" should be signed. It's only used for zero and negative error codes. Signed-off-by: Dan Carpenter Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index ef4936ff626c..9dcfbe7cd5f5 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -425,7 +425,7 @@ static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) static int dwc3_omap_extcon_register(struct dwc3_omap *omap) { - u32 ret; + int ret; struct device_node *node = omap->dev->of_node; struct extcon_dev *edev; From 7042e8f2f6f5c76b6173748570312bbeb044c7dd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 20 Jul 2014 11:42:07 +0800 Subject: [PATCH 066/272] usb: gadget: Fix return value check in ep_write() In case of error, the function memdup_user() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 2e4ce7704908..e96077b8bf79 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -440,7 +440,7 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) value = -ENOMEM; kbuf = memdup_user(buf, len); - if (!kbuf) { + if (IS_ERR(kbuf)) { value = PTR_ERR(kbuf); goto free1; } From 4b11f88821aff3e780cb3eac3a48270551e41167 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 20 Jul 2014 11:41:53 +0800 Subject: [PATCH 067/272] usb: gadget: Fix return value check in r8a66597_probe() In case of error, the function devm_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Acked-by: Laurent Pinchart Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/r8a66597-udc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 46008421c1ec..de2a8713b428 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1868,8 +1868,8 @@ static int r8a66597_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); reg = devm_ioremap_resource(&pdev->dev, res); - if (!reg) - return -ENODEV; + if (IS_ERR(reg)) + return PTR_ERR(reg); ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); irq = ires->start; From 716d28e2e26d6640c4a516740b94a745f3f9ab33 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 20 Jul 2014 11:40:37 +0800 Subject: [PATCH 068/272] usb: phy: msm: Fix return value check in msm_otg_probe() In case of error, the function devm_ioremap_nocache() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-msm-usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index e4108eec5ef4..afc09087ec36 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -1601,8 +1601,8 @@ static int msm_otg_probe(struct platform_device *pdev) */ if (motg->phy_number) { phy_select = devm_ioremap_nocache(&pdev->dev, USB2_PHY_SEL, 4); - if (IS_ERR(phy_select)) - return PTR_ERR(phy_select); + if (!phy_select) + return -ENOMEM; /* Enable second PHY with the OTG port */ writel(0x1, phy_select); } From 7166c32d9a6b8655ce13b0844482526734ac41b3 Mon Sep 17 00:00:00 2001 From: Li RongQing Date: Fri, 25 Jul 2014 14:22:40 +0800 Subject: [PATCH 069/272] Revert "usb: gadget: u_ether: synchronize with transmit when stopping queue" This reverts commit a9232076374334ca2bc2a448dfde96d38a54349a. It introduced a dead lock, and did not fix anything. it made netif_tx_lock() be called in IRQ context, but in softirq context, the same lock is locked without disabling IRQ. In fact, the commit a923207637 did not fix anything, since netif_stop_queue did not free the any resource [ 10.154920] ================================= [ 10.156026] [ INFO: inconsistent lock state ] [ 10.156026] 3.16.0-rc5+ #13 Not tainted [ 10.156026] --------------------------------- [ 10.156026] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 10.156026] swapper/1/0 [HC0[0]:SC1[5]:HE1:SE0] takes: [ 10.156026] (_xmit_ETHER){?.-...}, at: [<80948b6a>] sch_direct_xmit+0x7a/0x250 [ 10.156026] {IN-HARDIRQ-W} state was registered at: [ 10.156026] [<804811f0>] __lock_acquire+0x800/0x17a0 [ 10.156026] [<804828ba>] lock_acquire+0x6a/0xf0 [ 10.156026] [<809ed477>] _raw_spin_lock+0x27/0x40 [ 10.156026] [<8088d508>] gether_disconnect+0x68/0x280 [ 10.156026] [<8088e777>] eem_set_alt+0x37/0xc0 [ 10.156026] [<808847ce>] composite_setup+0x30e/0x1240 [ 10.156026] [<8088b8ae>] pch_udc_isr+0xa6e/0xf50 [ 10.156026] [<8048abe8>] handle_irq_event_percpu+0x38/0x1e0 [ 10.156026] [<8048adc1>] handle_irq_event+0x31/0x50 [ 10.156026] [<8048d94b>] handle_fasteoi_irq+0x6b/0x140 [ 10.156026] [<804040a5>] handle_irq+0x65/0x80 [ 10.156026] [<80403cfc>] do_IRQ+0x3c/0xc0 [ 10.156026] [<809ee6ae>] common_interrupt+0x2e/0x34 [ 10.156026] [<804668c5>] finish_task_switch+0x65/0xd0 [ 10.156026] [<809e89df>] __schedule+0x20f/0x7d0 [ 10.156026] [<809e94aa>] schedule_preempt_disabled+0x2a/0x70 [ 10.156026] [<8047bf03>] cpu_startup_entry+0x143/0x410 [ 10.156026] [<809e2e61>] rest_init+0xa1/0xb0 [ 10.156026] [<80ce2a3b>] start_kernel+0x336/0x33b [ 10.156026] [<80ce22ab>] i386_start_kernel+0x79/0x7d [ 10.156026] irq event stamp: 52070 [ 10.156026] hardirqs last enabled at (52070): [<809375de>] neigh_resolve_output+0xee/0x2a0 [ 10.156026] hardirqs last disabled at (52069): [<809375a8>] neigh_resolve_output+0xb8/0x2a0 [ 10.156026] softirqs last enabled at (52020): [<8044401f>] _local_bh_enable+0x1f/0x50 [ 10.156026] softirqs last disabled at (52021): [<80404036>] do_softirq_own_stack+0x26/0x30 [ 10.156026] [ 10.156026] other info that might help us debug this: [ 10.156026] Possible unsafe locking scenario: [ 10.156026] [ 10.156026] CPU0 [ 10.156026] ---- [ 10.156026] lock(_xmit_ETHER); [ 10.156026] [ 10.156026] lock(_xmit_ETHER); [ 10.156026] [ 10.156026] *** DEADLOCK *** [ 10.156026] [ 10.156026] 4 locks held by swapper/1/0: [ 10.156026] #0: (((&idev->mc_ifc_timer))){+.-...}, at: [<8044b100>] call_timer_fn+0x0/0x190 [ 10.156026] #1: (rcu_read_lock){......}, at: [] mld_sendpack+0x0/0x590 [ipv6] [ 10.156026] #2: (rcu_read_lock_bh){......}, at: [] ip6_finish_output2+0x4c/0x7f0 [ipv6] [ 10.156026] #3: (rcu_read_lock_bh){......}, at: [<8092e510>] __dev_queue_xmit+0x0/0x5f0 [ 10.156026] [ 10.156026] stack backtrace: [ 10.156026] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.16.0-rc5+ #13 [ 10.156026] 811dbb10 00000000 9e919d10 809e6785 9e8b8000 9e919d3c 809e561e 80b95511 [ 10.156026] 80b9545a 80b9543d 80b95450 80b95441 80b957e4 9e8b84e0 00000002 8047f7b0 [ 10.156026] 9e919d5c 8048043b 00000002 00000000 9e8b8000 00000001 00000004 9e8b8000 [ 10.156026] Call Trace: [ 10.156026] [<809e6785>] dump_stack+0x48/0x69 [ 10.156026] [<809e561e>] print_usage_bug+0x18f/0x19c [ 10.156026] [<8047f7b0>] ? print_shortest_lock_dependencies+0x170/0x170 [ 10.156026] [<8048043b>] mark_lock+0x53b/0x5f0 [ 10.156026] [<804810cf>] __lock_acquire+0x6df/0x17a0 [ 10.156026] [<804828ba>] lock_acquire+0x6a/0xf0 [ 10.156026] [<80948b6a>] ? sch_direct_xmit+0x7a/0x250 [ 10.156026] [<809ed477>] _raw_spin_lock+0x27/0x40 [ 10.156026] [<80948b6a>] ? sch_direct_xmit+0x7a/0x250 [ 10.156026] [<80948b6a>] sch_direct_xmit+0x7a/0x250 [ 10.156026] [<8092e6bf>] __dev_queue_xmit+0x1af/0x5f0 [ 10.156026] [<80947fc0>] ? ether_setup+0x80/0x80 [ 10.156026] [<8092eb0f>] dev_queue_xmit+0xf/0x20 [ 10.156026] [<8093764c>] neigh_resolve_output+0x15c/0x2a0 [ 10.156026] [] ip6_finish_output2+0x167/0x7f0 [ipv6] [ 10.156026] [] ip6_finish_output+0x85/0x1c0 [ipv6] [ 10.156026] [] ip6_output+0x77/0x240 [ipv6] [ 10.156026] [] mld_sendpack+0x523/0x590 [ipv6] [ 10.156026] [<80480501>] ? mark_held_locks+0x11/0x90 [ 10.156026] [] mld_ifc_timer_expire+0x15d/0x280 [ipv6] [ 10.156026] [<8044b168>] call_timer_fn+0x68/0x190 [ 10.156026] [] ? igmp6_group_added+0x150/0x150 [ipv6] [ 10.156026] [<8044b3fa>] run_timer_softirq+0x16a/0x240 [ 10.156026] [] ? igmp6_group_added+0x150/0x150 [ipv6] [ 10.156026] [<80444984>] __do_softirq+0xd4/0x2f0 [ 10.156026] [<804448b0>] ? tasklet_action+0x100/0x100 [ 10.156026] [<80404036>] do_softirq_own_stack+0x26/0x30 [ 10.156026] [<80444d05>] irq_exit+0x65/0x70 [ 10.156026] [<8042d758>] smp_apic_timer_interrupt+0x38/0x50 [ 10.156026] [<809ee91f>] apic_timer_interrupt+0x2f/0x34 [ 10.156026] [<8048007b>] ? mark_lock+0x17b/0x5f0 [ 10.156026] [<8040a912>] ? default_idle+0x22/0xf0 [ 10.156026] [<8040b13e>] arch_cpu_idle+0xe/0x10 [ 10.156026] [<8047bfc6>] cpu_startup_entry+0x206/0x410 [ 10.156026] [<8042bfbd>] start_secondary+0x19d/0x1e0 Acked-by: Tony Lindgren Reported-by: Thomas Gleixner Cc: Jeff Westfahl Cc: Greg Kroah-Hartman Cc: Signed-off-by: Li RongQing Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_ether.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index d50adda913cf..6e6f87656e7b 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -1127,10 +1127,7 @@ void gether_disconnect(struct gether *link) DBG(dev, "%s\n", __func__); - netif_tx_lock(dev->net); netif_stop_queue(dev->net); - netif_tx_unlock(dev->net); - netif_carrier_off(dev->net); /* disable endpoints, forcing (synchronous) completion From 7a5c3c9be1059feed0e470c6dc0994dcaed4f12c Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Tue, 17 Jun 2014 18:58:59 +0800 Subject: [PATCH 070/272] Btrfs: fix put dio bio twice when we submit dio bio fail The caller of btrfs_submit_direct_hook() will put the original dio bio when btrfs_submit_direct_hook() return a error number, so we needn't put the original bio in btrfs_submit_direct_hook(). Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 73098328d040..33c05188cbf0 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7306,10 +7306,8 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); - if (ret) { - bio_put(orig_bio); + if (ret) return -EIO; - } if (map_length >= orig_bio->bi_iter.bi_size) { bio = orig_bio; @@ -7326,6 +7324,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS); if (!bio) return -ENOMEM; + bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; atomic_inc(&dip->pending_bios); From 1707e26d6ab05c477a91d260e31fda7c6c38588e Mon Sep 17 00:00:00 2001 From: chandan Date: Tue, 1 Jul 2014 12:04:28 +0530 Subject: [PATCH 071/272] Btrfs: fill_holes: Fix slot number passed to hole_mergeable() call. For a non-existent key, btrfs_search_slot() sets path->slots[0] to the slot where the key could have been present, which in this case would be the slot containing the extent item which would be the next neighbor of the file range being punched. The current code passes an incremented path->slots[0] and we skip to the wrong file extent item. This would mean that we would fail to merge the "yet to be created" hole with the next neighboring hole (if one exists). Fix this. Signed-off-by: Chandan Rajendra Reviewed-by: Wang Shilong Signed-off-by: Chris Mason --- fs/btrfs/file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index d3afac292d67..77e33534c7d6 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2088,10 +2088,9 @@ static int fill_holes(struct btrfs_trans_handle *trans, struct inode *inode, goto out; } - if (hole_mergeable(inode, leaf, path->slots[0]+1, offset, end)) { + if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) { u64 num_bytes; - path->slots[0]++; key.offset = offset; btrfs_set_item_key_safe(root, path, &key); fi = btrfs_item_ptr(leaf, path->slots[0], From b96de000bc8bc9688b3a2abea4332bd57648a49f Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Thu, 3 Jul 2014 18:22:05 +0800 Subject: [PATCH 072/272] Btrfs: device_list_add() should not update list when mounted device_list_add() is called when user runs btrfs dev scan, which would add any btrfs device into the btrfs_fs_devices list. Now think of a mounted btrfs. And a new device which contains the a SB from the mounted btrfs devices. In this situation when user runs btrfs dev scan, the current code would just replace existing device with the new device. Which is to note that old device is neither closed nor gracefully removed from the btrfs. The FS is still operational with the old bdev however the device name is the btrfs_device is new which is provided by the btrfs dev scan. reproducer: devmgt[1] detach /dev/sdc replace the missing disk /dev/sdc btrfs rep start -f 1 /dev/sde /btrfs Label: none uuid: 5dc0aaf4-4683-4050-b2d6-5ebe5f5cd120 Total devices 2 FS bytes used 32.00KiB devid 1 size 958.94MiB used 115.88MiB path /dev/sde devid 2 size 958.94MiB used 103.88MiB path /dev/sdd make /dev/sdc to reappear devmgt attach host2 btrfs dev scan btrfs fi show -m Label: none uuid: 5dc0aaf4-4683-4050-b2d6-5ebe5f5cd120^M Total devices 2 FS bytes used 32.00KiB^M devid 1 size 958.94MiB used 115.88MiB path /dev/sdc <- Wrong. devid 2 size 958.94MiB used 103.88MiB path /dev/sdd since /dev/sdc has been replaced with /dev/sde, the /dev/sdc shouldn't be part of the btrfs-fsid when it reappears. If user want it to be part of it then sys admin should be using btrfs device add instead. [1] github.com/anajain/devmgt.git Signed-off-by: Anand Jain Signed-off-by: Wang Shilong Signed-off-by: Miao Xie Reviewed-by: Satoru Takeuchi Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6cb82f62cb7c..7c538f65214b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -508,6 +508,33 @@ static noinline int device_list_add(const char *path, ret = 1; device->fs_devices = fs_devices; } else if (!device->name || strcmp(device->name->str, path)) { + /* + * When FS is already mounted. + * 1. If you are here and if the device->name is NULL that + * means this device was missing at time of FS mount. + * 2. If you are here and if the device->name is different + * from 'path' that means either + * a. The same device disappeared and reappeared with + * different name. or + * b. The missing-disk-which-was-replaced, has + * reappeared now. + * + * We must allow 1 and 2a above. But 2b would be a spurious + * and unintentional. + * + * Further in case of 1 and 2a above, the disk at 'path' + * would have missed some transaction when it was away and + * in case of 2a the stale bdev has to be updated as well. + * 2b must not be allowed at all time. + */ + + /* + * As of now don't allow update to btrfs_fs_device through + * the btrfs dev scan cli, after FS has been mounted. + */ + if (fs_devices->opened) + return -EBUSY; + name = rcu_string_strdup(path, GFP_NOFS); if (!name) return -ENOMEM; From 77bdae4d136e167bab028cbec58b988f91cf73c0 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Thu, 3 Jul 2014 18:22:06 +0800 Subject: [PATCH 073/272] btrfs: check generation as replace duplicates devid+uuid When FS in unmounted we need to check generation number as well since devid+uuid combination could match with the missing replaced disk when it reappears, and without this patch it might pair with the replaced disk again. device_list_add() function is called in the following threads, mount device option mount argument ioctl BTRFS_IOC_SCAN_DEV (btrfs dev scan) ioctl BTRFS_IOC_DEVICES_READY (btrfs dev ready ) they have been unit tested to work fine with this patch. If the user knows what he is doing and really want to pair with replaced disk (which is not a standard operation), then he should first clear the kernel btrfs device list in the memory by doing the module unload/load and followed with the mount -o device option. Signed-off-by: Anand Jain Signed-off-by: Wang Shilong Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 7c538f65214b..5700ab03e84b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -532,8 +532,19 @@ static noinline int device_list_add(const char *path, * As of now don't allow update to btrfs_fs_device through * the btrfs dev scan cli, after FS has been mounted. */ - if (fs_devices->opened) + if (fs_devices->opened) { return -EBUSY; + } else { + /* + * That is if the FS is _not_ mounted and if you + * are here, that means there is more than one + * disk with same uuid and devid.We keep the one + * with larger generation number or the last-in if + * generation are equal. + */ + if (found_transid < device->generation) + return -EEXIST; + } name = rcu_string_strdup(path, GFP_NOFS); if (!name) @@ -546,6 +557,15 @@ static noinline int device_list_add(const char *path, } } + /* + * Unmount does not free the btrfs_device struct but would zero + * generation along with most of the other members. So just update + * it back. We need it to pick the disk with largest generation + * (as above). + */ + if (!fs_devices->opened) + device->generation = found_transid; + if (found_transid > fs_devices->latest_trans) { fs_devices->latest_devid = devid; fs_devices->latest_trans = found_transid; From 69611ac810af8e88eeb5ebd851589a0e8cc90860 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 3 Jul 2014 18:22:12 +0800 Subject: [PATCH 074/272] Btrfs: fix unzeroed members in fs_devices when creating a fs from seed fs We forgot to zero some members in fs_devices when we create new fs_devices from the one of the seed fs. It would cause the problem that we got wrong chunk profile when allocating chunks. Fix it. Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 5700ab03e84b..50edbbc2e76c 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1988,6 +1988,9 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) fs_devices->seeding = 0; fs_devices->num_devices = 0; fs_devices->open_devices = 0; + fs_devices->missing_devices = 0; + fs_devices->num_can_discard = 0; + fs_devices->rotating = 0; fs_devices->seed = seed_devices; generate_random_uuid(fs_devices->fsid); From 3a7d55c84c76a3088ddfb798c187182143683a16 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Wed, 16 Jul 2014 18:38:01 +0800 Subject: [PATCH 075/272] Btrfs: fix wrong missing device counter decrease The missing devices are accounted by its own fs device, for example the missing devices in seed filesystem will be accounted by the fs device of the seed filesystem, not by the new filesystem which is based on the seed filesystem, so when we remove the missing device in the seed filesystem, we should decrease the counter of its own fs device. Fix it. Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 50edbbc2e76c..da0e632a21fc 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1718,7 +1718,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) device->fs_devices->total_devices--; if (device->missing) - root->fs_info->fs_devices->missing_devices--; + device->fs_devices->missing_devices--; next_device = list_entry(root->fs_info->fs_devices->devices.next, struct btrfs_device, dev_list); From 9a025a0860ccc0f02af153c966bc1f83e5d9fc62 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Thu, 17 Jul 2014 11:44:13 +0800 Subject: [PATCH 076/272] Btrfs: fix wrong write range for filemap_fdatawrite_range() filemap_fdatawrite_range() expect the third arg to be @end not @len, fix it. Signed-off-by: Wang Shilong Reviewed-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 33c05188cbf0..73fadc7ead0e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7533,7 +7533,8 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, count = iov_iter_count(iter); if (test_bit(BTRFS_INODE_HAS_ASYNC_EXTENT, &BTRFS_I(inode)->runtime_flags)) - filemap_fdatawrite_range(inode->i_mapping, offset, count); + filemap_fdatawrite_range(inode->i_mapping, offset, + offset + count - 1); if (rw & WRITE) { /* From e2eca69dc6c09d968d69312b9899968a9b03a4a9 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Thu, 17 Jul 2014 11:44:14 +0800 Subject: [PATCH 077/272] Btrfs: fix wrong extent mapping for DirectIO btrfs_next_leaf() will use current leaf's last key to search and then return a bigger one. So it may still return a file extent item that is smaller than expected value and we will get an overflow here for @em->len. This is easy to reproduce for Btrfs Direct writting, it did not cause any problem, because writting will re-insert right mapping later. However, by hacking code to make DIO support compression, wrong extent mapping is kept and it encounter merging failure(EEXIST) quickly. Fix this problem by looping to find next file extent item that is bigger than @start or we could not find anything more. Signed-off-by: Wang Shilong Reviewed-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 73fadc7ead0e..a3c6e76f5a4e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -6275,6 +6275,8 @@ next: goto not_found; if (start + len <= found_key.offset) goto not_found; + if (start > found_key.offset) + goto next; em->start = start; em->orig_start = start; em->len = found_key.offset - start; From 2c91943b5066314a8bb9f0a65584e5e4cd92ea63 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Fri, 18 Jul 2014 09:55:43 +0800 Subject: [PATCH 078/272] btrfs: Return right extent when fiemap gives unaligned offset and len. When page aligned start and len passed to extent_fiemap(), the result is good, but when start and len is not aligned, e.g. start = 1 and len = 4095 is passed to extent_fiemap(), it returns no extent. The problem is that start and len is all rounded down which causes the problem. This patch will round down start and round up (start + len) to return right extent. Reported-by: Chandan Rajendra Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/extent_io.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a389820d158b..1c70cff4a9e1 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4213,8 +4213,8 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, return -ENOMEM; path->leave_spinning = 1; - start = ALIGN(start, BTRFS_I(inode)->root->sectorsize); - len = ALIGN(len, BTRFS_I(inode)->root->sectorsize); + start = round_down(start, BTRFS_I(inode)->root->sectorsize); + len = round_up(max, BTRFS_I(inode)->root->sectorsize) - start; /* * lookup the last file extent. We're not using i_size here From ff61d17c6324d1b483fbbc5144f09668c24ff60c Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 24 Jul 2014 11:37:06 +0800 Subject: [PATCH 079/272] Btrfs: Fix the problem that the replace destroys the seed filesystem The seed filesystem was destroyed by the device replace, the reproduce method is: # mkfs.btrfs -f # btrfstune -S 1 # mount # btrfs device add # umount # mount # btrfs replace start -f # umount # mount It is because we erase the super block on the seed device. It is wrong, we should not change anything on the seed device. Signed-off-by: Miao Xie Reviewed-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index da0e632a21fc..00c8efdcd1e5 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1848,8 +1848,12 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info, if (srcdev->bdev) { fs_info->fs_devices->open_devices--; - /* zero out the old super */ - btrfs_scratch_superblock(srcdev); + /* + * zero out the old super if it is not writable + * (e.g. seed device) + */ + if (srcdev->writeable) + btrfs_scratch_superblock(srcdev); } call_rcu(&srcdev->rcu, free_device); From 5d68da3b8ee6eb2257aa4b8d885581782278ae93 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 24 Jul 2014 11:37:07 +0800 Subject: [PATCH 080/272] Btrfs: don't write any data into a readonly device when scrub We should not write data into a readonly device especially seed device when doing scrub, skip those devices. Signed-off-by: Miao Xie Reviewed-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/scrub.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index b6d198f5181e..23d3f6e6a482 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -2904,6 +2904,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, struct scrub_ctx *sctx; int ret; struct btrfs_device *dev; + struct rcu_string *name; if (btrfs_fs_closing(fs_info)) return -EINVAL; @@ -2965,6 +2966,16 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, return -ENODEV; } + if (!is_dev_replace && !readonly && !dev->writeable) { + mutex_unlock(&fs_info->fs_devices->device_list_mutex); + rcu_read_lock(); + name = rcu_dereference(dev->name); + btrfs_err(fs_info, "scrub: device %s is not writable", + name->str); + rcu_read_unlock(); + return -EROFS; + } + mutex_lock(&fs_info->scrub_lock); if (!dev->in_fs_metadata || dev->is_tgtdev_for_dev_replace) { mutex_unlock(&fs_info->scrub_lock); From 7df69d3e94d6de537fd1afb574c760d8dc83ab60 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 24 Jul 2014 11:37:13 +0800 Subject: [PATCH 081/272] Btrfs: Fix wrong device size when we are resizing the device total_bytes of device is just a in-memory variant which is used to record the size of the device, and it might be changed before we resize a device, if the resize operation fails, it will be fallbacked. But some code used it to update on-disk metadata of the device, it would cause the problem that on-disk metadata of the devices was not consistent. We should use the other variant named disk_total_bytes to update the on-disk metadata of device, because that variant is updated only when the resize operation is successful. Fix it. Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/disk-io.c | 3 ++- fs/btrfs/volumes.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index d0ed9e664f7d..c99a414813c1 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3450,7 +3450,8 @@ static int write_all_supers(struct btrfs_root *root, int max_mirrors) btrfs_set_stack_device_generation(dev_item, 0); btrfs_set_stack_device_type(dev_item, dev->type); btrfs_set_stack_device_id(dev_item, dev->devid); - btrfs_set_stack_device_total_bytes(dev_item, dev->total_bytes); + btrfs_set_stack_device_total_bytes(dev_item, + dev->disk_total_bytes); btrfs_set_stack_device_bytes_used(dev_item, dev->bytes_used); btrfs_set_stack_device_io_align(dev_item, dev->io_align); btrfs_set_stack_device_io_width(dev_item, dev->io_width); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 00c8efdcd1e5..9d4ce53d7569 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1483,7 +1483,7 @@ static int btrfs_add_device(struct btrfs_trans_handle *trans, btrfs_set_device_io_align(leaf, dev_item, device->io_align); btrfs_set_device_io_width(leaf, dev_item, device->io_width); btrfs_set_device_sector_size(leaf, dev_item, device->sector_size); - btrfs_set_device_total_bytes(leaf, dev_item, device->total_bytes); + btrfs_set_device_total_bytes(leaf, dev_item, device->disk_total_bytes); btrfs_set_device_bytes_used(leaf, dev_item, device->bytes_used); btrfs_set_device_group(leaf, dev_item, 0); btrfs_set_device_seek_speed(leaf, dev_item, 0); From 95669976bd7d30ae265db938ecb46a6b7f8cb893 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 24 Jul 2014 11:37:14 +0800 Subject: [PATCH 082/272] Btrfs: don't consider the missing device when allocating new chunks The original code allocated new chunks by the number of the writable devices and missing devices to make sure that any RAID levels on a degraded FS continue to be honored, but it introduced a problem that it stopped us to allocating new chunks, the steps to reproduce is following: # mkfs.btrfs -m raid1 -d raid1 -f # mkfs.btrfs -f //Removing from the original fs # mount -o degraded # dd if=/dev/null of=/tmpfile bs=1M It is because we allocate new chunks only on the writable devices, if we take the number of missing devices into account, and want to allocate new chunks with higher RAID level, we will fail becaue we don't have enough writable device. Fix it by ignoring the number of missing devices when allocating new chunks. Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 102ed3143976..5524434da059 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3586,13 +3586,7 @@ static u64 get_restripe_target(struct btrfs_fs_info *fs_info, u64 flags) */ static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) { - /* - * we add in the count of missing devices because we want - * to make sure that any RAID levels on a degraded FS - * continue to be honored. - */ - u64 num_devices = root->fs_info->fs_devices->rw_devices + - root->fs_info->fs_devices->missing_devices; + u64 num_devices = root->fs_info->fs_devices->rw_devices; u64 target; u64 tmp; @@ -8440,13 +8434,7 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags) if (stripped) return extended_to_chunk(stripped); - /* - * we add in the count of missing devices because we want - * to make sure that any RAID levels on a degraded FS - * continue to be honored. - */ - num_devices = root->fs_info->fs_devices->rw_devices + - root->fs_info->fs_devices->missing_devices; + num_devices = root->fs_info->fs_devices->rw_devices; stripped = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6 | From dd5f5006d1035547559c8a90781a7e249787a7a2 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 19 Aug 2014 17:37:55 +0200 Subject: [PATCH 083/272] usbcore: Fix wrong device in an error message in hub_port_connect() The commit [5ee0f803cc3a: usbcore: don't log on consecutive debounce failures of the same port] added the check of the reliable port, but it also replaced the device argument to dev_err() wrongly, which leads to a NULL dereference. This patch restores the right device, port_dev->dev. Also, since dev_err() itself shows the port number, reduce the port number shown in the error message, essentially reverting to the state before the commit 5ee0f803cc3a. [The fix suggested by Hannes, and the error message cleanup suggested by Alan Stern] Fixes: 5ee0f803cc3a ('usbcore: don't log on consecutive debounce failures of the same port') Reported-by: Hannes Reinecke Cc: Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 8a4dcbc7a75f..e0eaeb8697bb 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4631,9 +4631,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus, if (status != -ENODEV && port1 != unreliable_port && printk_ratelimit()) - dev_err(&udev->dev, "connect-debounce failed, port %d disabled\n", - port1); - + dev_err(&port_dev->dev, "connect-debounce failed\n"); portstatus &= ~USB_PORT_STAT_CONNECTION; unreliable_port = port1; } else { From 9a54886342e227433aebc9d374f8ae268a836475 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 19 Aug 2014 15:17:56 +0300 Subject: [PATCH 084/272] xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL When using a Renesas uPD720231 chipset usb-3 uas to sata bridge with a 120G Crucial M500 ssd, model string: Crucial_ CT120M500SSD1, together with a the integrated Intel xhci controller on a Haswell laptop: 00:14.0 USB controller [0c03]: Intel Corporation 8 Series USB xHCI HC [8086:9c31] (rev 04) The following error gets logged to dmesg: xhci error: Transfer event TRB DMA ptr not part of current TD Treating COMP_STOP the same as COMP_STOP_INVAL when no event_seg gets found fixes this. Signed-off-by: Hans de Goede Signed-off-by: Mathias Nyman Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 60fb52ae864b..ac8cf2374046 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2487,7 +2487,8 @@ static int handle_tx_event(struct xhci_hcd *xhci, * last TRB of the previous TD. The command completion handle * will take care the rest. */ - if (!event_seg && trb_comp_code == COMP_STOP_INVAL) { + if (!event_seg && (trb_comp_code == COMP_STOP || + trb_comp_code == COMP_STOP_INVAL)) { ret = 0; goto cleanup; } From 2597fe99bb0259387111d0431691f5daac84f5a5 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Tue, 19 Aug 2014 15:17:57 +0300 Subject: [PATCH 085/272] usb: xhci: amd chipset also needs short TX quirk AMD xHC also needs short tx quirk after tested on most of chipset generations. That's because there is the same incorrect behavior like Fresco Logic host. Please see below message with on USB webcam attached on xHC host: [ 139.262944] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.266934] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.270913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.274937] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.278914] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.282936] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.286915] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.290938] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.294913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [ 139.298917] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? Reported-by: Arindam Nath Tested-by: Shriraj-Rai P Cc: Signed-off-by: Huang Rui Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 687d36608155..95d0a6d984f1 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -101,6 +101,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) /* AMD PLL quirk */ if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info()) xhci->quirks |= XHCI_AMD_PLL_FIX; + + if (pdev->vendor == PCI_VENDOR_ID_AMD) + xhci->quirks |= XHCI_TRUST_TX_LENGTH; + if (pdev->vendor == PCI_VENDOR_ID_INTEL) { xhci->quirks |= XHCI_LPM_SUPPORT; xhci->quirks |= XHCI_INTEL_HOST; From 365038d83313951d6ace15342eb24624bbef1666 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 19 Aug 2014 15:17:58 +0300 Subject: [PATCH 086/272] xhci: rework cycle bit checking for new dequeue pointers When we manually need to move the TR dequeue pointer we need to set the correct cycle bit as well. Previously we used the trb pointer from the last event received as a base, but this was changed in commit 1f81b6d22a59 ("usb: xhci: Prefer endpoint context dequeue pointer") to use the dequeue pointer from the endpoint context instead It turns out some Asmedia controllers advance the dequeue pointer stored in the endpoint context past the event triggering TRB, and this messed up the way the cycle bit was calculated. Instead of adding a quirk or complicating the already hard to follow cycle bit code, the whole cycle bit calculation is now simplified and adapted to handle event and endpoint context dequeue pointer differences. Fixes: 1f81b6d22a59 ("usb: xhci: Prefer endpoint context dequeue pointer") Reported-by: Maciej Puzio Reported-by: Evan Langlois Reviewed-by: Julius Werner Tested-by: Maciej Puzio Tested-by: Evan Langlois Signed-off-by: Mathias Nyman Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 101 ++++++++++++++--------------------- drivers/usb/host/xhci.c | 3 ++ 2 files changed, 42 insertions(+), 62 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index ac8cf2374046..abed30b82905 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -364,32 +364,6 @@ static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, } } -/* - * Find the segment that trb is in. Start searching in start_seg. - * If we must move past a segment that has a link TRB with a toggle cycle state - * bit set, then we will toggle the value pointed at by cycle_state. - */ -static struct xhci_segment *find_trb_seg( - struct xhci_segment *start_seg, - union xhci_trb *trb, int *cycle_state) -{ - struct xhci_segment *cur_seg = start_seg; - struct xhci_generic_trb *generic_trb; - - while (cur_seg->trbs > trb || - &cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) { - generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic; - if (generic_trb->field[3] & cpu_to_le32(LINK_TOGGLE)) - *cycle_state ^= 0x1; - cur_seg = cur_seg->next; - if (cur_seg == start_seg) - /* Looped over the entire list. Oops! */ - return NULL; - } - return cur_seg; -} - - static struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, unsigned int stream_id) @@ -459,9 +433,12 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, struct xhci_virt_device *dev = xhci->devs[slot_id]; struct xhci_virt_ep *ep = &dev->eps[ep_index]; struct xhci_ring *ep_ring; - struct xhci_generic_trb *trb; + struct xhci_segment *new_seg; + union xhci_trb *new_deq; dma_addr_t addr; u64 hw_dequeue; + bool cycle_found = false; + bool td_last_trb_found = false; ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, ep_index, stream_id); @@ -486,45 +463,45 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, hw_dequeue = le64_to_cpu(ep_ctx->deq); } - /* Find virtual address and segment of hardware dequeue pointer */ - state->new_deq_seg = ep_ring->deq_seg; - state->new_deq_ptr = ep_ring->dequeue; - while (xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr) - != (dma_addr_t)(hw_dequeue & ~0xf)) { - next_trb(xhci, ep_ring, &state->new_deq_seg, - &state->new_deq_ptr); - if (state->new_deq_ptr == ep_ring->dequeue) { - WARN_ON(1); + new_seg = ep_ring->deq_seg; + new_deq = ep_ring->dequeue; + state->new_cycle_state = hw_dequeue & 0x1; + + /* + * We want to find the pointer, segment and cycle state of the new trb + * (the one after current TD's last_trb). We know the cycle state at + * hw_dequeue, so walk the ring until both hw_dequeue and last_trb are + * found. + */ + do { + if (!cycle_found && xhci_trb_virt_to_dma(new_seg, new_deq) + == (dma_addr_t)(hw_dequeue & ~0xf)) { + cycle_found = true; + if (td_last_trb_found) + break; + } + if (new_deq == cur_td->last_trb) + td_last_trb_found = true; + + if (cycle_found && + TRB_TYPE_LINK_LE32(new_deq->generic.field[3]) && + new_deq->generic.field[3] & cpu_to_le32(LINK_TOGGLE)) + state->new_cycle_state ^= 0x1; + + next_trb(xhci, ep_ring, &new_seg, &new_deq); + + /* Search wrapped around, bail out */ + if (new_deq == ep->ring->dequeue) { + xhci_err(xhci, "Error: Failed finding new dequeue state\n"); + state->new_deq_seg = NULL; + state->new_deq_ptr = NULL; return; } - } - /* - * Find cycle state for last_trb, starting at old cycle state of - * hw_dequeue. If there is only one segment ring, find_trb_seg() will - * return immediately and cannot toggle the cycle state if this search - * wraps around, so add one more toggle manually in that case. - */ - state->new_cycle_state = hw_dequeue & 0x1; - if (ep_ring->first_seg == ep_ring->first_seg->next && - cur_td->last_trb < state->new_deq_ptr) - state->new_cycle_state ^= 0x1; - state->new_deq_ptr = cur_td->last_trb; - xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "Finding segment containing last TRB in TD."); - state->new_deq_seg = find_trb_seg(state->new_deq_seg, - state->new_deq_ptr, &state->new_cycle_state); - if (!state->new_deq_seg) { - WARN_ON(1); - return; - } + } while (!cycle_found || !td_last_trb_found); - /* Increment to find next TRB after last_trb. Cycle if appropriate. */ - trb = &state->new_deq_ptr->generic; - if (TRB_TYPE_LINK_LE32(trb->field[3]) && - (trb->field[3] & cpu_to_le32(LINK_TOGGLE))) - state->new_cycle_state ^= 0x1; - next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr); + state->new_deq_seg = new_seg; + state->new_deq_ptr = new_deq; /* Don't update the ring cycle state for the producer (us). */ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index b6f21175b872..c020b094fe7d 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2880,6 +2880,9 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, ep_index, ep->stopped_stream, ep->stopped_td, &deq_state); + if (!deq_state.new_deq_ptr || !deq_state.new_deq_seg) + return; + /* HW with the reset endpoint quirk will use the saved dequeue state to * issue a configure endpoint command later. */ From 194f74ebc68f0655d40e9cb4e8a70ef8e8d4d261 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 19 Aug 2014 08:56:20 +0800 Subject: [PATCH 087/272] usb: dwc2: gadget: fix below build warning linux-2.6/drivers/usb/dwc2/gadget.c: In function 's3c_hsotg_irq_enumdone': linux-2.6/drivers/usb/dwc2/gadget.c:1904: warning: 'ep_mps' may be used uninitialized in this function Acked-by: Paul Zimmerman Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 0ba9c335b584..2a6f76b0075e 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1901,7 +1901,7 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) { u32 dsts = readl(hsotg->regs + DSTS); - int ep0_mps = 0, ep_mps; + int ep0_mps = 0, ep_mps = 1023; /* * This should signal the finish of the enumeration phase From 5b1dc209d68c5fd223b7bd865a5cabad043dbc07 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 19 Aug 2014 08:56:21 +0800 Subject: [PATCH 088/272] usb: core: fix below build warning linux-2.6/drivers/usb/core/hub.c: In function 'usb_disconnect': linux-2.6/drivers/usb/core/hub.c:2110: warning: 'hub' may be used uninitialized in this function linux-2.6/drivers/usb/core/hub.c:2111: warning: 'port1' may be used uninitialized in this function Signed-off-by: Peter Chen Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index e0eaeb8697bb..97deb8e6b594 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2107,8 +2107,8 @@ void usb_disconnect(struct usb_device **pdev) { struct usb_port *port_dev = NULL; struct usb_device *udev = *pdev; - struct usb_hub *hub; - int port1; + struct usb_hub *hub = NULL; + int port1 = 1; /* mark the device as inactive, so any further urb submissions for * this device (and any of its children) will fail immediately. From 6835a3a02b1ae222cbfb167a7e2d5e8df5e9854e Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 19 Aug 2014 08:56:22 +0800 Subject: [PATCH 089/272] usb: wusbcore: fix below build warning linux-2.6/drivers/usb/wusbcore/wa-xfer.c: In function 'wa_buf_in_cb': linux-2.6/drivers/usb/wusbcore/wa-xfer.c:2590: warning: 'rpipe' may be used uninitialized in this function Signed-off-by: Peter Chen Suggested-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-xfer.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 3e2e4ed20157..e279015be466 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -2602,6 +2602,7 @@ static void wa_buf_in_cb(struct urb *urb) dev = &wa->usb_iface->dev; --(wa->active_buf_in_urbs); active_buf_in_urbs = wa->active_buf_in_urbs; + rpipe = xfer->ep->hcpriv; if (usb_pipeisoc(xfer->urb->pipe)) { struct usb_iso_packet_descriptor *iso_frame_desc = @@ -2659,7 +2660,6 @@ static void wa_buf_in_cb(struct urb *urb) resubmit_dti = (isoc_data_frame_count == urb_frame_count); } else if (active_buf_in_urbs == 0) { - rpipe = xfer->ep->hcpriv; dev_dbg(dev, "xfer %p 0x%08X#%u: data in done (%zu bytes)\n", xfer, wa_xfer_id(xfer), seg->index, @@ -2685,7 +2685,6 @@ static void wa_buf_in_cb(struct urb *urb) */ resubmit_dti = wa->dti_state != WA_DTI_TRANSFER_RESULT_PENDING; spin_lock_irqsave(&xfer->lock, flags); - rpipe = xfer->ep->hcpriv; if (printk_ratelimit()) dev_err(dev, "xfer %p 0x%08X#%u: data in error %d\n", xfer, wa_xfer_id(xfer), seg->index, From bd52b813a999e44d2e35c2390d02fa4d0f61d08a Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Fri, 8 Aug 2014 17:38:57 +0200 Subject: [PATCH 090/272] usb: gadget: uvc: fix possible lockup in uvc gadget If the pending buffers in the queue could not be pushed to the udc endpoint we have to cancel the uvc_queue. Otherwise the gadget will get stuck on this error. This patch calls uvc_queue_cancel if usb_ep_queue failed. Acked-by: Laurent Pinchart Signed-off-by: Michael Grzeschik Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/uvc_video.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index 71e896d4c5ae..a5eb9a3fbb7a 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -195,6 +195,7 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req) printk(KERN_INFO "Failed to queue request (%d).\n", ret); usb_ep_set_halt(ep); spin_unlock_irqrestore(&video->queue.irqlock, flags); + uvc_queue_cancel(queue, 0); goto requeue; } spin_unlock_irqrestore(&video->queue.irqlock, flags); @@ -281,6 +282,7 @@ error: static int uvc_video_pump(struct uvc_video *video) { + struct uvc_video_queue *queue = &video->queue; struct usb_request *req; struct uvc_buffer *buf; unsigned long flags; @@ -322,6 +324,7 @@ uvc_video_pump(struct uvc_video *video) printk(KERN_INFO "Failed to queue request (%d)\n", ret); usb_ep_set_halt(video->ep); spin_unlock_irqrestore(&video->queue.irqlock, flags); + uvc_queue_cancel(queue, 0); break; } spin_unlock_irqrestore(&video->queue.irqlock, flags); From 61a2381c7b28255b1b76405827da47104a3913a0 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Tue, 19 Aug 2014 19:18:44 +0200 Subject: [PATCH 091/272] spi: spi-au1550: fix build failure Fix a build failure introduced with commit 30670539b86 (spi: au1550: Fix bug in deallocation of memory) Signed-off-by: Manuel Lauss Signed-off-by: Mark Brown --- drivers/spi/spi-au1550.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-au1550.c b/drivers/spi/spi-au1550.c index 40c3d43c9292..f40b34cdf2fc 100644 --- a/drivers/spi/spi-au1550.c +++ b/drivers/spi/spi-au1550.c @@ -945,7 +945,7 @@ static int au1550_spi_remove(struct platform_device *pdev) spi_bitbang_stop(&hw->bitbang); free_irq(hw->irq, hw); iounmap((void __iomem *)hw->regs); - release_mem_region(r->start, sizeof(psc_spi_t)); + release_mem_region(hw->ioarea->start, sizeof(psc_spi_t)); if (hw->usedma) { au1550_spi_dma_rxtmp_free(hw); From 937222c4dda495277a8dfbc18bf7e54fe670105c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Date: Wed, 20 Aug 2014 08:38:36 +0200 Subject: [PATCH 092/272] pwm-backlight: Fix bogus request for GPIO#0 when instantiated from DT MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 257462dbf3ed ("pwm-backlight: switch to gpiod interface") introduced a regression leading to acquiring a bogus GPIO-0 when configured from DT without an 'enable-gpios' property. The driver will happily accept the 0 initialized 'enable_gpio' member of the struct platform_pwm_backlight_data as valid gpio number, and request this GPIO as enable pin. In case of multiple driver instances, the second will fail to register with the error message: pwm-backlight backlight1.23: failed to request GPIO#0: -16 Fix this by setting enable_gpio in the pdata struct to -EINVAL. Signed-off-by: Lothar Waßmann Acked-by: Thierry Reding Signed-off-by: Lee Jones --- drivers/video/backlight/pwm_bl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index d7a3d13e72ec..b85983e97f0a 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -173,6 +173,7 @@ static int pwm_backlight_parse_dt(struct device *dev, data->max_brightness--; } + data->enable_gpio = -EINVAL; return 0; } From ddde06b1816e78c871512cc1f29a4944a4197b5e Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Sun, 3 Aug 2014 17:19:27 -0700 Subject: [PATCH 093/272] mfd: omap-usb-host: Fix %d confusingly prefixed with 0x in format string Signed-off-by: Hans Wennborg Signed-off-by: Lee Jones --- drivers/mfd/omap-usb-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 33a9234b701c..83dab2f0a50e 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -647,7 +647,7 @@ static int usbhs_omap_probe(struct platform_device *pdev) default: omap->nports = OMAP3_HS_USB_PORTS; dev_dbg(dev, - "USB HOST Rev:0x%d not recognized, assuming %d ports\n", + "USB HOST Rev:0x%x not recognized, assuming %d ports\n", omap->usbhs_rev, omap->nports); break; } From 6065c9a472cc1a3c66a0a6a2b1b4143558c1361e Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Sun, 3 Aug 2014 17:19:15 -0700 Subject: [PATCH 094/272] mfd: htc-i2cpld: Fix %d confusingly prefixed with 0x in format string Signed-off-by: Hans Wennborg Signed-off-by: Lee Jones --- drivers/mfd/htc-i2cpld.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/htc-i2cpld.c b/drivers/mfd/htc-i2cpld.c index b44f0203983b..6bdb78c2ac77 100644 --- a/drivers/mfd/htc-i2cpld.c +++ b/drivers/mfd/htc-i2cpld.c @@ -404,7 +404,7 @@ static int htcpld_register_chip_i2c( } i2c_set_clientdata(client, chip); - snprintf(client->name, I2C_NAME_SIZE, "Chip_0x%d", client->addr); + snprintf(client->name, I2C_NAME_SIZE, "Chip_0x%x", client->addr); chip->client = client; /* Reset the chip */ From 72ef8e4b3bff21e62bba82c40d7b412a305c3a78 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 29 Jul 2014 22:29:48 -0300 Subject: [PATCH 095/272] mfd: ab8500-core: Use 'ifdef' for config options The config symbol 'CONFIG_DEBUG_FS' should be protected by a 'ifdef' instead of a plain 'if'. Signed-off-by: Fabio Estevam Signed-off-by: Lee Jones --- drivers/mfd/ab8500-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index ce48aa72bb42..bde2fc072410 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -1754,7 +1754,7 @@ static int ab8500_probe(struct platform_device *pdev) if (ret) return ret; -#if CONFIG_DEBUG_FS +#ifdef CONFIG_DEBUG_FS /* Pass to debugfs */ ab8500_debug_resources[0].start = ab8500->irq; ab8500_debug_resources[0].end = ab8500->irq; From a68df7066a6f974db6069e0b93c498775660a114 Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Mon, 4 Aug 2014 10:22:54 -0700 Subject: [PATCH 096/272] usb: pch_udc: usb gadget device support for Intel Quark X1000 This patch is to enable the USB gadget device for Intel Quark X1000 Signed-off-by: Bryan O'Donoghue Signed-off-by: Bing Niu Signed-off-by: Alvin (Weike) Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/Kconfig | 3 ++- drivers/usb/gadget/udc/pch_udc.c | 22 +++++++++++++++++++--- 2 files changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index 5151f947a4f5..34ebaa68504c 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -332,7 +332,7 @@ config USB_GOKU gadget drivers to also be dynamically linked. config USB_EG20T - tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC" + tristate "Intel QUARK X1000/EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC" depends on PCI help This is a USB device driver for EG20T PCH. @@ -353,6 +353,7 @@ config USB_EG20T ML7213/ML7831 is companion chip for Intel Atom E6xx series. ML7213/ML7831 is completely compatible for Intel EG20T PCH. + This driver can be used with Intel's Quark X1000 SOC platform # # LAST -- dummy/emulated controller # diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index eb8c3bedb57a..460d953c91b6 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -343,6 +343,7 @@ struct pch_vbus_gpio_data { * @setup_data: Received setup data * @phys_addr: of device memory * @base_addr: for mapped device memory + * @bar: Indicates which PCI BAR for USB regs * @irq: IRQ line for the device * @cfg_data: current cfg, intf, and alt in use * @vbus_gpio: GPIO informaton for detecting VBUS @@ -370,14 +371,17 @@ struct pch_udc_dev { struct usb_ctrlrequest setup_data; unsigned long phys_addr; void __iomem *base_addr; + unsigned bar; unsigned irq; struct pch_udc_cfg_data cfg_data; struct pch_vbus_gpio_data vbus_gpio; }; #define to_pch_udc(g) (container_of((g), struct pch_udc_dev, gadget)) +#define PCH_UDC_PCI_BAR_QUARK_X1000 0 #define PCH_UDC_PCI_BAR 1 #define PCI_DEVICE_ID_INTEL_EG20T_UDC 0x8808 +#define PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC 0x0939 #define PCI_VENDOR_ID_ROHM 0x10DB #define PCI_DEVICE_ID_ML7213_IOH_UDC 0x801D #define PCI_DEVICE_ID_ML7831_IOH_UDC 0x8808 @@ -3076,7 +3080,7 @@ static void pch_udc_remove(struct pci_dev *pdev) iounmap(dev->base_addr); if (dev->mem_region) release_mem_region(dev->phys_addr, - pci_resource_len(pdev, PCH_UDC_PCI_BAR)); + pci_resource_len(pdev, dev->bar)); if (dev->active) pci_disable_device(pdev); kfree(dev); @@ -3144,9 +3148,15 @@ static int pch_udc_probe(struct pci_dev *pdev, dev->active = 1; pci_set_drvdata(pdev, dev); + /* Determine BAR based on PCI ID */ + if (id->device == PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC) + dev->bar = PCH_UDC_PCI_BAR_QUARK_X1000; + else + dev->bar = PCH_UDC_PCI_BAR; + /* PCI resource allocation */ - resource = pci_resource_start(pdev, 1); - len = pci_resource_len(pdev, 1); + resource = pci_resource_start(pdev, dev->bar); + len = pci_resource_len(pdev, dev->bar); if (!request_mem_region(resource, len, KBUILD_MODNAME)) { dev_err(&pdev->dev, "%s: pci device used already\n", __func__); @@ -3211,6 +3221,12 @@ finished: } static const struct pci_device_id pch_udc_pcidev_id[] = { + { + PCI_DEVICE(PCI_VENDOR_ID_INTEL, + PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC), + .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe, + .class_mask = 0xffffffff, + }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EG20T_UDC), .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe, From aca26364689e00e3b2052072424682231bdae6ae Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Wed, 20 Aug 2014 13:57:26 +0300 Subject: [PATCH 097/272] spi/pxa2xx: Add ACPI ID for Intel Braswell The SPI host controller is the same as used in Baytrail, only the ACPI ID is different so add this new ID to the list. Signed-off-by: Alan Cox Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-pxa2xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index fe792106bdc5..46f45ca2c694 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1074,6 +1074,7 @@ static struct acpi_device_id pxa2xx_spi_acpi_match[] = { { "INT3430", 0 }, { "INT3431", 0 }, { "80860F0E", 0 }, + { "8086228E", 0 }, { }, }; MODULE_DEVICE_TABLE(acpi, pxa2xx_spi_acpi_match); From 0ac7a4904ae1a73ae4c2c18ff6a5dd2b7e03254c Mon Sep 17 00:00:00 2001 From: Addy Ke Date: Wed, 20 Aug 2014 11:47:42 +0800 Subject: [PATCH 098/272] spi/rockchip: fixup incorrect dma direction setting Signed-off-by: Addy Ke Signed-off-by: Mark Brown --- drivers/spi/spi-rockchip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index c0743604b906..6321326eb751 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -678,7 +678,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) rs->dma_tx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_TXDR); rs->dma_rx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_RXDR); rs->dma_tx.direction = DMA_MEM_TO_DEV; - rs->dma_tx.direction = DMA_DEV_TO_MEM; + rs->dma_rx.direction = DMA_DEV_TO_MEM; master->can_dma = rockchip_spi_can_dma; master->dma_tx = rs->dma_tx.ch; From 5d19703822da2a8e9161302aa918c8e45a4c5eee Mon Sep 17 00:00:00 2001 From: Philippe Reynes Date: Mon, 18 Aug 2014 00:08:07 +0200 Subject: [PATCH 099/272] usb: gadget: remove $(PWD) in ccflags-y The variable $(PWD) is useless, and it may break the compilation. For example, it breaks the kernel compilation when it's done with buildroot : /home/trem/Codes/armadeus/armadeus/buildroot/output/host/usr/bin/ccache /home/trem/Codes/armadeus/armadeus/buildroot/output/host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gcc -Wp,-MD,drivers/usb/gadget/legacy/.hid.o.d -nostdinc -isystem /home/trem/Codes/armadeus/armadeus/buildroot/output/host/usr/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.7.3/include -I./arch/arm/include -Iarch/arm/include/generated -Iinclude -I./arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-dwarf2-cfi-asm -mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp -funwind-tables -marm -D__LINUX_ARM_ARCH__=5 -march=armv5te -mtune=arm9tdmi -msoft-float -Uarm -fno-delete-null-pointer-checks -O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fomit-frame-pointer -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -DCC_HAVE_ASM_GOTO -I/home/trem/Codes/armadeus/armadeus/buildroot/drivers/usb/gadget/ -I/home/trem/Codes/armadeus/armadeus/buildroot/drivers/usb/gadget/udc/ -I/home/trem/Codes/armadeus/armadeus/buildroot/drivers/usb/gadget/function/ -DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(hid)" -D"KBUILD_MODNAME=KBUILD_STR(g_hid)" -c -o drivers/usb/gadget/legacy/hid.o drivers/usb/gadget/legacy/hid.c drivers/usb/gadget/epautoconf.c:23:26: erreur fatale: gadget_chips.h : Aucun fichier ou dossier de ce type This compilation line include : ..../buildroot/driver/usb/gadget but the real path is : ..../buildroot/output/build/linux-3.17-rc1/driver/usb/gadget Signed-off-by: Philippe Reynes Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Makefile | 2 +- drivers/usb/gadget/function/Makefile | 4 ++-- drivers/usb/gadget/legacy/Makefile | 6 +++--- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index a186afeaa700..9add915d41f7 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -3,7 +3,7 @@ # subdir-ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG subdir-ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG -ccflags-y += -I$(PWD)/drivers/usb/gadget/udc +ccflags-y += -Idrivers/usb/gadget/udc obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o libcomposite-y := usbstring.o config.o epautoconf.o diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile index 6d91f21b52a6..83ae1065149d 100644 --- a/drivers/usb/gadget/function/Makefile +++ b/drivers/usb/gadget/function/Makefile @@ -2,8 +2,8 @@ # USB peripheral controller drivers # -ccflags-y := -I$(PWD)/drivers/usb/gadget/ -ccflags-y += -I$(PWD)/drivers/usb/gadget/udc/ +ccflags-y := -Idrivers/usb/gadget/ +ccflags-y += -Idrivers/usb/gadget/udc/ # USB Functions usb_f_acm-y := f_acm.o diff --git a/drivers/usb/gadget/legacy/Makefile b/drivers/usb/gadget/legacy/Makefile index a11aad5635df..edba2d1ee0f3 100644 --- a/drivers/usb/gadget/legacy/Makefile +++ b/drivers/usb/gadget/legacy/Makefile @@ -2,9 +2,9 @@ # USB gadget drivers # -ccflags-y := -I$(PWD)/drivers/usb/gadget/ -ccflags-y += -I$(PWD)/drivers/usb/gadget/udc/ -ccflags-y += -I$(PWD)/drivers/usb/gadget/function/ +ccflags-y := -Idrivers/usb/gadget/ +ccflags-y += -Idrivers/usb/gadget/udc/ +ccflags-y += -Idrivers/usb/gadget/function/ g_zero-y := zero.o g_audio-y := audio.o From f6a8249f9e55d45a47777d2a3cc69defa23c87bb Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Sat, 9 Aug 2014 01:48:05 +0200 Subject: [PATCH 100/272] pinctrl: exynos: Lock GPIOs as interrupts when used as EINTs Currently after configuring a GPIO pin as an interrupt related pinmux registers are changed, but there is no protection from calling gpio_direction_*() in a badly written driver, which would cause the same pinmux register to be reconfigured for regular input/output and this disabling interrupt capability of the pin. This patch addresses this issue by moving pinmux reconfiguration to .irq_{request,release}_resources() callback of irq_chip and calling gpio_lock_as_irq() helper to prevent reconfiguration of pin direction. Setting up a GPIO interrupt on Samsung SoCs is a two-step operation - in addition to trigger configuration in a dedicated register, the pinmux must be also reconfigured to GPIO interrupt, which is a different function than normal GPIO input, although I/O-wise they both behave in the same way and gpio_get_value() can be used on a pin configured as IRQ as well. Such design implies subtleties such as gpio_direction_input() not having to fail if a pin is already configured as an interrupt nor change the configuration to normal input. But the FLAG_USED_AS_IRQ set in gpiolib by gpio_lock_as_irq() is only used to check that gpio_direction_output() is not called, it's not used to prevent gpio_direction_input() to be called. So this is not a complete solution for Samsung SoCs but it's definitely a move in the right direction. Signed-off-by: Tomasz Figa [javier: use request resources instead of startup and expand commit message] Signed-off-by: Javier Martinez Canillas Signed-off-by: Linus Walleij --- drivers/pinctrl/samsung/pinctrl-exynos.c | 69 +++++++++++++++++++++-- drivers/pinctrl/samsung/pinctrl-samsung.h | 1 + 2 files changed, 64 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 003bfd874a61..d7154ed0b0eb 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -127,14 +127,10 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) struct irq_chip *chip = irq_data_get_irq_chip(irqd); struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip); struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); - struct samsung_pin_bank_type *bank_type = bank->type; struct samsung_pinctrl_drv_data *d = bank->drvdata; - unsigned int pin = irqd->hwirq; - unsigned int shift = EXYNOS_EINT_CON_LEN * pin; + unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; unsigned int con, trig_type; unsigned long reg_con = our_chip->eint_con + bank->eint_offset; - unsigned long flags; - unsigned int mask; switch (type) { case IRQ_TYPE_EDGE_RISING: @@ -167,8 +163,32 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) con |= trig_type << shift; writel(con, d->virt_base + reg_con); + return 0; +} + +static int exynos_irq_request_resources(struct irq_data *irqd) +{ + struct irq_chip *chip = irq_data_get_irq_chip(irqd); + struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip); + struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); + struct samsung_pin_bank_type *bank_type = bank->type; + struct samsung_pinctrl_drv_data *d = bank->drvdata; + unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; + unsigned long reg_con = our_chip->eint_con + bank->eint_offset; + unsigned long flags; + unsigned int mask; + unsigned int con; + int ret; + + ret = gpio_lock_as_irq(&bank->gpio_chip, irqd->hwirq); + if (ret) { + dev_err(bank->gpio_chip.dev, "unable to lock pin %s-%lu IRQ\n", + bank->name, irqd->hwirq); + return ret; + } + reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC]; - shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC]; + shift = irqd->hwirq * bank_type->fld_width[PINCFG_TYPE_FUNC]; mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1; spin_lock_irqsave(&bank->slock, flags); @@ -180,9 +200,42 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) spin_unlock_irqrestore(&bank->slock, flags); + exynos_irq_unmask(irqd); + return 0; } +static void exynos_irq_release_resources(struct irq_data *irqd) +{ + struct irq_chip *chip = irq_data_get_irq_chip(irqd); + struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip); + struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); + struct samsung_pin_bank_type *bank_type = bank->type; + struct samsung_pinctrl_drv_data *d = bank->drvdata; + unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; + unsigned long reg_con = our_chip->eint_con + bank->eint_offset; + unsigned long flags; + unsigned int mask; + unsigned int con; + + reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC]; + shift = irqd->hwirq * bank_type->fld_width[PINCFG_TYPE_FUNC]; + mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1; + + exynos_irq_mask(irqd); + + spin_lock_irqsave(&bank->slock, flags); + + con = readl(d->virt_base + reg_con); + con &= ~(mask << shift); + con |= FUNC_INPUT << shift; + writel(con, d->virt_base + reg_con); + + spin_unlock_irqrestore(&bank->slock, flags); + + gpio_unlock_as_irq(&bank->gpio_chip, irqd->hwirq); +} + /* * irq_chip for gpio interrupts. */ @@ -193,6 +246,8 @@ static struct exynos_irq_chip exynos_gpio_irq_chip = { .irq_mask = exynos_irq_mask, .irq_ack = exynos_irq_ack, .irq_set_type = exynos_irq_set_type, + .irq_request_resources = exynos_irq_request_resources, + .irq_release_resources = exynos_irq_release_resources, }, .eint_con = EXYNOS_GPIO_ECON_OFFSET, .eint_mask = EXYNOS_GPIO_EMASK_OFFSET, @@ -336,6 +391,8 @@ static struct exynos_irq_chip exynos_wkup_irq_chip = { .irq_ack = exynos_irq_ack, .irq_set_type = exynos_irq_set_type, .irq_set_wake = exynos_wkup_irq_set_wake, + .irq_request_resources = exynos_irq_request_resources, + .irq_release_resources = exynos_irq_release_resources, }, .eint_con = EXYNOS_WKUP_ECON_OFFSET, .eint_mask = EXYNOS_WKUP_EMASK_OFFSET, diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index 2b882320e8e9..5cedc9d26390 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -26,6 +26,7 @@ #include /* pinmux function number for pin as gpio output line */ +#define FUNC_INPUT 0x0 #define FUNC_OUTPUT 0x1 /** From 0252d6a2ac2ad9961dace28e4c8c9abe6f2a0472 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Thu, 14 Aug 2014 15:59:21 -0700 Subject: [PATCH 101/272] pinctrl: qcom: apq8064: Correct interrupts in example The example in the binding document indicates that interrupt 32 is used for the TLMM summary IRQ. Correct this to reduce the confusion. Signed-off-by: Bjorn Andersson Signed-off-by: Linus Walleij --- .../devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt index 0211c6d8a522..92fae82f35f2 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt +++ b/Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt @@ -62,7 +62,7 @@ Example: #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; - interrupts = <0 32 0x4>; + interrupts = <0 16 0x4>; pinctrl-names = "default"; pinctrl-0 = <&gsbi5_uart_default>; From 87fa3bb0786f37dff0b92f2c38421dd56d8902a9 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 29 Jul 2014 19:09:39 +0800 Subject: [PATCH 102/272] Btrfs: fix regression of btrfs device replace Commit 49c6f736f34f901117c20960ebd7d5e60f12fcac( btrfs: dev replace should replace the sysfs entry) added the missing sysfs entry in the process of device replace, but didn't take missing devices into account, so now we have BUG: unable to handle kernel NULL pointer dereference at 0000000000000088 IP: [] btrfs_kobj_rm_device+0x21/0x40 [btrfs] ... To reproduce it, 1. mkfs.btrfs -f disk1 disk2 2. mkfs.ext4 disk1 3. mount disk2 /mnt -odegraded 4. btrfs replace start -B 1 disk3 /mnt -------------------------- This fixes the problem. Reported-by: Chris Murphy Signed-off-by: Liu Bo Reviewed-by: Satoru Takeuchi Tested-by: Satoru Takeuchi Signed-off-by: Chris Mason --- fs/btrfs/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 78699364f537..12e53556e214 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -614,7 +614,7 @@ int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info, if (!fs_info->device_dir_kobj) return -EINVAL; - if (one_device) { + if (one_device && one_device->bdev) { disk = one_device->bdev->bd_part; disk_kobj = &part_to_dev(disk)->kobj; From 9c3b306e1c9e6be4be09e99a8fe2227d1005effc Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Thu, 31 Jul 2014 14:41:07 +0100 Subject: [PATCH 103/272] Btrfs: race free update of commit root for ro snapshots This is a better solution for the problem addressed in the following commit: Btrfs: update commit root on snapshot creation after orphan cleanup (3821f348889e506efbd268cc8149e0ebfa47c4e5) The previous solution wasn't the best because of 2 reasons: 1) It added another full transaction commit, which is more expensive than just swapping the commit root with the root; 2) If a reboot happened after the first transaction commit (the one that creates the snapshot) and before the second transaction commit, then we would end up with the same problem if a send using that snapshot was requested before the first transaction commit after the reboot. This change addresses those 2 issues. The second issue is addressed by switching the commit root in the dentry lookup VFS callback, which is also called by the snapshot/subvol creation ioctl and performs orphan cleanup if needed. Like the vfs, the ioctl locks the parent inode too, preventing race issues between a dentry lookup and snapshot creation. Cc: Alex Lyakas Signed-off-by: Filipe Manana Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 36 ++++++++++++++++++++++++++++++++++++ fs/btrfs/ioctl.c | 33 --------------------------------- 2 files changed, 36 insertions(+), 33 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a3c6e76f5a4e..6dd6e50d143a 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5181,6 +5181,42 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) iput(inode); inode = ERR_PTR(ret); } + /* + * If orphan cleanup did remove any orphans, it means the tree + * was modified and therefore the commit root is not the same as + * the current root anymore. This is a problem, because send + * uses the commit root and therefore can see inode items that + * don't exist in the current root anymore, and for example make + * calls to btrfs_iget, which will do tree lookups based on the + * current root and not on the commit root. Those lookups will + * fail, returning a -ESTALE error, and making send fail with + * that error. So make sure a send does not see any orphans we + * have just removed, and that it will see the same inodes + * regardless of whether a transaction commit happened before + * it started (meaning that the commit root will be the same as + * the current root) or not. + */ + if (sub_root->node != sub_root->commit_root) { + u64 sub_flags = btrfs_root_flags(&sub_root->root_item); + + if (sub_flags & BTRFS_ROOT_SUBVOL_RDONLY) { + struct extent_buffer *eb; + + /* + * Assert we can't have races between dentry + * lookup called through the snapshot creation + * ioctl and the VFS. + */ + ASSERT(mutex_is_locked(&dir->i_mutex)); + + down_write(&root->fs_info->commit_root_sem); + eb = sub_root->commit_root; + sub_root->commit_root = + btrfs_root_node(sub_root); + up_write(&root->fs_info->commit_root_sem); + free_extent_buffer(eb); + } + } } return inode; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 47aceb494d1d..845287ca59c3 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -711,39 +711,6 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, if (ret) goto fail; - ret = btrfs_orphan_cleanup(pending_snapshot->snap); - if (ret) - goto fail; - - /* - * If orphan cleanup did remove any orphans, it means the tree was - * modified and therefore the commit root is not the same as the - * current root anymore. This is a problem, because send uses the - * commit root and therefore can see inode items that don't exist - * in the current root anymore, and for example make calls to - * btrfs_iget, which will do tree lookups based on the current root - * and not on the commit root. Those lookups will fail, returning a - * -ESTALE error, and making send fail with that error. So make sure - * a send does not see any orphans we have just removed, and that it - * will see the same inodes regardless of whether a transaction - * commit happened before it started (meaning that the commit root - * will be the same as the current root) or not. - */ - if (readonly && pending_snapshot->snap->node != - pending_snapshot->snap->commit_root) { - trans = btrfs_join_transaction(pending_snapshot->snap); - if (IS_ERR(trans) && PTR_ERR(trans) != -ENOENT) { - ret = PTR_ERR(trans); - goto fail; - } - if (!IS_ERR(trans)) { - ret = btrfs_commit_transaction(trans, - pending_snapshot->snap); - if (ret) - goto fail; - } - } - inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry); if (IS_ERR(inode)) { ret = PTR_ERR(inode); From 5762b5c958abbecb7fb9f4596a6476d1ce91ecf6 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Fri, 1 Aug 2014 00:10:32 +0100 Subject: [PATCH 104/272] Btrfs: ensure tmpfile inode is always persisted with link count of 0 If we open a file with O_TMPFILE, don't do any further operation on it (so that the inode item isn't updated) and then force a transaction commit, we get a persisted inode item with a link count of 1, and not 0 as it should be. Steps to reproduce it (requires a modern xfs_io with -T support): $ mkfs.btrfs -f /dev/sdd $ mount -o /dev/sdd /mnt $ xfs_io -T /mnt & $ sync Then btrfs-debug-tree shows the inode item with a link count of 1: $ btrfs-debug-tree /dev/sdd (...) fs tree key (FS_TREE ROOT_ITEM 0) leaf 29556736 items 4 free space 15851 generation 6 owner 5 fs uuid f164d01b-1b92-481d-a4e4-435fb0f843d0 chunk uuid 0e3d0e56-bcca-4a1c-aa5f-cec2c6f4f7a6 item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160 inode generation 3 transid 6 size 0 block group 0 mode 40755 links 1 item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12 inode ref index 0 namelen 2 name: .. item 2 key (257 INODE_ITEM 0) itemoff 15951 itemsize 160 inode generation 6 transid 6 size 0 block group 0 mode 100600 links 1 item 3 key (ORPHAN ORPHAN_ITEM 257) itemoff 15951 itemsize 0 orphan item checksum tree key (CSUM_TREE ROOT_ITEM 0) (...) Signed-off-by: Filipe Manana Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 6dd6e50d143a..57c3129ee2a2 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5641,6 +5641,13 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, return ERR_PTR(-ENOMEM); } + /* + * O_TMPFILE, set link count to 0, so that after this point, + * we fill in an inode item with the correct link count. + */ + if (!name) + set_nlink(inode, 0); + /* * we have to initialize this early, so we can reclaim the inode * number if we fail afterwards in this function. @@ -9007,6 +9014,14 @@ static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) if (ret) goto out; + /* + * We set number of links to 0 in btrfs_new_inode(), and here we set + * it to 1 because d_tmpfile() will issue a warning if the count is 0, + * through: + * + * d_tmpfile() -> inode_dec_link_count() -> drop_nlink() + */ + set_nlink(inode, 1); d_tmpfile(dentry, inode); mark_inode_dirty(inode); From 74121f7cbb2f60b41c48184ad5b889c0704e7b90 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Thu, 7 Aug 2014 12:00:44 +0100 Subject: [PATCH 105/272] Btrfs: fix hole detection during file fsync The file hole detection logic during a file fsync wasn't correct, because it didn't look back (in a previous leaf) for the last file extent item that can be in a leaf to the left of our leaf and that has a generation lower than the current transaction id. This made it assume that a hole exists when it really doesn't exist in the file. Such false positive hole detection happens in the following scenario: * We have a file that has many file extent items, covering 3 or more btree leafs (the first leaf must contain non file extent items too). * Two ranges of the file are modified, with their extent items being located at 2 different leafs and those leafs aren't consecutive. * When processing the second modified leaf, we weren't checking if some file extent item exists that is located in some leaf that is between our 2 modified leafs, and therefore assumed the range defined between the last file extent item in the first leaf and the first file extent item in the second leaf matched a hole. Fortunately this didn't result in overriding the log with wrong data, instead it made the last loop in copy_items() attempt to insert a duplicated key (for a hole file extent item), which makes the file fsync code return with -EEXIST to file.c:btrfs_sync_file() which in turn ends up doing a full transaction commit, which is much more expensive then writing only to the log tree and wait for it to be durably persisted (as well as the file's modified extents/pages). Therefore fix the hole detection logic, so that we don't pay the cost of doing full transaction commits. I could trigger this issue with the following test for xfstests (which never fails, either without or with this patch). The last fsync call results in a full transaction commit, due to the -EEXIST error mentioned above. I could also observe this behaviour happening frequently when running xfstests/generic/075 in a loop. Test: _cleanup() { _cleanup_flakey rm -fr $tmp } # get standard environment, filters and checks . ./common/rc . ./common/filter . ./common/dmflakey # real QA test starts here _supported_fs btrfs _supported_os Linux _require_scratch _require_dm_flakey _need_to_be_root rm -f $seqres.full # Create a file with many file extent items, each representing a 4Kb extent. # These items span 3 btree leaves, of 16Kb each (default mkfs.btrfs leaf size # as of btrfs-progs 3.12). _scratch_mkfs -l 16384 >/dev/null 2>&1 _init_flakey SAVE_MOUNT_OPTIONS="$MOUNT_OPTIONS" MOUNT_OPTIONS="$MOUNT_OPTIONS -o commit=999" _mount_flakey # First fsync, inode has BTRFS_INODE_NEEDS_FULL_SYNC flag set. $XFS_IO_PROG -f -c "pwrite -S 0x01 -b 4096 0 4096" -c "fsync" \ $SCRATCH_MNT/foo | _filter_xfs_io # For any of the following fsync calls, inode doesn't have the flag # BTRFS_INODE_NEEDS_FULL_SYNC set. for ((i = 1; i <= 500; i++)); do OFFSET=$((4096 * i)) LEN=4096 $XFS_IO_PROG -c "pwrite -S 0x01 $OFFSET $LEN" -c "fsync" \ $SCRATCH_MNT/foo | _filter_xfs_io done # Commit transaction and bump next transaction's id (to 7). sync # Truncate will set the BTRFS_INODE_NEEDS_FULL_SYNC flag in the btrfs's # inode runtime flags. $XFS_IO_PROG -c "truncate 2048000" $SCRATCH_MNT/foo # Commit transaction and bump next transaction's id (to 8). sync # Touch 1 extent item from the first leaf and 1 from the last leaf. The leaf # in the middle, containing only file extent items, isn't touched. So the # next fsync, when calling btrfs_search_forward(), won't visit that middle # leaf. First and 3rd leaf have now a generation with value 8, while the # middle leaf remains with a generation with value 6. $XFS_IO_PROG \ -c "pwrite -S 0xee -b 4096 0 4096" \ -c "pwrite -S 0xff -b 4096 2043904 4096" \ -c "fsync" \ $SCRATCH_MNT/foo | _filter_xfs_io _load_flakey_table $FLAKEY_DROP_WRITES md5sum $SCRATCH_MNT/foo | _filter_scratch _unmount_flakey _load_flakey_table $FLAKEY_ALLOW_WRITES # During mount, we'll replay the log created by the fsync above, and the file's # md5 digest should be the same we got before the unmount. _mount_flakey md5sum $SCRATCH_MNT/foo | _filter_scratch _unmount_flakey MOUNT_OPTIONS="$SAVE_MOUNT_OPTIONS" status=0 exit Signed-off-by: Filipe Manana Signed-off-by: Chris Mason --- fs/btrfs/tree-log.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 9e1f2cd5e67a..7e0e6e3029dd 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -3298,7 +3298,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, struct list_head ordered_sums; int skip_csum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM; bool has_extents = false; - bool need_find_last_extent = (*last_extent == 0); + bool need_find_last_extent = true; bool done = false; INIT_LIST_HEAD(&ordered_sums); @@ -3352,8 +3352,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, */ if (ins_keys[i].type == BTRFS_EXTENT_DATA_KEY) { has_extents = true; - if (need_find_last_extent && - first_key.objectid == (u64)-1) + if (first_key.objectid == (u64)-1) first_key = ins_keys[i]; } else { need_find_last_extent = false; @@ -3427,6 +3426,16 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, if (!has_extents) return ret; + if (need_find_last_extent && *last_extent == first_key.offset) { + /* + * We don't have any leafs between our current one and the one + * we processed before that can have file extent items for our + * inode (and have a generation number smaller than our current + * transaction id). + */ + need_find_last_extent = false; + } + /* * Because we use btrfs_search_forward we could skip leaves that were * not modified and then assume *last_extent is valid when it really @@ -3537,7 +3546,7 @@ fill_holes: 0, 0); if (ret) break; - *last_extent = offset + len; + *last_extent = extent_end; } /* * Need to let the callers know we dropped the path so they should From 7064dd5c36187725e7ccfd837e07678ae435d3f5 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Fri, 8 Aug 2014 02:47:05 +0100 Subject: [PATCH 106/272] Btrfs: don't monopolize a core when evicting inode If an inode has a very large number of extent maps, we can spend a lot of time freeing them, which triggers a soft lockup warning. Therefore reschedule if we need to when freeing the extent maps while evicting the inode. I could trigger this all the time by running xfstests/generic/299 on a file system with the no-holes feature enabled. That test creates an inode with 11386677 extent maps. $ mkfs.btrfs -f -O no-holes $TEST_DEV $ MKFS_OPTIONS="-O no-holes" ./check generic/299 generic/299 382s ... Message from syslogd@debian-vm3 at Aug 7 10:44:29 ... kernel:[85304.208017] BUG: soft lockup - CPU#0 stuck for 22s! [umount:25330] 384s Ran: generic/299 Passed all 1 tests $ dmesg (...) [86304.300017] BUG: soft lockup - CPU#0 stuck for 23s! [umount:25330] (...) [86304.300036] Call Trace: [86304.300036] [] __slab_free+0x54/0x295 [86304.300036] [] ? free_extent_map+0x5c/0xb0 [btrfs] [86304.300036] [] kmem_cache_free+0x282/0x2a0 [86304.300036] [] free_extent_map+0x5c/0xb0 [btrfs] [86304.300036] [] btrfs_evict_inode+0xd5/0x660 [btrfs] [86304.300036] [] ? __inode_wait_for_writeback+0x6d/0xc0 [86304.300036] [] ? _raw_spin_unlock+0x2b/0x40 [86304.300036] [] evict+0xab/0x180 [86304.300036] [] dispose_list+0x3e/0x60 [86304.300036] [] evict_inodes+0xf4/0x110 [86304.300036] [] generic_shutdown_super+0x53/0x110 [86304.300036] [] kill_anon_super+0x16/0x30 [86304.300036] [] btrfs_kill_super+0x1a/0xa0 [btrfs] [86304.300036] [] deactivate_locked_super+0x59/0x80 [86304.300036] [] deactivate_super+0x4e/0x70 [86304.300036] [] mntput_no_expire+0x174/0x1f0 [86304.300036] [] ? mntput_no_expire+0x17/0x1f0 [86304.300036] [] SyS_umount+0x97/0x100 (...) Signed-off-by: Filipe Manana Reviewed-by: Satoru Takeuchi Tested-by: Satoru Takeuchi Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 57c3129ee2a2..2ac260d41ccd 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4674,6 +4674,11 @@ static void evict_inode_truncate_pages(struct inode *inode) clear_bit(EXTENT_FLAG_LOGGING, &em->flags); remove_extent_mapping(map_tree, em); free_extent_map(em); + if (need_resched()) { + write_unlock(&map_tree->lock); + cond_resched(); + write_lock(&map_tree->lock); + } } write_unlock(&map_tree->lock); @@ -4696,6 +4701,7 @@ static void evict_inode_truncate_pages(struct inode *inode) &cached_state, GFP_NOFS); free_extent_state(state); + cond_resched(); spin_lock(&io_tree->lock); } spin_unlock(&io_tree->lock); From 62e2390e1ad78f956e96a6a831761adc6f2bf58a Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Fri, 8 Aug 2014 02:47:06 +0100 Subject: [PATCH 107/272] Btrfs: clone, don't create invalid hole extent map When cloning a file that consists of an inline extent, we were creating an extent map that represents a non-existing trailing hole starting at a file offset that isn't a multiple of the sector size. This happened because when processing an inline extent we weren't aligning the extent's length to the sector size, and therefore incorrectly treating the range [inline_extent_length; sector_size[ as a hole. Signed-off-by: Filipe Manana Reviewed-by: Satoru Takeuchi Signed-off-by: Chris Mason --- fs/btrfs/ioctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 845287ca59c3..fce6fd0e3f50 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3494,7 +3494,8 @@ process_slot: btrfs_mark_buffer_dirty(leaf); btrfs_release_path(path); - last_dest_end = new_key.offset + datal; + last_dest_end = ALIGN(new_key.offset + datal, + root->sectorsize); ret = clone_finish_inode_update(trans, inode, last_dest_end, destoff, olen); From 51f395ad4058883e4273b02fdebe98072dbdc0d2 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Fri, 8 Aug 2014 13:06:20 +0800 Subject: [PATCH 108/272] btrfs: Use right extent length when inserting overlap extent map. When current btrfs finds that a new extent map is going to be insereted but failed with -EEXIST, it will try again to insert the extent map but with the length of sectorsize. This is OK if we don't enable 'no-holes' feature since all extent space is continuous, we will not go into the not found->insert routine. But if we enable 'no-holes' feature, it will make things out of control. e.g. in 4K sectorsize, we pass the following args to btrfs_get_extent(): btrfs_get_extent() args: start: 27874 len 4100 28672 27874 28672 27874+4100 32768 |-----------------------| |---------hole--------------------|---------data----------| 1) not found and insert Since no extent map containing the range, btrfs_get_extent() will go into the not_found and insert routine, which will try to insert the extent map (27874, 27847 + 4100). 2) first overlap But it overlaps with (28672, 32768) extent, so -EEXIST will be returned by add_extent_mapping(). 3) retry but still overlap After catching the -EEXIST, then btrfs_get_extent() will try insert it again but with 4K length, which still overlaps, so -EEXIST will be returned. This makes the following patch fail to punch hole. d77815461f047e561f77a07754ae923ade597d4e btrfs: Avoid trucating page or punching hole in a already existed hole. This patch will use the right length, which is the (exsisting->start - em->start) to insert, making the above patch works in 'no-holes' mode. Also, some small code style problems in above patch is fixed too. Reported-by: Filipe David Manana Signed-off-by: Qu Wenruo Reviewed-by: Filipe David Manana Tested-by: Filipe David Manana Signed-off-by: Chris Mason --- fs/btrfs/file.c | 4 ++-- fs/btrfs/inode.c | 7 +++---- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 77e33534c7d6..f15c13f97018 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2215,7 +2215,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) goto out_only_mutex; } - lockstart = round_up(offset , BTRFS_I(inode)->root->sectorsize); + lockstart = round_up(offset, BTRFS_I(inode)->root->sectorsize); lockend = round_down(offset + len, BTRFS_I(inode)->root->sectorsize) - 1; same_page = ((offset >> PAGE_CACHE_SHIFT) == @@ -2276,7 +2276,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) tail_start + tail_len, 0, 1); if (ret) goto out_only_mutex; - } + } } } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 2ac260d41ccd..ae98df67950f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -6146,14 +6146,14 @@ out_fail: static int merge_extent_mapping(struct extent_map_tree *em_tree, struct extent_map *existing, struct extent_map *em, - u64 map_start, u64 map_len) + u64 map_start) { u64 start_diff; BUG_ON(map_start < em->start || map_start >= extent_map_end(em)); start_diff = map_start - em->start; em->start = map_start; - em->len = map_len; + em->len = existing->start - em->start; if (em->block_start < EXTENT_MAP_LAST_BYTE && !test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) { em->block_start += start_diff; @@ -6441,8 +6441,7 @@ insert: em->len); if (existing) { err = merge_extent_mapping(em_tree, existing, - em, start, - root->sectorsize); + em, start); free_extent_map(existing); if (err) { free_extent_map(em); From a3c108950d8e0bfcf48856cc159956022a7ad925 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Sun, 17 Aug 2014 15:09:21 -0500 Subject: [PATCH 109/272] btrfs: fix leak in qgroup_subtree_accounting() error path Coverity pointed this out; in the newly added qgroup_subtree_accounting(), if btrfs_find_all_roots() returns an error, we leak at least the parents pointer, and possibly the roots pointer, depending on what failure occurs. If btrfs_find_all_roots() returns an error, we need to free up all allocations before we return. "roots" is initialized to NULL, so it should be safe to free it unconditionally (ulist_free() handles that case). Cc: Mark Fasheh Signed-off-by: Eric Sandeen Reviewed-by: Mark Fasheh Signed-off-by: Chris Mason --- fs/btrfs/qgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index b497498484be..8abe45524de9 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1973,7 +1973,7 @@ static int qgroup_subtree_accounting(struct btrfs_trans_handle *trans, elem.seq, &roots); btrfs_put_tree_mod_seq(fs_info, &elem); if (ret < 0) - return ret; + goto out; if (roots->nnodes != 1) goto out; From 38c1c2e44bacb37efd68b90b3f70386a8ee370ee Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 19 Aug 2014 23:33:13 +0800 Subject: [PATCH 110/272] Btrfs: fix crash on endio of reading corrupted block The crash is ------------[ cut here ]------------ kernel BUG at fs/btrfs/extent_io.c:2124! [...] Workqueue: btrfs-endio normal_work_helper [btrfs] RIP: 0010:[] [] end_bio_extent_readpage+0xb45/0xcd0 [btrfs] This is in fact a regression. It is because we forgot to increase @offset properly in reading corrupted block, so that the @offset remains, and this leads to checksum errors while reading left blocks queued up in the same bio, and then ends up with hiting the above BUG_ON. Reported-by: Chris Murphy Signed-off-by: Liu Bo Signed-off-by: Chris Mason --- fs/btrfs/extent_io.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 1c70cff4a9e1..f34b1e262d4e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2532,6 +2532,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err) test_bit(BIO_UPTODATE, &bio->bi_flags); if (err) uptodate = 0; + offset += len; continue; } } From f6dc45c7a93a011dff6eb9b2ffda59c390c7705a Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Wed, 20 Aug 2014 07:15:33 -0700 Subject: [PATCH 111/272] Btrfs: fix filemap_flush call in btrfs_file_release We should only be flushing on close if the file was flagged as needing it during truncate. I broke this with my ordered data vs transaction commit deadlock fix. Thanks to Miao Xie for catching this. Signed-off-by: Chris Mason Reported-by: Miao Xie Reported-by: Fengguang Wu --- fs/btrfs/file.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index f15c13f97018..36861b7a6757 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1840,7 +1840,15 @@ int btrfs_release_file(struct inode *inode, struct file *filp) { if (filp->private_data) btrfs_ioctl_trans_end(filp); - filemap_flush(inode->i_mapping); + /* + * ordered_data_close is set by settattr when we are about to truncate + * a file from a non-zero size to a zero size. This tries to + * flush down new bytes that may have been written if the + * application were using truncate to replace a file in place. + */ + if (test_and_clear_bit(BTRFS_INODE_ORDERED_DATA_CLOSE, + &BTRFS_I(inode)->runtime_flags)) + filemap_flush(inode->i_mapping); return 0; } From 3f2dad99f6fccfce46aea289ff174485320b69b4 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Thu, 21 Aug 2014 18:25:05 +0300 Subject: [PATCH 112/272] spi: davinci: fix SPI_NO_CS functionality The driver should not touch CS lines if SPI_NO_CS flag is set. This patch fixes it as this functionality was broken accidentally by commit a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt"). Fixes: a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt") Signed-off-by: Grygorii Strashko Signed-off-by: Mark Brown --- drivers/spi/spi-davinci.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 276a3884fb3c..48f1d26e6ad9 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -417,16 +417,16 @@ static int davinci_spi_setup(struct spi_device *spi) flags, dev_name(&spi->dev)); internal_cs = false; } - } - if (retval) { - dev_err(&spi->dev, "GPIO %d setup failed (%d)\n", - spi->cs_gpio, retval); - return retval; - } + if (retval) { + dev_err(&spi->dev, "GPIO %d setup failed (%d)\n", + spi->cs_gpio, retval); + return retval; + } - if (internal_cs) - set_io_bits(dspi->base + SPIPC0, 1 << spi->chip_select); + if (internal_cs) + set_io_bits(dspi->base + SPIPC0, 1 << spi->chip_select); + } if (spi->mode & SPI_READY) set_io_bits(dspi->base + SPIPC0, SPIPC0_SPIENA_MASK); From 4fb12fe9c34928c1d2bed817e144aec3f44540e9 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 5 Aug 2014 18:24:30 -0700 Subject: [PATCH 113/272] ARM: shmobile: r8a7790: add missing 0x0100 for SDCKCR 9f13ee6f83c52065112d3e396e42e3780911ef53 (ARM: shmobile: r8a7790: add div4 clocks) added r8a7790 DIV4 clock support. But, it is missing "0x0100: x 1/8" division ratio. This patch fixes hidden bug. It is based on R-Car H2 v0.7, R-Car M2 v0.9. Reported-by: Yusuke Goda Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/clock-r8a7790.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-shmobile/clock-r8a7790.c b/arch/arm/mach-shmobile/clock-r8a7790.c index 296a057109e4..c62bfe76a17e 100644 --- a/arch/arm/mach-shmobile/clock-r8a7790.c +++ b/arch/arm/mach-shmobile/clock-r8a7790.c @@ -181,8 +181,8 @@ enum { static struct clk div4_clks[DIV4_NR] = { [DIV4_SDH] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 8, 0x0dff, CLK_ENABLE_ON_INIT), - [DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1de0, CLK_ENABLE_ON_INIT), - [DIV4_SD1] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 0, 0x1de0, CLK_ENABLE_ON_INIT), + [DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1df0, CLK_ENABLE_ON_INIT), + [DIV4_SD1] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 0, 0x1df0, CLK_ENABLE_ON_INIT), }; /* DIV6 clocks */ From 58b80ad6472c0fa12926dfa1f9103d3a326bdf18 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 5 Aug 2014 18:24:51 -0700 Subject: [PATCH 114/272] ARM: shmobile: r8a7791: add missing 0x0100 for SDCKCR 4bfb358b1d6cdeff8c6a13677f01ed78e9696b98 (ARM: shmobile: Add r8a7791 legacy SDHI clocks) added r8a7791 SDHI clock support. But, it is missing "0x0100: x 1/8" division ratio. This patch fixes hidden bug. It is based on R-Car H2 v0.7, R-Car M2 v0.9. Reported-by: Yusuke Goda Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/clock-r8a7791.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/clock-r8a7791.c b/arch/arm/mach-shmobile/clock-r8a7791.c index e2fdfcc14436..53161c4c97f6 100644 --- a/arch/arm/mach-shmobile/clock-r8a7791.c +++ b/arch/arm/mach-shmobile/clock-r8a7791.c @@ -152,7 +152,7 @@ enum { static struct clk div4_clks[DIV4_NR] = { [DIV4_SDH] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 8, 0x0dff, CLK_ENABLE_ON_INIT), - [DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1de0, CLK_ENABLE_ON_INIT), + [DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1df0, CLK_ENABLE_ON_INIT), }; /* DIV6 clocks */ From 274a5843ff2f08a89464589d90c64eb65f2c0847 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 15 Aug 2014 12:44:08 -0600 Subject: [PATCH 115/272] blk-mq: don't allow merges if turned off for the queue blk-mq uses BLK_MQ_F_SHOULD_MERGE, as set by the driver at init time, to determine whether it should merge IO or not. However, this could also be disabled by the admin, if merging is switched off through sysfs. So check the general queue state as well before attempting to merge IO. Reported-by: Rob Elliott Tested-by: Rob Elliott Signed-off-by: Jens Axboe --- block/blk-mq.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index ac8a0413664e..c9e89a8792e3 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1068,13 +1068,17 @@ static void blk_mq_bio_to_request(struct request *rq, struct bio *bio) blk_account_io_start(rq, 1); } +static inline bool hctx_allow_merges(struct blk_mq_hw_ctx *hctx) +{ + return (hctx->flags & BLK_MQ_F_SHOULD_MERGE) && + !blk_queue_nomerges(hctx->queue); +} + static inline bool blk_mq_merge_queue_io(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx, struct request *rq, struct bio *bio) { - struct request_queue *q = hctx->queue; - - if (!(hctx->flags & BLK_MQ_F_SHOULD_MERGE)) { + if (!hctx_allow_merges(hctx)) { blk_mq_bio_to_request(rq, bio); spin_lock(&ctx->lock); insert_rq: @@ -1082,6 +1086,8 @@ insert_rq: spin_unlock(&ctx->lock); return false; } else { + struct request_queue *q = hctx->queue; + spin_lock(&ctx->lock); if (!blk_mq_attempt_merge(q, ctx, bio)) { blk_mq_bio_to_request(rq, bio); From 16f408dc6b1c87f5e3a767626df09c1399c6bf70 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 13 Aug 2014 14:49:31 +0300 Subject: [PATCH 116/272] block: Fix BUG_ON when pi errors occur When getting a pi error we get to bio_integrity_end_io with bi_remaining already decremented to 0 where we will eventually need to call bio_endio with restored original bio completion handler. Calling bio_endio invokes a BUG_ON(). We should call bio_endio_nodec instead, like what is done in bio_integrity_verify_fn. Signed-off-by: Sagi Grimberg Signed-off-by: Jens Axboe --- block/bio-integrity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index bc423f7b02da..f14b4abbebd8 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -520,7 +520,7 @@ void bio_integrity_endio(struct bio *bio, int error) */ if (error) { bio->bi_end_io = bip->bip_end_io; - bio_endio(bio, error); + bio_endio_nodec(bio, error); return; } From a68aafa5b297d99c2d0c38689089a752126e9e79 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 15 Aug 2014 13:19:15 -0600 Subject: [PATCH 117/272] blk-mq: correct a few wrong/bad comments Just grammar or spelling errors, nothing major. Signed-off-by: Jens Axboe --- block/blk-mq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index c9e89a8792e3..a0565bb20fd5 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1580,7 +1580,7 @@ static int blk_mq_init_hw_queues(struct request_queue *q, hctx->tags = set->tags[i]; /* - * Allocate space for all possible cpus to avoid allocation in + * Allocate space for all possible cpus to avoid allocation at * runtime */ hctx->ctxs = kmalloc_node(nr_cpu_ids * sizeof(void *), @@ -1668,8 +1668,8 @@ static void blk_mq_map_swqueue(struct request_queue *q) queue_for_each_hw_ctx(q, hctx, i) { /* - * If not software queues are mapped to this hardware queue, - * disable it and free the request entries + * If no software queues are mapped to this hardware queue, + * disable it and free the request entries. */ if (!hctx->nr_ctx) { struct blk_mq_tag_set *set = q->tag_set; From cddd5d17642cc6881352732693c2ae6930e9ce65 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 16 Aug 2014 08:02:24 -0400 Subject: [PATCH 118/272] blk-mq: blk_mq_freeze_queue() should allow nesting While converting to percpu_ref for freezing, add703fda981 ("blk-mq: use percpu_ref for mq usage count") incorrectly made blk_mq_freeze_queue() misbehave when freezing is nested due to percpu_ref_kill() being invoked on an already killed ref. Fix it by making blk_mq_freeze_queue() kill and kick the queue only for the outermost freeze attempt. All the nested ones can simply wait for the ref to reach zero. While at it, remove unnecessary @wake initialization from blk_mq_unfreeze_queue(). Signed-off-by: Tejun Heo Reported-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-mq.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index a0565bb20fd5..7950f8d7c1bb 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -112,18 +112,22 @@ static void blk_mq_usage_counter_release(struct percpu_ref *ref) */ void blk_mq_freeze_queue(struct request_queue *q) { + bool freeze; + spin_lock_irq(q->queue_lock); - q->mq_freeze_depth++; + freeze = !q->mq_freeze_depth++; spin_unlock_irq(q->queue_lock); - percpu_ref_kill(&q->mq_usage_counter); - blk_mq_run_queues(q, false); + if (freeze) { + percpu_ref_kill(&q->mq_usage_counter); + blk_mq_run_queues(q, false); + } wait_event(q->mq_freeze_wq, percpu_ref_is_zero(&q->mq_usage_counter)); } static void blk_mq_unfreeze_queue(struct request_queue *q) { - bool wake = false; + bool wake; spin_lock_irq(q->queue_lock); wake = !--q->mq_freeze_depth; From ffb5db73ebe9b5c37fd741e1684833dd674372bd Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 13 Aug 2014 13:59:50 +0200 Subject: [PATCH 119/272] block: systemace: Remove .owner field for driver There is no need to init .owner field. Based on the patch from Peter Griffin "mmc: remove .owner field for drivers using module_platform_driver" This patch removes the superflous .owner field for drivers which use the module_platform_driver API, as this is overriden in platform_driver_register anyway." Signed-off-by: Michal Simek Signed-off-by: Jens Axboe --- drivers/block/xsysace.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index ab3ea62e5dfc..c4328d9d9981 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1203,7 +1203,6 @@ static struct platform_driver ace_platform_driver = { .probe = ace_probe, .remove = ace_remove, .driver = { - .owner = THIS_MODULE, .name = "xsysace", .of_match_table = ace_of_match, }, From aeac31819475ad0980cb3a13d5599f5a1127e83d Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 18 Aug 2014 12:49:08 +0400 Subject: [PATCH 120/272] brd: add ram disk visibility option Currenly ram disk is not visiable inside /proc/partitions. This was done for compatibility reasons here: 53978d0a7a27. But some utilities expect disk presents in /proc/partitions. Let's add module's option and let's administrator chose visibility behaviour. By default, old behaviour preserved. Signed-off-by: Dmitry Monakhov Signed-off-by: Jens Axboe --- drivers/block/brd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/block/brd.c b/drivers/block/brd.c index c7d138eca731..3598110d2cef 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -442,12 +442,15 @@ static int rd_nr; int rd_size = CONFIG_BLK_DEV_RAM_SIZE; static int max_part; static int part_shift; +static int part_show = 0; module_param(rd_nr, int, S_IRUGO); MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices"); module_param(rd_size, int, S_IRUGO); MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes."); module_param(max_part, int, S_IRUGO); MODULE_PARM_DESC(max_part, "Maximum number of partitions per RAM disk"); +module_param(part_show, int, S_IRUGO); +MODULE_PARM_DESC(part_show, "Control RAM disk visibility in /proc/partitions"); MODULE_LICENSE("GPL"); MODULE_ALIAS_BLOCKDEV_MAJOR(RAMDISK_MAJOR); MODULE_ALIAS("rd"); @@ -501,7 +504,8 @@ static struct brd_device *brd_alloc(int i) disk->fops = &brd_fops; disk->private_data = brd; disk->queue = brd->brd_queue; - disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; + if (!part_show) + disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; sprintf(disk->disk_name, "ram%d", i); set_capacity(disk, rd_size * 2); From 2cada584b20007470931080c49310d85908449b0 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 21 Aug 2014 20:38:27 -0500 Subject: [PATCH 121/272] block: cleanup error handling in sg_io Make sure we always clean up through the out label and just have a single place to put the request. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 51bf5155ee75..ba8706f6cded 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -279,7 +279,6 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, r = blk_rq_unmap_user(bio); if (!ret) ret = r; - blk_put_request(rq); return ret; } @@ -322,10 +321,9 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, return -ENOMEM; blk_rq_set_block_pc(rq); - if (blk_fill_sghdr_rq(q, rq, hdr, mode)) { - blk_put_request(rq); - return -EFAULT; - } + ret = -EFAULT; + if (blk_fill_sghdr_rq(q, rq, hdr, mode)) + goto out; if (hdr->iovec_count) { size_t iov_data_len; @@ -376,7 +374,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, hdr->duration = jiffies_to_msecs(jiffies - start_time); - return blk_complete_sghdr_rq(rq, hdr, bio); + ret = blk_complete_sghdr_rq(rq, hdr, bio); out: blk_put_request(rq); return ret; From a57821cac6bb6e46abea118e34d0e86444ec1410 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 21 Aug 2014 20:39:53 -0500 Subject: [PATCH 122/272] block: support > 16 byte CDBs for SG_IO Signed-off-by: Christoph Hellwig Reviewed-by: Boaz Harrosh Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index ba8706f6cded..1d78e6cf9d61 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -296,8 +296,6 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, if (hdr->interface_id != 'S') return -EINVAL; - if (hdr->cmd_len > BLK_MAX_CDB) - return -EINVAL; if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9)) return -EIO; @@ -316,14 +314,21 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, if (hdr->flags & SG_FLAG_Q_AT_HEAD) at_head = 1; + ret = -ENOMEM; rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL); if (!rq) - return -ENOMEM; + goto out; blk_rq_set_block_pc(rq); + if (hdr->cmd_len > BLK_MAX_CDB) { + rq->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL); + if (!rq->cmd) + goto out_put_request; + } + ret = -EFAULT; if (blk_fill_sghdr_rq(q, rq, hdr, mode)) - goto out; + goto out_free_cdb; if (hdr->iovec_count) { size_t iov_data_len; @@ -333,7 +338,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, 0, NULL, &iov); if (ret < 0) { kfree(iov); - goto out; + goto out_free_cdb; } iov_data_len = ret; @@ -356,7 +361,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, GFP_KERNEL); if (ret) - goto out; + goto out_free_cdb; bio = rq->bio; memset(sense, 0, sizeof(sense)); @@ -375,8 +380,13 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, hdr->duration = jiffies_to_msecs(jiffies - start_time); ret = blk_complete_sghdr_rq(rq, hdr, bio); -out: + +out_free_cdb: + if (rq->cmd != rq->__cmd) + kfree(rq->cmd); +out_put_request: blk_put_request(rq); +out: return ret; } From ddc64b278a4dda052390b3de1b551e59acdff105 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 21 Aug 2014 20:55:21 +0200 Subject: [PATCH 123/272] ALSA: core: fix buffer overflow in snd_info_get_line() snd_info_get_line() documents that its last parameter must be one less than the buffer size, but this API design guarantees that (literally) every caller gets it wrong. Just change this parameter to have its obvious meaning. Reported-by: Tommi Rantala Cc: # v2.2.26+ Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/info.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/core/info.c b/sound/core/info.c index 051d55b05521..9f404e965ea2 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -684,7 +684,7 @@ int snd_info_card_free(struct snd_card *card) * snd_info_get_line - read one line from the procfs buffer * @buffer: the procfs buffer * @line: the buffer to store - * @len: the max. buffer size - 1 + * @len: the max. buffer size * * Reads one line from the buffer and stores the string. * @@ -704,7 +704,7 @@ int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) buffer->stop = 1; if (c == '\n') break; - if (len) { + if (len > 1) { len--; *line++ = c; } From 3c25d041293879a8b7ff522f3a42267c45a3ab79 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Fri, 22 Aug 2014 11:22:09 +0200 Subject: [PATCH 124/272] ALSA: hda: ca0132_regs.h: Fix typo in include guard Signed-off-by: Rasmus Villemoes Signed-off-by: Takashi Iwai --- sound/pci/hda/ca0132_regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/ca0132_regs.h b/sound/pci/hda/ca0132_regs.h index 07e760937d3c..8371274aa811 100644 --- a/sound/pci/hda/ca0132_regs.h +++ b/sound/pci/hda/ca0132_regs.h @@ -20,7 +20,7 @@ */ #ifndef __CA0132_REGS_H -#define __CA0312_REGS_H +#define __CA0132_REGS_H #define DSP_CHIP_OFFSET 0x100000 #define DSP_DBGCNTL_MODULE_OFFSET 0xE30 From ee3043b2d7b1bfe03cd697b144abf25954ec5fc6 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Fri, 22 Aug 2014 11:23:09 +0200 Subject: [PATCH 125/272] ALSA: ctxfi: ct20k1reg: Fix typo in include guard Signed-off-by: Rasmus Villemoes Signed-off-by: Takashi Iwai --- sound/pci/ctxfi/ct20k1reg.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/sound/pci/ctxfi/ct20k1reg.h b/sound/pci/ctxfi/ct20k1reg.h index f2e34e3f27ee..5851249f11d9 100644 --- a/sound/pci/ctxfi/ct20k1reg.h +++ b/sound/pci/ctxfi/ct20k1reg.h @@ -7,7 +7,7 @@ */ #ifndef CT20K1REG_H -#define CT20k1REG_H +#define CT20K1REG_H /* 20k1 registers */ #define DSPXRAM_START 0x000000 @@ -632,5 +632,3 @@ #define I2SD_R 0x19L #endif /* CT20K1REG_H */ - - From 94a988a8ab91c0cdabd2431281ec09dc52d92674 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 22 Aug 2014 11:18:48 +0200 Subject: [PATCH 126/272] ALSA: pcm: Fix the silence data for DSD formats Right now we set 0 as the silence data for DSD_U8 and DSD_U16 formats, but this is actually wrong. 0 is rather the most negative value. Alternatively, we may take the repeating 0x69 pattern like ffmpeg deploys. Reference: https://ffmpeg.org/pipermail/ffmpeg-cvslog/2014-April/076427.html Suggested-by: Alexander E. Patrakov Signed-off-by: Takashi Iwai --- sound/core/pcm_misc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c index 4560ca0e5651..2c6fd80e0bd1 100644 --- a/sound/core/pcm_misc.c +++ b/sound/core/pcm_misc.c @@ -142,11 +142,11 @@ static struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = { }, [SNDRV_PCM_FORMAT_DSD_U8] = { .width = 8, .phys = 8, .le = 1, .signd = 0, - .silence = {}, + .silence = { 0x69 }, }, [SNDRV_PCM_FORMAT_DSD_U16_LE] = { .width = 16, .phys = 16, .le = 1, .signd = 0, - .silence = {}, + .silence = { 0x69, 0x69 }, }, /* FIXME: the following three formats are not defined properly yet */ [SNDRV_PCM_FORMAT_MPEG] = { From e0b760ff71be168d4e623f7c3612e98902ab93e9 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 22 Aug 2014 09:58:22 -0400 Subject: [PATCH 127/272] locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease The argument to locks_unlink_lock can't be just any pointer to a pointer. It must be a pointer to the fl_next field in the previous lock in the list. Cc: # v3.15+ Signed-off-by: Jeff Layton Reviewed-by: Christoph Hellwig --- fs/locks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/locks.c b/fs/locks.c index cb66fb05ad4a..bb08857f90b5 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1619,7 +1619,7 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp smp_mb(); error = check_conflicting_open(dentry, arg); if (error) - locks_unlink_lock(flp); + locks_unlink_lock(before); out: if (is_deleg) mutex_unlock(&inode->i_mutex); From 6f4a16266fb3e58cd3e200eab51d2220ef92d604 Mon Sep 17 00:00:00 2001 From: Tony Battersby Date: Fri, 22 Aug 2014 15:53:39 -0400 Subject: [PATCH 128/272] scsi-mq: fix requests that use a separate CDB buffer This patch fixes code such as the following with scsi-mq enabled: rq = blk_get_request(...); blk_rq_set_block_pc(rq); rq->cmd = my_cmd_buffer; /* separate CDB buffer */ blk_execute_rq_nowait(...); Code like this appears in e.g. sg_start_req() in drivers/scsi/sg.c (for large CDBs only). Without this patch, scsi_mq_prep_fn() will set rq->cmd back to rq->__cmd, causing the wrong CDB to be sent to the device. Signed-off-by: Tony Battersby Signed-off-by: Jens Axboe --- block/blk-core.c | 1 - block/blk-mq.c | 2 ++ drivers/scsi/scsi_lib.c | 1 - 3 files changed, 2 insertions(+), 2 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index c359d72e9d76..bf930f481d43 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1252,7 +1252,6 @@ void blk_rq_set_block_pc(struct request *rq) rq->__sector = (sector_t) -1; rq->bio = rq->biotail = NULL; memset(rq->__cmd, 0, sizeof(rq->__cmd)); - rq->cmd = rq->__cmd; } EXPORT_SYMBOL(blk_rq_set_block_pc); diff --git a/block/blk-mq.c b/block/blk-mq.c index 7950f8d7c1bb..4aac82615a46 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -176,6 +176,8 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx, /* tag was already set */ rq->errors = 0; + rq->cmd = rq->__cmd; + rq->extra_len = 0; rq->sense_len = 0; rq->resid_len = 0; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 9c44392b748f..d86808f051e0 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1808,7 +1808,6 @@ static int scsi_mq_prep_fn(struct request *req) cmd->tag = req->tag; - req->cmd = req->__cmd; cmd->cmnd = req->cmd; cmd->prot_op = SCSI_PROT_NORMAL; From 2ba136daa3ae1e881c9f586f283fcaa164767dce Mon Sep 17 00:00:00 2001 From: Tony Battersby Date: Fri, 22 Aug 2014 15:53:35 -0400 Subject: [PATCH 129/272] fix regression in SCSI_IOCTL_SEND_COMMAND blk_rq_set_block_pc() memsets rq->cmd to 0, so it should come immediately after blk_get_request() to avoid overwriting the user-supplied CDB. Also check for failure to allocate rq. Fixes: f27b087b81b7 ("block: add blk_rq_set_block_pc()") Cc: # 3.16.x Signed-off-by: Tony Battersby Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 1d78e6cf9d61..5dd477bfb4bc 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -456,6 +456,11 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, } rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT); + if (!rq) { + err = -ENOMEM; + goto error; + } + blk_rq_set_block_pc(rq); cmdlen = COMMAND_SIZE(opcode); @@ -509,7 +514,6 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, memset(sense, 0, sizeof(sense)); rq->sense = sense; rq->sense_len = 0; - blk_rq_set_block_pc(rq); blk_execute_rq(q, disk, rq, 0); @@ -529,7 +533,8 @@ out: error: kfree(buffer); - blk_put_request(rq); + if (rq) + blk_put_request(rq); return err; } EXPORT_SYMBOL_GPL(sg_scsi_ioctl); From 36de928641ee48b2078d3fe9514242aaa2f92013 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 23 Aug 2014 17:47:19 -0400 Subject: [PATCH 130/272] ext4: propagate errors up to ext4_find_entry()'s callers If we run into some kind of error, such as ENOMEM, while calling ext4_getblk() or ext4_dx_find_entry(), we need to make sure this error gets propagated up to ext4_find_entry() and then to its callers. This way, transient errors such as ENOMEM can get propagated to the VFS. This is important so that the system calls return the appropriate error, and also so that in the case of ext4_lookup(), we return an error instead of a NULL inode, since that will result in a negative dentry cache entry that will stick around long past the OOM condition which caused a transient ENOMEM error. Google-Bug-Id: #17142205 Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/ext4.h | 2 +- fs/ext4/namei.c | 35 +++++++++++++++++++++++++++++++++-- 2 files changed, 34 insertions(+), 3 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 5b19760b1de5..4d95c3301775 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1825,7 +1825,7 @@ ext4_group_first_block_no(struct super_block *sb, ext4_group_t group_no) /* * Special error return code only used by dx_probe() and its callers. */ -#define ERR_BAD_DX_DIR -75000 +#define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1)) /* * Timeout and state flag for lazy initialization inode thread. diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index b147a67baa0d..ae7088b446d1 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1227,7 +1227,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, buffer */ int num = 0; ext4_lblk_t nblocks; - int i, err; + int i, err = 0; int namelen; *res_dir = NULL; @@ -1264,7 +1264,11 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, * return. Otherwise, fall back to doing a search the * old fashioned way. */ - if (bh || (err != ERR_BAD_DX_DIR)) + if (err == -ENOENT) + return NULL; + if (err && err != ERR_BAD_DX_DIR) + return ERR_PTR(err); + if (bh) return bh; dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, " "falling back\n")); @@ -1295,6 +1299,11 @@ restart: } num++; bh = ext4_getblk(NULL, dir, b++, 0, &err); + if (unlikely(err)) { + if (ra_max == 0) + return ERR_PTR(err); + break; + } bh_use[ra_max] = bh; if (bh) ll_rw_block(READ | REQ_META | REQ_PRIO, @@ -1417,6 +1426,8 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi return ERR_PTR(-ENAMETOOLONG); bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return (struct dentry *) bh; inode = NULL; if (bh) { __u32 ino = le32_to_cpu(de->inode); @@ -1450,6 +1461,8 @@ struct dentry *ext4_get_parent(struct dentry *child) struct buffer_head *bh; bh = ext4_find_entry(child->d_inode, &dotdot, &de, NULL); + if (IS_ERR(bh)) + return (struct dentry *) bh; if (!bh) return ERR_PTR(-ENOENT); ino = le32_to_cpu(de->inode); @@ -2727,6 +2740,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) retval = -ENOENT; bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (!bh) goto end_rmdir; @@ -2794,6 +2809,8 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) retval = -ENOENT; bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (!bh) goto end_unlink; @@ -3121,6 +3138,8 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir, struct ext4_dir_entry_2 *de; bh = ext4_find_entry(dir, d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (bh) { retval = ext4_delete_entry(handle, dir, de, bh); brelse(bh); @@ -3202,6 +3221,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, dquot_initialize(new.inode); old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL); + if (IS_ERR(old.bh)) + return PTR_ERR(old.bh); /* * Check for inode number is _not_ due to possible IO errors. * We might rmdir the source, keep it as pwd of some process @@ -3214,6 +3235,10 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, &new.de, &new.inlined); + if (IS_ERR(new.bh)) { + retval = PTR_ERR(new.bh); + goto end_rename; + } if (new.bh) { if (!new.inode) { brelse(new.bh); @@ -3330,6 +3355,8 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, &old.inlined); + if (IS_ERR(old.bh)) + return PTR_ERR(old.bh); /* * Check for inode number is _not_ due to possible IO errors. * We might rmdir the source, keep it as pwd of some process @@ -3342,6 +3369,10 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, &new.de, &new.inlined); + if (IS_ERR(new.bh)) { + retval = PTR_ERR(new.bh); + goto end_rename; + } /* RENAME_EXCHANGE case: old *and* new must both exist */ if (!new.bh || le32_to_cpu(new.de->inode) != new.inode->i_ino) From c99d1e6e83b06744c75d9f5e491ed495a7086b7b Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 23 Aug 2014 17:47:28 -0400 Subject: [PATCH 131/272] ext4: fix BUG_ON in mb_free_blocks() If we suffer a block allocation failure (for example due to a memory allocation failure), it's possible that we will call ext4_discard_allocated_blocks() before we've actually allocated any blocks. In that case, fe_len and fe_start in ac->ac_f_ex will still be zero, and this will result in mb_free_blocks(inode, e4b, 0, 0) triggering the BUG_ON on mb_free_blocks(): BUG_ON(last >= (sb->s_blocksize << 3)); Fix this by bailing out of ext4_discard_allocated_blocks() if fs_len is zero. Also fix a missing ext4_mb_unload_buddy() call in ext4_discard_allocated_blocks(). Google-Bug-Id: 16844242 Fixes: 86f0afd463215fc3e58020493482faa4ac3a4d69 Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/mballoc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 956027711faf..8b0f9ef517d6 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1412,6 +1412,8 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, int last = first + count - 1; struct super_block *sb = e4b->bd_sb; + if (WARN_ON(count == 0)) + return; BUG_ON(last >= (sb->s_blocksize << 3)); assert_spin_locked(ext4_group_lock_ptr(sb, e4b->bd_group)); /* Don't bother if the block group is corrupt. */ @@ -3221,6 +3223,8 @@ static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) int err; if (pa == NULL) { + if (ac->ac_f_ex.fe_len == 0) + return; err = ext4_mb_load_buddy(ac->ac_sb, ac->ac_f_ex.fe_group, &e4b); if (err) { /* @@ -3235,6 +3239,7 @@ static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) mb_free_blocks(ac->ac_inode, &e4b, ac->ac_f_ex.fe_start, ac->ac_f_ex.fe_len); ext4_unlock_group(ac->ac_sb, ac->ac_f_ex.fe_group); + ext4_mb_unload_buddy(&e4b); return; } if (pa->pa_type == MB_INODE_PA) From 4631dbf677ded0419fee35ca7408285dabfaef1a Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Sat, 23 Aug 2014 17:48:28 -0400 Subject: [PATCH 132/272] ext4: move i_size,i_disksize update routines to helper function Cc: stable@vger.kernel.org # needed for bug fix patches Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o --- fs/ext4/ext4.h | 16 ++++++++++++++++ fs/ext4/extents.c | 17 ++++------------- fs/ext4/inode.c | 34 ++++++++-------------------------- 3 files changed, 28 insertions(+), 39 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 4d95c3301775..b0c225cdb52c 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2454,6 +2454,22 @@ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize) up_write(&EXT4_I(inode)->i_data_sem); } +/* Update i_size, i_disksize. Requires i_mutex to avoid races with truncate */ +static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize) +{ + int changed = 0; + + if (newsize > inode->i_size) { + i_size_write(inode, newsize); + changed = 1; + } + if (newsize > EXT4_I(inode)->i_disksize) { + ext4_update_i_disksize(inode, newsize); + changed |= 2; + } + return changed; +} + struct ext4_group_info { unsigned long bb_state; struct rb_root bb_free_root; diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 76c2df382b7d..f0e6934291dd 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4839,12 +4839,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, } inode->i_mtime = inode->i_ctime = ext4_current_time(inode); - if (new_size) { - if (new_size > i_size_read(inode)) - i_size_write(inode, new_size); - if (new_size > EXT4_I(inode)->i_disksize) - ext4_update_i_disksize(inode, new_size); + ext4_update_inode_size(inode, new_size); } else { /* * Mark that we allocate beyond EOF so the subsequent truncate @@ -4886,7 +4882,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) int ret = 0; int flags; ext4_lblk_t lblk; - struct timespec tv; unsigned int blkbits = inode->i_blkbits; /* Return error if mode is not supported */ @@ -4945,15 +4940,11 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (IS_ERR(handle)) goto out; - tv = inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = ext4_current_time(inode); if (new_size) { - if (new_size > i_size_read(inode)) { - i_size_write(inode, new_size); - inode->i_mtime = tv; - } - if (new_size > EXT4_I(inode)->i_disksize) - ext4_update_i_disksize(inode, new_size); + if (ext4_update_inode_size(inode, new_size) & 0x1) + inode->i_mtime = inode->i_ctime; } else { /* * Mark that we allocate beyond EOF so the subsequent truncate diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 367a60c07cf0..b1ddd9352644 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1055,27 +1055,11 @@ static int ext4_write_end(struct file *file, } else copied = block_write_end(file, mapping, pos, len, copied, page, fsdata); - /* - * No need to use i_size_read() here, the i_size - * cannot change under us because we hole i_mutex. - * - * But it's important to update i_size while still holding page lock: + * it's important to update i_size while still holding page lock: * page writeout could otherwise come in and zero beyond i_size. */ - if (pos + copied > inode->i_size) { - i_size_write(inode, pos + copied); - i_size_changed = 1; - } - - if (pos + copied > EXT4_I(inode)->i_disksize) { - /* We need to mark inode dirty even if - * new_i_size is less that inode->i_size - * but greater than i_disksize. (hint delalloc) - */ - ext4_update_i_disksize(inode, (pos + copied)); - i_size_changed = 1; - } + i_size_changed = ext4_update_inode_size(inode, pos + copied); unlock_page(page); page_cache_release(page); @@ -1123,7 +1107,7 @@ static int ext4_journalled_write_end(struct file *file, int ret = 0, ret2; int partial = 0; unsigned from, to; - loff_t new_i_size; + int size_changed = 0; trace_ext4_journalled_write_end(inode, pos, len, copied); from = pos & (PAGE_CACHE_SIZE - 1); @@ -1146,20 +1130,18 @@ static int ext4_journalled_write_end(struct file *file, if (!partial) SetPageUptodate(page); } - new_i_size = pos + copied; - if (new_i_size > inode->i_size) - i_size_write(inode, pos+copied); + size_changed = ext4_update_inode_size(inode, pos + copied); ext4_set_inode_state(inode, EXT4_STATE_JDATA); EXT4_I(inode)->i_datasync_tid = handle->h_transaction->t_tid; - if (new_i_size > EXT4_I(inode)->i_disksize) { - ext4_update_i_disksize(inode, new_i_size); + unlock_page(page); + page_cache_release(page); + + if (size_changed) { ret2 = ext4_mark_inode_dirty(handle, inode); if (!ret) ret = ret2; } - unlock_page(page); - page_cache_release(page); if (pos + len > inode->i_size && ext4_can_truncate(inode)) /* if we have allocated more blocks and copied * less. We will have blocks allocated outside From 9e0af23764344f7f1b68e4eefbe7dc865018b63d Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Fri, 15 Aug 2014 23:36:53 +0800 Subject: [PATCH 133/272] Btrfs: fix task hang under heavy compressed write This has been reported and discussed for a long time, and this hang occurs in both 3.15 and 3.16. Btrfs now migrates to use kernel workqueue, but it introduces this hang problem. Btrfs has a kind of work queued as an ordered way, which means that its ordered_func() must be processed in the way of FIFO, so it usually looks like -- normal_work_helper(arg) work = container_of(arg, struct btrfs_work, normal_work); work->func() <---- (we name it work X) for ordered_work in wq->ordered_list ordered_work->ordered_func() ordered_work->ordered_free() The hang is a rare case, first when we find free space, we get an uncached block group, then we go to read its free space cache inode for free space information, so it will file a readahead request btrfs_readpages() for page that is not in page cache __do_readpage() submit_extent_page() btrfs_submit_bio_hook() btrfs_bio_wq_end_io() submit_bio() end_workqueue_bio() <--(ret by the 1st endio) queue a work(named work Y) for the 2nd also the real endio() So the hang occurs when work Y's work_struct and work X's work_struct happens to share the same address. A bit more explanation, A,B,C -- struct btrfs_work arg -- struct work_struct kthread: worker_thread() pick up a work_struct from @worklist process_one_work(arg) worker->current_work = arg; <-- arg is A->normal_work worker->current_func(arg) normal_work_helper(arg) A = container_of(arg, struct btrfs_work, normal_work); A->func() A->ordered_func() A->ordered_free() <-- A gets freed B->ordered_func() submit_compressed_extents() find_free_extent() load_free_space_inode() ... <-- (the above readhead stack) end_workqueue_bio() btrfs_queue_work(work C) B->ordered_free() As if work A has a high priority in wq->ordered_list and there are more ordered works queued after it, such as B->ordered_func(), its memory could have been freed before normal_work_helper() returns, which means that kernel workqueue code worker_thread() still has worker->current_work pointer to be work A->normal_work's, ie. arg's address. Meanwhile, work C is allocated after work A is freed, work C->normal_work and work A->normal_work are likely to share the same address(I confirmed this with ftrace output, so I'm not just guessing, it's rare though). When another kthread picks up work C->normal_work to process, and finds our kthread is processing it(see find_worker_executing_work()), it'll think work C as a collision and skip then, which ends up nobody processing work C. So the situation is that our kthread is waiting forever on work C. Besides, there're other cases that can lead to deadlock, but the real problem is that all btrfs workqueue shares one work->func, -- normal_work_helper, so this makes each workqueue to have its own helper function, but only a wraper pf normal_work_helper. With this patch, I no long hit the above hang. Signed-off-by: Liu Bo Signed-off-by: Chris Mason --- fs/btrfs/async-thread.c | 44 +++++++++++++++++++++++++++------ fs/btrfs/async-thread.h | 28 ++++++++++++++++++++- fs/btrfs/delayed-inode.c | 4 +-- fs/btrfs/disk-io.c | 53 ++++++++++++++++++++++------------------ fs/btrfs/extent-tree.c | 7 +++--- fs/btrfs/inode.c | 35 +++++++++++++++++--------- fs/btrfs/ordered-data.c | 1 + fs/btrfs/qgroup.c | 1 + fs/btrfs/raid56.c | 9 ++++--- fs/btrfs/reada.c | 3 ++- fs/btrfs/scrub.c | 14 ++++++----- fs/btrfs/volumes.c | 3 ++- 12 files changed, 141 insertions(+), 61 deletions(-) diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c index 5a201d81049c..fbd76ded9a34 100644 --- a/fs/btrfs/async-thread.c +++ b/fs/btrfs/async-thread.c @@ -22,7 +22,6 @@ #include #include #include -#include #include "async-thread.h" #include "ctree.h" @@ -55,8 +54,39 @@ struct btrfs_workqueue { struct __btrfs_workqueue *high; }; -static inline struct __btrfs_workqueue -*__btrfs_alloc_workqueue(const char *name, int flags, int max_active, +static void normal_work_helper(struct btrfs_work *work); + +#define BTRFS_WORK_HELPER(name) \ +void btrfs_##name(struct work_struct *arg) \ +{ \ + struct btrfs_work *work = container_of(arg, struct btrfs_work, \ + normal_work); \ + normal_work_helper(work); \ +} + +BTRFS_WORK_HELPER(worker_helper); +BTRFS_WORK_HELPER(delalloc_helper); +BTRFS_WORK_HELPER(flush_delalloc_helper); +BTRFS_WORK_HELPER(cache_helper); +BTRFS_WORK_HELPER(submit_helper); +BTRFS_WORK_HELPER(fixup_helper); +BTRFS_WORK_HELPER(endio_helper); +BTRFS_WORK_HELPER(endio_meta_helper); +BTRFS_WORK_HELPER(endio_meta_write_helper); +BTRFS_WORK_HELPER(endio_raid56_helper); +BTRFS_WORK_HELPER(rmw_helper); +BTRFS_WORK_HELPER(endio_write_helper); +BTRFS_WORK_HELPER(freespace_write_helper); +BTRFS_WORK_HELPER(delayed_meta_helper); +BTRFS_WORK_HELPER(readahead_helper); +BTRFS_WORK_HELPER(qgroup_rescan_helper); +BTRFS_WORK_HELPER(extent_refs_helper); +BTRFS_WORK_HELPER(scrub_helper); +BTRFS_WORK_HELPER(scrubwrc_helper); +BTRFS_WORK_HELPER(scrubnc_helper); + +static struct __btrfs_workqueue * +__btrfs_alloc_workqueue(const char *name, int flags, int max_active, int thresh) { struct __btrfs_workqueue *ret = kzalloc(sizeof(*ret), GFP_NOFS); @@ -232,13 +262,11 @@ static void run_ordered_work(struct __btrfs_workqueue *wq) spin_unlock_irqrestore(lock, flags); } -static void normal_work_helper(struct work_struct *arg) +static void normal_work_helper(struct btrfs_work *work) { - struct btrfs_work *work; struct __btrfs_workqueue *wq; int need_order = 0; - work = container_of(arg, struct btrfs_work, normal_work); /* * We should not touch things inside work in the following cases: * 1) after work->func() if it has no ordered_free @@ -262,7 +290,7 @@ static void normal_work_helper(struct work_struct *arg) trace_btrfs_all_work_done(work); } -void btrfs_init_work(struct btrfs_work *work, +void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t uniq_func, btrfs_func_t func, btrfs_func_t ordered_func, btrfs_func_t ordered_free) @@ -270,7 +298,7 @@ void btrfs_init_work(struct btrfs_work *work, work->func = func; work->ordered_func = ordered_func; work->ordered_free = ordered_free; - INIT_WORK(&work->normal_work, normal_work_helper); + INIT_WORK(&work->normal_work, uniq_func); INIT_LIST_HEAD(&work->ordered_list); work->flags = 0; } diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h index 9c6b66d15fb0..e9e31c94758f 100644 --- a/fs/btrfs/async-thread.h +++ b/fs/btrfs/async-thread.h @@ -19,12 +19,14 @@ #ifndef __BTRFS_ASYNC_THREAD_ #define __BTRFS_ASYNC_THREAD_ +#include struct btrfs_workqueue; /* Internal use only */ struct __btrfs_workqueue; struct btrfs_work; typedef void (*btrfs_func_t)(struct btrfs_work *arg); +typedef void (*btrfs_work_func_t)(struct work_struct *arg); struct btrfs_work { btrfs_func_t func; @@ -38,11 +40,35 @@ struct btrfs_work { unsigned long flags; }; +#define BTRFS_WORK_HELPER_PROTO(name) \ +void btrfs_##name(struct work_struct *arg) + +BTRFS_WORK_HELPER_PROTO(worker_helper); +BTRFS_WORK_HELPER_PROTO(delalloc_helper); +BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper); +BTRFS_WORK_HELPER_PROTO(cache_helper); +BTRFS_WORK_HELPER_PROTO(submit_helper); +BTRFS_WORK_HELPER_PROTO(fixup_helper); +BTRFS_WORK_HELPER_PROTO(endio_helper); +BTRFS_WORK_HELPER_PROTO(endio_meta_helper); +BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper); +BTRFS_WORK_HELPER_PROTO(endio_raid56_helper); +BTRFS_WORK_HELPER_PROTO(rmw_helper); +BTRFS_WORK_HELPER_PROTO(endio_write_helper); +BTRFS_WORK_HELPER_PROTO(freespace_write_helper); +BTRFS_WORK_HELPER_PROTO(delayed_meta_helper); +BTRFS_WORK_HELPER_PROTO(readahead_helper); +BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper); +BTRFS_WORK_HELPER_PROTO(extent_refs_helper); +BTRFS_WORK_HELPER_PROTO(scrub_helper); +BTRFS_WORK_HELPER_PROTO(scrubwrc_helper); +BTRFS_WORK_HELPER_PROTO(scrubnc_helper); + struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name, int flags, int max_active, int thresh); -void btrfs_init_work(struct btrfs_work *work, +void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper, btrfs_func_t func, btrfs_func_t ordered_func, btrfs_func_t ordered_free); diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index da775bfdebc9..a2e90f855d7d 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -1395,8 +1395,8 @@ static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root, return -ENOMEM; async_work->delayed_root = delayed_root; - btrfs_init_work(&async_work->work, btrfs_async_run_delayed_root, - NULL, NULL); + btrfs_init_work(&async_work->work, btrfs_delayed_meta_helper, + btrfs_async_run_delayed_root, NULL, NULL); async_work->nr = nr; btrfs_queue_work(root->fs_info->delayed_workers, &async_work->work); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index c99a414813c1..a1d36e62179c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -39,7 +39,6 @@ #include "btrfs_inode.h" #include "volumes.h" #include "print-tree.h" -#include "async-thread.h" #include "locking.h" #include "tree-log.h" #include "free-space-cache.h" @@ -693,35 +692,41 @@ static void end_workqueue_bio(struct bio *bio, int err) { struct end_io_wq *end_io_wq = bio->bi_private; struct btrfs_fs_info *fs_info; + struct btrfs_workqueue *wq; + btrfs_work_func_t func; fs_info = end_io_wq->info; end_io_wq->error = err; - btrfs_init_work(&end_io_wq->work, end_workqueue_fn, NULL, NULL); if (bio->bi_rw & REQ_WRITE) { - if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA) - btrfs_queue_work(fs_info->endio_meta_write_workers, - &end_io_wq->work); - else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_FREE_SPACE) - btrfs_queue_work(fs_info->endio_freespace_worker, - &end_io_wq->work); - else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) - btrfs_queue_work(fs_info->endio_raid56_workers, - &end_io_wq->work); - else - btrfs_queue_work(fs_info->endio_write_workers, - &end_io_wq->work); + if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA) { + wq = fs_info->endio_meta_write_workers; + func = btrfs_endio_meta_write_helper; + } else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_FREE_SPACE) { + wq = fs_info->endio_freespace_worker; + func = btrfs_freespace_write_helper; + } else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) { + wq = fs_info->endio_raid56_workers; + func = btrfs_endio_raid56_helper; + } else { + wq = fs_info->endio_write_workers; + func = btrfs_endio_write_helper; + } } else { - if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) - btrfs_queue_work(fs_info->endio_raid56_workers, - &end_io_wq->work); - else if (end_io_wq->metadata) - btrfs_queue_work(fs_info->endio_meta_workers, - &end_io_wq->work); - else - btrfs_queue_work(fs_info->endio_workers, - &end_io_wq->work); + if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) { + wq = fs_info->endio_raid56_workers; + func = btrfs_endio_raid56_helper; + } else if (end_io_wq->metadata) { + wq = fs_info->endio_meta_workers; + func = btrfs_endio_meta_helper; + } else { + wq = fs_info->endio_workers; + func = btrfs_endio_helper; + } } + + btrfs_init_work(&end_io_wq->work, func, end_workqueue_fn, NULL, NULL); + btrfs_queue_work(wq, &end_io_wq->work); } /* @@ -828,7 +833,7 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, async->submit_bio_start = submit_bio_start; async->submit_bio_done = submit_bio_done; - btrfs_init_work(&async->work, run_one_async_start, + btrfs_init_work(&async->work, btrfs_worker_helper, run_one_async_start, run_one_async_done, run_one_async_free); async->bio_flags = bio_flags; diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 5524434da059..3efe1c3877bf 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -552,7 +552,8 @@ static int cache_block_group(struct btrfs_block_group_cache *cache, caching_ctl->block_group = cache; caching_ctl->progress = cache->key.objectid; atomic_set(&caching_ctl->count, 1); - btrfs_init_work(&caching_ctl->work, caching_thread, NULL, NULL); + btrfs_init_work(&caching_ctl->work, btrfs_cache_helper, + caching_thread, NULL, NULL); spin_lock(&cache->lock); /* @@ -2749,8 +2750,8 @@ int btrfs_async_run_delayed_refs(struct btrfs_root *root, async->sync = 0; init_completion(&async->wait); - btrfs_init_work(&async->work, delayed_ref_async_start, - NULL, NULL); + btrfs_init_work(&async->work, btrfs_extent_refs_helper, + delayed_ref_async_start, NULL, NULL); btrfs_queue_work(root->fs_info->extent_workers, &async->work); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index ae98df67950f..3d020d6d9ace 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1096,8 +1096,10 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, async_cow->end = cur_end; INIT_LIST_HEAD(&async_cow->extents); - btrfs_init_work(&async_cow->work, async_cow_start, - async_cow_submit, async_cow_free); + btrfs_init_work(&async_cow->work, + btrfs_delalloc_helper, + async_cow_start, async_cow_submit, + async_cow_free); nr_pages = (cur_end - start + PAGE_CACHE_SIZE) >> PAGE_CACHE_SHIFT; @@ -1881,7 +1883,8 @@ static int btrfs_writepage_start_hook(struct page *page, u64 start, u64 end) SetPageChecked(page); page_cache_get(page); - btrfs_init_work(&fixup->work, btrfs_writepage_fixup_worker, NULL, NULL); + btrfs_init_work(&fixup->work, btrfs_fixup_helper, + btrfs_writepage_fixup_worker, NULL, NULL); fixup->page = page; btrfs_queue_work(root->fs_info->fixup_workers, &fixup->work); return -EBUSY; @@ -2822,7 +2825,8 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, struct inode *inode = page->mapping->host; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_ordered_extent *ordered_extent = NULL; - struct btrfs_workqueue *workers; + struct btrfs_workqueue *wq; + btrfs_work_func_t func; trace_btrfs_writepage_end_io_hook(page, start, end, uptodate); @@ -2831,13 +2835,17 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, end - start + 1, uptodate)) return 0; - btrfs_init_work(&ordered_extent->work, finish_ordered_fn, NULL, NULL); + if (btrfs_is_free_space_inode(inode)) { + wq = root->fs_info->endio_freespace_worker; + func = btrfs_freespace_write_helper; + } else { + wq = root->fs_info->endio_write_workers; + func = btrfs_endio_write_helper; + } - if (btrfs_is_free_space_inode(inode)) - workers = root->fs_info->endio_freespace_worker; - else - workers = root->fs_info->endio_write_workers; - btrfs_queue_work(workers, &ordered_extent->work); + btrfs_init_work(&ordered_extent->work, func, finish_ordered_fn, NULL, + NULL); + btrfs_queue_work(wq, &ordered_extent->work); return 0; } @@ -7208,7 +7216,8 @@ again: if (!ret) goto out_test; - btrfs_init_work(&ordered->work, finish_ordered_fn, NULL, NULL); + btrfs_init_work(&ordered->work, btrfs_endio_write_helper, + finish_ordered_fn, NULL, NULL); btrfs_queue_work(root->fs_info->endio_write_workers, &ordered->work); out_test: @@ -8535,7 +8544,9 @@ struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, work->inode = inode; work->wait = wait; work->delay_iput = delay_iput; - btrfs_init_work(&work->work, btrfs_run_delalloc_work, NULL, NULL); + WARN_ON_ONCE(!inode); + btrfs_init_work(&work->work, btrfs_flush_delalloc_helper, + btrfs_run_delalloc_work, NULL, NULL); return work; } diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 963895c1f801..ac734ec4cc20 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -615,6 +615,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr) spin_unlock(&root->ordered_extent_lock); btrfs_init_work(&ordered->flush_work, + btrfs_flush_delalloc_helper, btrfs_run_ordered_extent_work, NULL, NULL); list_add_tail(&ordered->work_list, &works); btrfs_queue_work(root->fs_info->flush_workers, diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 8abe45524de9..ded5c601d916 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2720,6 +2720,7 @@ qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid, memset(&fs_info->qgroup_rescan_work, 0, sizeof(fs_info->qgroup_rescan_work)); btrfs_init_work(&fs_info->qgroup_rescan_work, + btrfs_qgroup_rescan_helper, btrfs_qgroup_rescan_worker, NULL, NULL); if (ret) { diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 4a88f073fdd7..0a6b6e4bcbb9 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1416,7 +1416,8 @@ cleanup: static void async_rmw_stripe(struct btrfs_raid_bio *rbio) { - btrfs_init_work(&rbio->work, rmw_work, NULL, NULL); + btrfs_init_work(&rbio->work, btrfs_rmw_helper, + rmw_work, NULL, NULL); btrfs_queue_work(rbio->fs_info->rmw_workers, &rbio->work); @@ -1424,7 +1425,8 @@ static void async_rmw_stripe(struct btrfs_raid_bio *rbio) static void async_read_rebuild(struct btrfs_raid_bio *rbio) { - btrfs_init_work(&rbio->work, read_rebuild_work, NULL, NULL); + btrfs_init_work(&rbio->work, btrfs_rmw_helper, + read_rebuild_work, NULL, NULL); btrfs_queue_work(rbio->fs_info->rmw_workers, &rbio->work); @@ -1665,7 +1667,8 @@ static void btrfs_raid_unplug(struct blk_plug_cb *cb, bool from_schedule) plug = container_of(cb, struct btrfs_plug_cb, cb); if (from_schedule) { - btrfs_init_work(&plug->work, unplug_work, NULL, NULL); + btrfs_init_work(&plug->work, btrfs_rmw_helper, + unplug_work, NULL, NULL); btrfs_queue_work(plug->info->rmw_workers, &plug->work); return; diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 09230cf3a244..20408c6b665a 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -798,7 +798,8 @@ static void reada_start_machine(struct btrfs_fs_info *fs_info) /* FIXME we cannot handle this properly right now */ BUG(); } - btrfs_init_work(&rmw->work, reada_start_machine_worker, NULL, NULL); + btrfs_init_work(&rmw->work, btrfs_readahead_helper, + reada_start_machine_worker, NULL, NULL); rmw->fs_info = fs_info; btrfs_queue_work(fs_info->readahead_workers, &rmw->work); diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 23d3f6e6a482..f4a41f37be22 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -428,8 +428,8 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) sbio->index = i; sbio->sctx = sctx; sbio->page_count = 0; - btrfs_init_work(&sbio->work, scrub_bio_end_io_worker, - NULL, NULL); + btrfs_init_work(&sbio->work, btrfs_scrub_helper, + scrub_bio_end_io_worker, NULL, NULL); if (i != SCRUB_BIOS_PER_SCTX - 1) sctx->bios[i]->next_free = i + 1; @@ -999,8 +999,8 @@ nodatasum_case: fixup_nodatasum->root = fs_info->extent_root; fixup_nodatasum->mirror_num = failed_mirror_index + 1; scrub_pending_trans_workers_inc(sctx); - btrfs_init_work(&fixup_nodatasum->work, scrub_fixup_nodatasum, - NULL, NULL); + btrfs_init_work(&fixup_nodatasum->work, btrfs_scrub_helper, + scrub_fixup_nodatasum, NULL, NULL); btrfs_queue_work(fs_info->scrub_workers, &fixup_nodatasum->work); goto out; @@ -1616,7 +1616,8 @@ static void scrub_wr_bio_end_io(struct bio *bio, int err) sbio->err = err; sbio->bio = bio; - btrfs_init_work(&sbio->work, scrub_wr_bio_end_io_worker, NULL, NULL); + btrfs_init_work(&sbio->work, btrfs_scrubwrc_helper, + scrub_wr_bio_end_io_worker, NULL, NULL); btrfs_queue_work(fs_info->scrub_wr_completion_workers, &sbio->work); } @@ -3214,7 +3215,8 @@ static int copy_nocow_pages(struct scrub_ctx *sctx, u64 logical, u64 len, nocow_ctx->len = len; nocow_ctx->mirror_num = mirror_num; nocow_ctx->physical_for_dev_replace = physical_for_dev_replace; - btrfs_init_work(&nocow_ctx->work, copy_nocow_pages_worker, NULL, NULL); + btrfs_init_work(&nocow_ctx->work, btrfs_scrubnc_helper, + copy_nocow_pages_worker, NULL, NULL); INIT_LIST_HEAD(&nocow_ctx->inodes); btrfs_queue_work(fs_info->scrub_nocow_workers, &nocow_ctx->work); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 9d4ce53d7569..340a92d08e84 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5854,7 +5854,8 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info, else generate_random_uuid(dev->uuid); - btrfs_init_work(&dev->work, pending_bios_fn, NULL, NULL); + btrfs_init_work(&dev->work, btrfs_submit_helper, + pending_bios_fn, NULL, NULL); return dev; } From 6817ae225cd650fb1c3295d769298c38b1eba818 Mon Sep 17 00:00:00 2001 From: James Forshaw Date: Sat, 23 Aug 2014 14:39:48 -0700 Subject: [PATCH 134/272] USB: whiteheat: Added bounds checking for bulk command response This patch fixes a potential security issue in the whiteheat USB driver which might allow a local attacker to cause kernel memory corrpution. This is due to an unchecked memcpy into a fixed size buffer (of 64 bytes). On EHCI and XHCI busses it's possible to craft responses greater than 64 bytes leading a buffer overflow. Signed-off-by: James Forshaw Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/whiteheat.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index e62f2dff8b7d..6c3734d2b45a 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -514,6 +514,10 @@ static void command_port_read_callback(struct urb *urb) dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__); return; } + if (!urb->actual_length) { + dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__); + return; + } if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status); if (status != -ENOENT) @@ -534,7 +538,8 @@ static void command_port_read_callback(struct urb *urb) /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ dev_dbg(&urb->dev->dev, "%s - event received\n", __func__); - } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { + } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) && + (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) { memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); command_info->command_finished = WHITEHEAT_CMD_COMPLETE; From 5abfe85c1d4694d5d4bbd13ecc166262b937adf0 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 22 Aug 2014 16:16:05 -0400 Subject: [PATCH 135/272] HID: logitech-dj: prevent false errors to be shown Commit "HID: logitech: perform bounds checking on device_id early enough" unfortunately leaks some errors to dmesg which are not real ones: - if the report is not a DJ one, then there is not point in checking the device_id - the receiver (index 0) can also receive some notifications which can be safely ignored given the current implementation Move out the test regarding the report_id and also discards printing errors when the receiver got notified. Fixes: ad3e14d7c5268c2e24477c6ef54bbdf88add5d36 Cc: stable@vger.kernel.org Reported-and-tested-by: Markus Trippelsdorf Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-logitech-dj.c | 43 ++++++++++++++++++++--------------- drivers/hid/hid-logitech-dj.h | 1 + 2 files changed, 26 insertions(+), 18 deletions(-) diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c index b7ba82960c79..9bf8637747a5 100644 --- a/drivers/hid/hid-logitech-dj.c +++ b/drivers/hid/hid-logitech-dj.c @@ -656,7 +656,6 @@ static int logi_dj_raw_event(struct hid_device *hdev, struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev); struct dj_report *dj_report = (struct dj_report *) data; unsigned long flags; - bool report_processed = false; dbg_hid("%s, size:%d\n", __func__, size); @@ -683,34 +682,42 @@ static int logi_dj_raw_event(struct hid_device *hdev, * device (via hid_input_report() ) and return 1 so hid-core does not do * anything else with it. */ + + /* case 1) */ + if (data[0] != REPORT_ID_DJ_SHORT) + return false; + if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) || (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) { - dev_err(&hdev->dev, "%s: invalid device index:%d\n", + /* + * Device index is wrong, bail out. + * This driver can ignore safely the receiver notifications, + * so ignore those reports too. + */ + if (dj_report->device_index != DJ_RECEIVER_INDEX) + dev_err(&hdev->dev, "%s: invalid device index:%d\n", __func__, dj_report->device_index); return false; } spin_lock_irqsave(&djrcv_dev->lock, flags); - if (dj_report->report_id == REPORT_ID_DJ_SHORT) { - switch (dj_report->report_type) { - case REPORT_TYPE_NOTIF_DEVICE_PAIRED: - case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED: - logi_dj_recv_queue_notification(djrcv_dev, dj_report); - break; - case REPORT_TYPE_NOTIF_CONNECTION_STATUS: - if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] == - STATUS_LINKLOSS) { - logi_dj_recv_forward_null_report(djrcv_dev, dj_report); - } - break; - default: - logi_dj_recv_forward_report(djrcv_dev, dj_report); + switch (dj_report->report_type) { + case REPORT_TYPE_NOTIF_DEVICE_PAIRED: + case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED: + logi_dj_recv_queue_notification(djrcv_dev, dj_report); + break; + case REPORT_TYPE_NOTIF_CONNECTION_STATUS: + if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] == + STATUS_LINKLOSS) { + logi_dj_recv_forward_null_report(djrcv_dev, dj_report); } - report_processed = true; + break; + default: + logi_dj_recv_forward_report(djrcv_dev, dj_report); } spin_unlock_irqrestore(&djrcv_dev->lock, flags); - return report_processed; + return true; } static int logi_dj_probe(struct hid_device *hdev, diff --git a/drivers/hid/hid-logitech-dj.h b/drivers/hid/hid-logitech-dj.h index 4a4000340ce1..daeb0aa4bee9 100644 --- a/drivers/hid/hid-logitech-dj.h +++ b/drivers/hid/hid-logitech-dj.h @@ -27,6 +27,7 @@ #define DJ_MAX_PAIRED_DEVICES 6 #define DJ_MAX_NUMBER_NOTIFICATIONS 8 +#define DJ_RECEIVER_INDEX 0 #define DJ_DEVICE_INDEX_MIN 1 #define DJ_DEVICE_INDEX_MAX 6 From f9908c178c273728166ccc21544821a42015f81d Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 23 Aug 2014 10:11:26 +0100 Subject: [PATCH 136/272] ARM: dts: hummingboard/cubox-i: add USB OC pinctrl configuration Hummingboard has no over current hardware, so disable the over current detection for both ports. Cubox-i has over current hardware, so appropriately configure this. Signed-off-by: Russell King Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6dl-hummingboard.dts | 2 ++ arch/arm/boot/dts/imx6qdl-cubox-i.dtsi | 17 +++++++++++++---- 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/imx6dl-hummingboard.dts b/arch/arm/boot/dts/imx6dl-hummingboard.dts index c8e51dd41b8f..d1c892e28296 100644 --- a/arch/arm/boot/dts/imx6dl-hummingboard.dts +++ b/arch/arm/boot/dts/imx6dl-hummingboard.dts @@ -181,11 +181,13 @@ }; &usbh1 { + disable-over-current; vbus-supply = <®_usbh1_vbus>; status = "okay"; }; &usbotg { + disable-over-current; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_hummingboard_usbotg_id>; vbus-supply = <®_usbotg_vbus>; diff --git a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi index e8e781656b3f..298d0fdf8ebe 100644 --- a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi +++ b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi @@ -130,16 +130,23 @@ fsl,pins = ; }; + pinctrl_cubox_i_usbh1: cubox-i-usbh1 { + fsl,pins = ; + }; + pinctrl_cubox_i_usbh1_vbus: cubox-i-usbh1-vbus { fsl,pins = ; }; - pinctrl_cubox_i_usbotg_id: cubox-i-usbotg-id { + pinctrl_cubox_i_usbotg: cubox-i-usbotg { /* - * The Cubox-i pulls this low, but as it's pointless + * The Cubox-i pulls ID low, but as it's pointless * leaving it as a pull-up, even if it is just 10uA. */ - fsl,pins = ; + fsl,pins = < + MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059 + MX6QDL_PAD_KEY_COL4__USB_OTG_OC 0x1b0b0 + >; }; pinctrl_cubox_i_usbotg_vbus: cubox-i-usbotg-vbus { @@ -173,13 +180,15 @@ }; &usbh1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_cubox_i_usbh1>; vbus-supply = <®_usbh1_vbus>; status = "okay"; }; &usbotg { pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_cubox_i_usbotg_id>; + pinctrl-0 = <&pinctrl_cubox_i_usbotg>; vbus-supply = <®_usbotg_vbus>; status = "okay"; }; From 962af8612148dad1927ab74707a27cc400103c86 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 23 Aug 2014 10:11:31 +0100 Subject: [PATCH 137/272] ARM: dts: hummingboard/cubox-i: change SPDIF output to be more descriptive Signed-off-by: Russell King Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6dl-hummingboard.dts | 2 +- arch/arm/boot/dts/imx6qdl-cubox-i.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx6dl-hummingboard.dts b/arch/arm/boot/dts/imx6dl-hummingboard.dts index d1c892e28296..71598546087f 100644 --- a/arch/arm/boot/dts/imx6dl-hummingboard.dts +++ b/arch/arm/boot/dts/imx6dl-hummingboard.dts @@ -58,7 +58,7 @@ sound-spdif { compatible = "fsl,imx-audio-spdif"; - model = "imx-spdif"; + model = "On-board SPDIF"; /* IMX6 doesn't implement this yet */ spdif-controller = <&spdif>; spdif-out; diff --git a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi index 298d0fdf8ebe..6a524ca011e7 100644 --- a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi +++ b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi @@ -61,7 +61,7 @@ sound-spdif { compatible = "fsl,imx-audio-spdif"; - model = "imx-spdif"; + model = "Integrated SPDIF"; /* IMX6 doesn't implement this yet */ spdif-controller = <&spdif>; spdif-out; From 588b48caf65c4a92af567948ec0025065e749ddf Mon Sep 17 00:00:00 2001 From: Valentina Manea Date: Wed, 20 Aug 2014 07:30:59 +0300 Subject: [PATCH 138/272] usbip: move usbip userspace code out of staging At this point, USB/IP userspace code is fully functional and can be moved out of staging. Signed-off-by: Valentina Manea Signed-off-by: Greg Kroah-Hartman --- {drivers/staging/usbip/userspace => tools/usb/usbip}/.gitignore | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/AUTHORS | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/COPYING | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/INSTALL | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/Makefile.am | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/README | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/autogen.sh | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/cleanup.sh | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/configure.ac | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/doc/usbip.8 | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/doc/usbipd.8 | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/Makefile.am | 0 .../staging/usbip/userspace => tools/usb/usbip}/libsrc/list.h | 0 .../staging/usbip/userspace => tools/usb/usbip}/libsrc/names.c | 0 .../staging/usbip/userspace => tools/usb/usbip}/libsrc/names.h | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/sysfs_utils.c | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/sysfs_utils.h | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/usbip_common.c | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/usbip_common.h | 0 .../userspace => tools/usb/usbip}/libsrc/usbip_host_driver.c | 0 .../userspace => tools/usb/usbip}/libsrc/usbip_host_driver.h | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/vhci_driver.c | 0 .../usbip/userspace => tools/usb/usbip}/libsrc/vhci_driver.h | 0 .../staging/usbip/userspace => tools/usb/usbip}/src/Makefile.am | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip.c | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip.h | 0 .../usbip/userspace => tools/usb/usbip}/src/usbip_attach.c | 0 .../staging/usbip/userspace => tools/usb/usbip}/src/usbip_bind.c | 0 .../usbip/userspace => tools/usb/usbip}/src/usbip_detach.c | 0 .../staging/usbip/userspace => tools/usb/usbip}/src/usbip_list.c | 0 .../usbip/userspace => tools/usb/usbip}/src/usbip_network.c | 0 .../usbip/userspace => tools/usb/usbip}/src/usbip_network.h | 0 .../staging/usbip/userspace => tools/usb/usbip}/src/usbip_port.c | 0 .../usbip/userspace => tools/usb/usbip}/src/usbip_unbind.c | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbipd.c | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/src/utils.c | 0 {drivers/staging/usbip/userspace => tools/usb/usbip}/src/utils.h | 0 37 files changed, 0 insertions(+), 0 deletions(-) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/.gitignore (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/AUTHORS (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/COPYING (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/INSTALL (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/Makefile.am (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/README (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/autogen.sh (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/cleanup.sh (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/configure.ac (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/doc/usbip.8 (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/doc/usbipd.8 (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/Makefile.am (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/list.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/names.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/names.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/sysfs_utils.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/sysfs_utils.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/usbip_common.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/usbip_common.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/usbip_host_driver.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/usbip_host_driver.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/vhci_driver.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/libsrc/vhci_driver.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/Makefile.am (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_attach.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_bind.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_detach.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_list.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_network.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_network.h (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_port.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbip_unbind.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/usbipd.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/utils.c (100%) rename {drivers/staging/usbip/userspace => tools/usb/usbip}/src/utils.h (100%) diff --git a/drivers/staging/usbip/userspace/.gitignore b/tools/usb/usbip/.gitignore similarity index 100% rename from drivers/staging/usbip/userspace/.gitignore rename to tools/usb/usbip/.gitignore diff --git a/drivers/staging/usbip/userspace/AUTHORS b/tools/usb/usbip/AUTHORS similarity index 100% rename from drivers/staging/usbip/userspace/AUTHORS rename to tools/usb/usbip/AUTHORS diff --git a/drivers/staging/usbip/userspace/COPYING b/tools/usb/usbip/COPYING similarity index 100% rename from drivers/staging/usbip/userspace/COPYING rename to tools/usb/usbip/COPYING diff --git a/drivers/staging/usbip/userspace/INSTALL b/tools/usb/usbip/INSTALL similarity index 100% rename from drivers/staging/usbip/userspace/INSTALL rename to tools/usb/usbip/INSTALL diff --git a/drivers/staging/usbip/userspace/Makefile.am b/tools/usb/usbip/Makefile.am similarity index 100% rename from drivers/staging/usbip/userspace/Makefile.am rename to tools/usb/usbip/Makefile.am diff --git a/drivers/staging/usbip/userspace/README b/tools/usb/usbip/README similarity index 100% rename from drivers/staging/usbip/userspace/README rename to tools/usb/usbip/README diff --git a/drivers/staging/usbip/userspace/autogen.sh b/tools/usb/usbip/autogen.sh similarity index 100% rename from drivers/staging/usbip/userspace/autogen.sh rename to tools/usb/usbip/autogen.sh diff --git a/drivers/staging/usbip/userspace/cleanup.sh b/tools/usb/usbip/cleanup.sh similarity index 100% rename from drivers/staging/usbip/userspace/cleanup.sh rename to tools/usb/usbip/cleanup.sh diff --git a/drivers/staging/usbip/userspace/configure.ac b/tools/usb/usbip/configure.ac similarity index 100% rename from drivers/staging/usbip/userspace/configure.ac rename to tools/usb/usbip/configure.ac diff --git a/drivers/staging/usbip/userspace/doc/usbip.8 b/tools/usb/usbip/doc/usbip.8 similarity index 100% rename from drivers/staging/usbip/userspace/doc/usbip.8 rename to tools/usb/usbip/doc/usbip.8 diff --git a/drivers/staging/usbip/userspace/doc/usbipd.8 b/tools/usb/usbip/doc/usbipd.8 similarity index 100% rename from drivers/staging/usbip/userspace/doc/usbipd.8 rename to tools/usb/usbip/doc/usbipd.8 diff --git a/drivers/staging/usbip/userspace/libsrc/Makefile.am b/tools/usb/usbip/libsrc/Makefile.am similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/Makefile.am rename to tools/usb/usbip/libsrc/Makefile.am diff --git a/drivers/staging/usbip/userspace/libsrc/list.h b/tools/usb/usbip/libsrc/list.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/list.h rename to tools/usb/usbip/libsrc/list.h diff --git a/drivers/staging/usbip/userspace/libsrc/names.c b/tools/usb/usbip/libsrc/names.c similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/names.c rename to tools/usb/usbip/libsrc/names.c diff --git a/drivers/staging/usbip/userspace/libsrc/names.h b/tools/usb/usbip/libsrc/names.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/names.h rename to tools/usb/usbip/libsrc/names.h diff --git a/drivers/staging/usbip/userspace/libsrc/sysfs_utils.c b/tools/usb/usbip/libsrc/sysfs_utils.c similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/sysfs_utils.c rename to tools/usb/usbip/libsrc/sysfs_utils.c diff --git a/drivers/staging/usbip/userspace/libsrc/sysfs_utils.h b/tools/usb/usbip/libsrc/sysfs_utils.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/sysfs_utils.h rename to tools/usb/usbip/libsrc/sysfs_utils.h diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.c b/tools/usb/usbip/libsrc/usbip_common.c similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/usbip_common.c rename to tools/usb/usbip/libsrc/usbip_common.c diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.h b/tools/usb/usbip/libsrc/usbip_common.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/usbip_common.h rename to tools/usb/usbip/libsrc/usbip_common.h diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.c b/tools/usb/usbip/libsrc/usbip_host_driver.c similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/usbip_host_driver.c rename to tools/usb/usbip/libsrc/usbip_host_driver.c diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.h b/tools/usb/usbip/libsrc/usbip_host_driver.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/usbip_host_driver.h rename to tools/usb/usbip/libsrc/usbip_host_driver.h diff --git a/drivers/staging/usbip/userspace/libsrc/vhci_driver.c b/tools/usb/usbip/libsrc/vhci_driver.c similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/vhci_driver.c rename to tools/usb/usbip/libsrc/vhci_driver.c diff --git a/drivers/staging/usbip/userspace/libsrc/vhci_driver.h b/tools/usb/usbip/libsrc/vhci_driver.h similarity index 100% rename from drivers/staging/usbip/userspace/libsrc/vhci_driver.h rename to tools/usb/usbip/libsrc/vhci_driver.h diff --git a/drivers/staging/usbip/userspace/src/Makefile.am b/tools/usb/usbip/src/Makefile.am similarity index 100% rename from drivers/staging/usbip/userspace/src/Makefile.am rename to tools/usb/usbip/src/Makefile.am diff --git a/drivers/staging/usbip/userspace/src/usbip.c b/tools/usb/usbip/src/usbip.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip.c rename to tools/usb/usbip/src/usbip.c diff --git a/drivers/staging/usbip/userspace/src/usbip.h b/tools/usb/usbip/src/usbip.h similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip.h rename to tools/usb/usbip/src/usbip.h diff --git a/drivers/staging/usbip/userspace/src/usbip_attach.c b/tools/usb/usbip/src/usbip_attach.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_attach.c rename to tools/usb/usbip/src/usbip_attach.c diff --git a/drivers/staging/usbip/userspace/src/usbip_bind.c b/tools/usb/usbip/src/usbip_bind.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_bind.c rename to tools/usb/usbip/src/usbip_bind.c diff --git a/drivers/staging/usbip/userspace/src/usbip_detach.c b/tools/usb/usbip/src/usbip_detach.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_detach.c rename to tools/usb/usbip/src/usbip_detach.c diff --git a/drivers/staging/usbip/userspace/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_list.c rename to tools/usb/usbip/src/usbip_list.c diff --git a/drivers/staging/usbip/userspace/src/usbip_network.c b/tools/usb/usbip/src/usbip_network.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_network.c rename to tools/usb/usbip/src/usbip_network.c diff --git a/drivers/staging/usbip/userspace/src/usbip_network.h b/tools/usb/usbip/src/usbip_network.h similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_network.h rename to tools/usb/usbip/src/usbip_network.h diff --git a/drivers/staging/usbip/userspace/src/usbip_port.c b/tools/usb/usbip/src/usbip_port.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_port.c rename to tools/usb/usbip/src/usbip_port.c diff --git a/drivers/staging/usbip/userspace/src/usbip_unbind.c b/tools/usb/usbip/src/usbip_unbind.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbip_unbind.c rename to tools/usb/usbip/src/usbip_unbind.c diff --git a/drivers/staging/usbip/userspace/src/usbipd.c b/tools/usb/usbip/src/usbipd.c similarity index 100% rename from drivers/staging/usbip/userspace/src/usbipd.c rename to tools/usb/usbip/src/usbipd.c diff --git a/drivers/staging/usbip/userspace/src/utils.c b/tools/usb/usbip/src/utils.c similarity index 100% rename from drivers/staging/usbip/userspace/src/utils.c rename to tools/usb/usbip/src/utils.c diff --git a/drivers/staging/usbip/userspace/src/utils.h b/tools/usb/usbip/src/utils.h similarity index 100% rename from drivers/staging/usbip/userspace/src/utils.h rename to tools/usb/usbip/src/utils.h From 96c2737716d586a218bc795fcb79d2e2b6003081 Mon Sep 17 00:00:00 2001 From: Valentina Manea Date: Wed, 20 Aug 2014 07:31:00 +0300 Subject: [PATCH 139/272] usbip: move usbip kernel code out of staging At this point, USB/IP kernel code is fully functional and can be moved out of staging. Signed-off-by: Valentina Manea Signed-off-by: Greg Kroah-Hartman --- drivers/staging/Kconfig | 2 -- drivers/staging/Makefile | 1 - drivers/usb/Kconfig | 2 ++ drivers/usb/Makefile | 2 ++ drivers/{staging => usb}/usbip/Kconfig | 0 drivers/{staging => usb}/usbip/Makefile | 0 drivers/{staging => usb}/usbip/README | 0 drivers/{staging => usb}/usbip/stub.h | 0 drivers/{staging => usb}/usbip/stub_dev.c | 0 drivers/{staging => usb}/usbip/stub_main.c | 0 drivers/{staging => usb}/usbip/stub_rx.c | 0 drivers/{staging => usb}/usbip/stub_tx.c | 0 drivers/{staging => usb}/usbip/usbip_common.c | 0 drivers/{staging => usb}/usbip/usbip_common.h | 2 +- drivers/{staging => usb}/usbip/usbip_event.c | 0 drivers/{staging => usb}/usbip/usbip_protocol.txt | 0 drivers/{staging => usb}/usbip/vhci.h | 0 drivers/{staging => usb}/usbip/vhci_hcd.c | 0 drivers/{staging => usb}/usbip/vhci_rx.c | 0 drivers/{staging => usb}/usbip/vhci_sysfs.c | 0 drivers/{staging => usb}/usbip/vhci_tx.c | 0 {drivers/staging/usbip/uapi => include/uapi/linux}/usbip.h | 0 22 files changed, 5 insertions(+), 4 deletions(-) rename drivers/{staging => usb}/usbip/Kconfig (100%) rename drivers/{staging => usb}/usbip/Makefile (100%) rename drivers/{staging => usb}/usbip/README (100%) rename drivers/{staging => usb}/usbip/stub.h (100%) rename drivers/{staging => usb}/usbip/stub_dev.c (100%) rename drivers/{staging => usb}/usbip/stub_main.c (100%) rename drivers/{staging => usb}/usbip/stub_rx.c (100%) rename drivers/{staging => usb}/usbip/stub_tx.c (100%) rename drivers/{staging => usb}/usbip/usbip_common.c (100%) rename drivers/{staging => usb}/usbip/usbip_common.h (99%) rename drivers/{staging => usb}/usbip/usbip_event.c (100%) rename drivers/{staging => usb}/usbip/usbip_protocol.txt (100%) rename drivers/{staging => usb}/usbip/vhci.h (100%) rename drivers/{staging => usb}/usbip/vhci_hcd.c (100%) rename drivers/{staging => usb}/usbip/vhci_rx.c (100%) rename drivers/{staging => usb}/usbip/vhci_sysfs.c (100%) rename drivers/{staging => usb}/usbip/vhci_tx.c (100%) rename {drivers/staging/usbip/uapi => include/uapi/linux}/usbip.h (100%) diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 2c486ea6236b..35b494f5667f 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -28,8 +28,6 @@ source "drivers/staging/et131x/Kconfig" source "drivers/staging/slicoss/Kconfig" -source "drivers/staging/usbip/Kconfig" - source "drivers/staging/wlan-ng/Kconfig" source "drivers/staging/comedi/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 1e1a3a10faf7..e66a5dbd9b02 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -6,7 +6,6 @@ obj-$(CONFIG_STAGING) += staging.o obj-y += media/ obj-$(CONFIG_ET131X) += et131x/ obj-$(CONFIG_SLICOSS) += slicoss/ -obj-$(CONFIG_USBIP_CORE) += usbip/ obj-$(CONFIG_PRISM2_USB) += wlan-ng/ obj-$(CONFIG_COMEDI) += comedi/ obj-$(CONFIG_FB_OLPC_DCON) += olpc_dcon/ diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index e0cad4418085..cf1b19bca306 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -92,6 +92,8 @@ source "drivers/usb/storage/Kconfig" source "drivers/usb/image/Kconfig" +source "drivers/usb/usbip/Kconfig" + endif source "drivers/usb/musb/Kconfig" diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 3cba892b83a2..d7be71778059 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -60,3 +60,5 @@ obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs/ obj-$(CONFIG_USB_GADGET) += gadget/ obj-$(CONFIG_USB_COMMON) += common/ + +obj-$(CONFIG_USBIP_CORE) += usbip/ diff --git a/drivers/staging/usbip/Kconfig b/drivers/usb/usbip/Kconfig similarity index 100% rename from drivers/staging/usbip/Kconfig rename to drivers/usb/usbip/Kconfig diff --git a/drivers/staging/usbip/Makefile b/drivers/usb/usbip/Makefile similarity index 100% rename from drivers/staging/usbip/Makefile rename to drivers/usb/usbip/Makefile diff --git a/drivers/staging/usbip/README b/drivers/usb/usbip/README similarity index 100% rename from drivers/staging/usbip/README rename to drivers/usb/usbip/README diff --git a/drivers/staging/usbip/stub.h b/drivers/usb/usbip/stub.h similarity index 100% rename from drivers/staging/usbip/stub.h rename to drivers/usb/usbip/stub.h diff --git a/drivers/staging/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c similarity index 100% rename from drivers/staging/usbip/stub_dev.c rename to drivers/usb/usbip/stub_dev.c diff --git a/drivers/staging/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c similarity index 100% rename from drivers/staging/usbip/stub_main.c rename to drivers/usb/usbip/stub_main.c diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c similarity index 100% rename from drivers/staging/usbip/stub_rx.c rename to drivers/usb/usbip/stub_rx.c diff --git a/drivers/staging/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c similarity index 100% rename from drivers/staging/usbip/stub_tx.c rename to drivers/usb/usbip/stub_tx.c diff --git a/drivers/staging/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c similarity index 100% rename from drivers/staging/usbip/usbip_common.c rename to drivers/usb/usbip/usbip_common.c diff --git a/drivers/staging/usbip/usbip_common.h b/drivers/usb/usbip/usbip_common.h similarity index 99% rename from drivers/staging/usbip/usbip_common.h rename to drivers/usb/usbip/usbip_common.h index 4da3866a037d..86b08475c254 100644 --- a/drivers/staging/usbip/usbip_common.h +++ b/drivers/usb/usbip/usbip_common.h @@ -29,7 +29,7 @@ #include #include #include -#include "uapi/usbip.h" +#include #define USBIP_VERSION "1.0.0" diff --git a/drivers/staging/usbip/usbip_event.c b/drivers/usb/usbip/usbip_event.c similarity index 100% rename from drivers/staging/usbip/usbip_event.c rename to drivers/usb/usbip/usbip_event.c diff --git a/drivers/staging/usbip/usbip_protocol.txt b/drivers/usb/usbip/usbip_protocol.txt similarity index 100% rename from drivers/staging/usbip/usbip_protocol.txt rename to drivers/usb/usbip/usbip_protocol.txt diff --git a/drivers/staging/usbip/vhci.h b/drivers/usb/usbip/vhci.h similarity index 100% rename from drivers/staging/usbip/vhci.h rename to drivers/usb/usbip/vhci.h diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c similarity index 100% rename from drivers/staging/usbip/vhci_hcd.c rename to drivers/usb/usbip/vhci_hcd.c diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/usb/usbip/vhci_rx.c similarity index 100% rename from drivers/staging/usbip/vhci_rx.c rename to drivers/usb/usbip/vhci_rx.c diff --git a/drivers/staging/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c similarity index 100% rename from drivers/staging/usbip/vhci_sysfs.c rename to drivers/usb/usbip/vhci_sysfs.c diff --git a/drivers/staging/usbip/vhci_tx.c b/drivers/usb/usbip/vhci_tx.c similarity index 100% rename from drivers/staging/usbip/vhci_tx.c rename to drivers/usb/usbip/vhci_tx.c diff --git a/drivers/staging/usbip/uapi/usbip.h b/include/uapi/linux/usbip.h similarity index 100% rename from drivers/staging/usbip/uapi/usbip.h rename to include/uapi/linux/usbip.h From 3f653c5639500d905815d6cd6964c0de117ba59b Mon Sep 17 00:00:00 2001 From: Valentina Manea Date: Wed, 20 Aug 2014 07:31:01 +0300 Subject: [PATCH 140/272] usbip: remove struct usb_device_id table This was used back when usbip-host was an interface device driver; after the conversion to device driver, the table remained unused. Remove it in order to stop receiving a warning about it. Signed-off-by: Valentina Manea Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/stub_dev.c | 27 --------------------------- 1 file changed, 27 deletions(-) diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c index 51d0c7188738..fac20e0434c0 100644 --- a/drivers/usb/usbip/stub_dev.c +++ b/drivers/usb/usbip/stub_dev.c @@ -25,33 +25,6 @@ #include "usbip_common.h" #include "stub.h" -/* - * Define device IDs here if you want to explicitly limit exportable devices. - * In most cases, wildcard matching will be okay because driver binding can be - * changed dynamically by a userland program. - */ -static struct usb_device_id stub_table[] = { -#if 0 - /* just an example */ - { USB_DEVICE(0x05ac, 0x0301) }, /* Mac 1 button mouse */ - { USB_DEVICE(0x0430, 0x0009) }, /* Plat Home Keyboard */ - { USB_DEVICE(0x059b, 0x0001) }, /* Iomega USB Zip 100 */ - { USB_DEVICE(0x04b3, 0x4427) }, /* IBM USB CD-ROM */ - { USB_DEVICE(0x05a9, 0xa511) }, /* LifeView USB cam */ - { USB_DEVICE(0x55aa, 0x0201) }, /* Imation card reader */ - { USB_DEVICE(0x046d, 0x0870) }, /* Qcam Express(QV-30) */ - { USB_DEVICE(0x04bb, 0x0101) }, /* IO-DATA HD 120GB */ - { USB_DEVICE(0x04bb, 0x0904) }, /* IO-DATA USB-ET/TX */ - { USB_DEVICE(0x04bb, 0x0201) }, /* IO-DATA USB-ET/TX */ - { USB_DEVICE(0x08bb, 0x2702) }, /* ONKYO USB Speaker */ - { USB_DEVICE(0x046d, 0x08b2) }, /* Logicool Qcam 4000 Pro */ -#endif - /* magic for wild card */ - { .driver_info = 1 }, - { 0, } /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, stub_table); - /* * usbip_status shows the status of usbip-host as long as this driver is bound * to the target device. From 563da3a90364fc29cd09bed034162592e591747a Mon Sep 17 00:00:00 2001 From: Valentina Manea Date: Wed, 20 Aug 2014 07:31:02 +0300 Subject: [PATCH 141/272] MAINTAINERS: Add an entry for USB/IP driver This patch adds an entry in MAINTAINERS file for USB/IP driver. Signed-off-by: Valentina Manea Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index aefa94841ff3..76ac03d358aa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9515,6 +9515,14 @@ S: Maintained F: Documentation/usb/ohci.txt F: drivers/usb/host/ohci* +USB OVER IP DRIVER +M: Valentina Manea +M: Shuah Khan +L: linux-usb@vger.kernel.org +S: Maintained +F: drivers/usb/usbip/ +F: tools/usb/usbip/ + USB PEGASUS DRIVER M: Petko Manolov L: linux-usb@vger.kernel.org From a7e69ddb10f72f17556bfe99259ecb10cbcb4b5c Mon Sep 17 00:00:00 2001 From: Mark Date: Tue, 19 Aug 2014 21:45:22 +0100 Subject: [PATCH 142/272] USB: storage: add quirk for Newer Technology uSCSI SCSI-USB converter The uSCSI from Newer Technology is a SCSI-USB converter with USB ID 06ca:2003. Like several other SCSI-USB products, it's a Shuttle Technology OEM device. Without a suitable entry in unusual-devs.h, the converter can only access the (single) device with SCSI ID 0. Copying the entry for device 04e6:0002 allows it to work with devices with other SCSI IDs too. There are currently six entries for Shuttle-developed SCSI-USB devices in unusual-devs.h (grep for euscsi): 04e6:0002 Shuttle eUSCSI Bridge USB_SC_DEVICE, USB_PR_DEVICE 04e6:000b Shuttle eUSCSI Bridge USB_SC_SCSI, USB_PR_BULK 04e6:000c Shuttle eUSCSI Bridge USB_SC_SCSI, USB_PR_BULK 050d:0115 Belkin USB SCSI Adaptor USB_SC_SCSI, USB_PR_BULK 07af:0004 Microtech USB-SCSI-DB25 USB_SC_DEVICE, USB_PR_DEVICE 07af:0005 Microtech USB-SCSI-HD50 USB_SC_DEVICE, USB_PR_DEVICE lsusb -v output for the uSCSI lists bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) This patch adds an entry for the uSCSI to unusual_devs.h. Signed-off-by: Mark Knibbs Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 80a5b366255f..7ef99b2f3aaf 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -922,6 +922,12 @@ UNUSUAL_DEV( 0x069b, 0x3004, 0x0001, 0x0001, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_FIX_CAPACITY ), +UNUSUAL_DEV( 0x06ca, 0x2003, 0x0100, 0x0100, + "Newer Technology", + "uSCSI", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_euscsi_init, + US_FL_SCM_MULT_TARG ), + /* Reported by Adrian Pilchowiec */ UNUSUAL_DEV( 0x071b, 0x3203, 0x0000, 0x0000, "RockChip", From 7cad45eea3849faeb34591b60d16b50d13a38d77 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= Date: Fri, 22 Aug 2014 01:31:20 +0200 Subject: [PATCH 143/272] irq: Export handle_fasteoi_irq MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Export handle_fasteoi_irq to be able to use it in e.g. the Zynq gpio driver since commit 6dd859508336 ("gpio: zynq: Fix IRQ handlers"). This fixes the following link issue: ERROR: "handle_fasteoi_irq" [drivers/gpio/gpio-zynq.ko] undefined! Signed-off-by: Vincent Stehlé Acked-by: Arnd Bergmann Cc: linux-arm-kernel@lists.infradead.org Cc: Vincent Stehle Cc: Lars-Peter Clausen Cc: Linus Walleij Link: http://lkml.kernel.org/r/1408663880-29179-1-git-send-email-vincent.stehle@laposte.net Signed-off-by: Thomas Gleixner --- kernel/irq/chip.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index a2b28a2fd7b1..6223fab9a9d2 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -517,6 +517,7 @@ out: chip->irq_eoi(&desc->irq_data); raw_spin_unlock(&desc->lock); } +EXPORT_SYMBOL_GPL(handle_fasteoi_irq); /** * handle_edge_irq - edge type IRQ handler From 5cbcc35e5bf0eae3c7494ce3efefffc9977827ae Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 5 Aug 2014 08:28:19 +0800 Subject: [PATCH 144/272] usb: ehci: using wIndex + 1 for hub port The roothub's index per controller is from 0, but the hub port index per hub is from 1, this patch fixes "can't find device at roohub" problem for connecting test fixture at roohub when do USB-IF Embedded Host High-Speed Electrical Test. This patch is for v3.12+. Cc: stable@vger.kernel.org Signed-off-by: Peter Chen Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index cc305c71ac3d..6130b7574908 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -1230,7 +1230,7 @@ int ehci_hub_control( if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) { spin_unlock_irqrestore(&ehci->lock, flags); retval = ehset_single_step_set_feature(hcd, - wIndex); + wIndex + 1); spin_lock_irqsave(&ehci->lock, flags); break; } From 9b2667f1f30e91becc3751acd5cffaedcf68e098 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Wed, 20 Aug 2014 12:04:09 +0900 Subject: [PATCH 145/272] usb: dwc2: gadget: Set the default EP max packet value as 8 bytes Set the default EP max packet value as 8 bytes, because in the case of low-speed, 'ep_mps' is not set. Thus, the default value of 'ep_mps' should be considered for the case of low-speed. Signed-off-by: Jingoo Han Acked-by: Paul Zimmerman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2a6f76b0075e..7c9618e916e2 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1901,7 +1901,7 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) { u32 dsts = readl(hsotg->regs + DSTS); - int ep0_mps = 0, ep_mps = 1023; + int ep0_mps = 0, ep_mps = 8; /* * This should signal the finish of the enumeration phase From 73ab4232388b7a08f17c8d08141ff2099fa0b161 Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Tue, 12 Aug 2014 18:07:56 +0300 Subject: [PATCH 146/272] mei: reset client state on queued connect request If connect request is queued (e.g. device in pg) set client state to initializing, thus avoid preliminary exit in wait if current state is disconnected. This is regression from: commit e4d8270e604c3202131bac607969605ac397b893 Author: Alexander Usyskin mei: set connecting state just upon connection request is sent to the fw CC: stable@vger.kernel.org # 3.15+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/client.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 324e1de93687..2da05c0e113d 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -601,6 +601,7 @@ int mei_cl_connect(struct mei_cl *cl, struct file *file) cl->timer_count = MEI_CONNECT_TIMEOUT; list_add_tail(&cb->list, &dev->ctrl_rd_list.list); } else { + cl->state = MEI_FILE_INITIALIZING; list_add_tail(&cb->list, &dev->ctrl_wr_list.list); } From 8e8248b1369c97c7bb6f8bcaee1f05deeabab8ef Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Tue, 12 Aug 2014 18:07:57 +0300 Subject: [PATCH 147/272] mei: nfc: fix memory leak in error path NFC will leak buffer if send failed. Use single exit point that does the freeing Cc: stable@vger.kernel.org #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/nfc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c index 3095fc514a65..5ccc23bc7690 100644 --- a/drivers/misc/mei/nfc.c +++ b/drivers/misc/mei/nfc.c @@ -342,9 +342,10 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length) ndev = (struct mei_nfc_dev *) cldev->priv_data; dev = ndev->cl->dev; + err = -ENOMEM; mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL); if (!mei_buf) - return -ENOMEM; + goto out; hdr = (struct mei_nfc_hci_hdr *) mei_buf; hdr->cmd = MEI_NFC_CMD_HCI_SEND; @@ -354,12 +355,9 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length) hdr->data_size = length; memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length); - err = __mei_cl_send(ndev->cl, mei_buf, length + MEI_NFC_HEADER_SIZE); if (err < 0) - return err; - - kfree(mei_buf); + goto out; if (!wait_event_interruptible_timeout(ndev->send_wq, ndev->recv_req_id == ndev->req_id, HZ)) { @@ -368,7 +366,8 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length) } else { ndev->req_id++; } - +out: + kfree(mei_buf); return err; } From 8626d524ef08f10fccc0c41e5f75aef8235edf47 Mon Sep 17 00:00:00 2001 From: Holger Paradies Date: Wed, 13 Aug 2014 13:22:49 -0500 Subject: [PATCH 148/272] staging/rtl8188eu: add 0df6:0076 Sitecom Europe B.V. The stick is not recognized. This dongle uses r8188eu but usb-id is missing. 3.16.0 Signed-off-by: Holger Paradies Signed-off-by: Larry Finger Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/os_dep/usb_intf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c index b8676ac77b0c..264e639f0cdf 100644 --- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c +++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c @@ -46,6 +46,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = { {USB_DEVICE(0x07b8, 0x8179)}, /* Abocom - Abocom */ {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */ {USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */ + {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */ {} /* Terminating entry */ }; From a90b858cfe27a576f7e44a456af2ee432404ee8f Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 21 Jul 2014 11:38:40 +0300 Subject: [PATCH 149/272] x86: Fix non-PC platform kernel crash on boot due to NULL dereference Upstream commit: 95d76acc7518d5 ("x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of NR_IRQS_LEGACY") removed reserved interrupts for the platforms that do not have a legacy IOAPIC. Which breaks the boot on Intel MID platforms such as Medfield: BUG: unable to handle kernel NULL pointer dereference at 0000003a IP: [] setup_irq+0xf/0x4d [ 0.000000] *pdpt = 0000000000000000 *pde = 9bbf32453167e510 The culprit is an uncoditional setting of IRQ2 which is used as cascade IRQ on legacy platforms. It seems we have to check if we have enough legacy IRQs reserved before we can call setup_irq(). The fix adds such check in native_init_IRQ() and in setup_default_timer_irq(). Signed-off-by: Andy Shevchenko Reviewed-by: Jiang Liu Reviewed-by: Thomas Gleixner Cc: David Cohen Link: http://lkml.kernel.org/r/1405931920-12871-1-git-send-email-andriy.shevchenko@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/irqinit.c | 2 +- arch/x86/kernel/time.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index 1e6cff5814fa..44f1ed42fdf2 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -203,7 +203,7 @@ void __init native_init_IRQ(void) set_intr_gate(i, interrupt[i - FIRST_EXTERNAL_VECTOR]); } - if (!acpi_ioapic && !of_ioapic) + if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs()) setup_irq(2, &irq2); #ifdef CONFIG_X86_32 diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c index bf7ef5ce29df..0fa29609b2c4 100644 --- a/arch/x86/kernel/time.c +++ b/arch/x86/kernel/time.c @@ -68,6 +68,8 @@ static struct irqaction irq0 = { void __init setup_default_timer_irq(void) { + if (!nr_legacy_irqs()) + return; setup_irq(0, &irq0); } From a2fa6721c7237b5a666f16f732628c0c09c0b954 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Mon, 25 Aug 2014 16:05:38 -0500 Subject: [PATCH 150/272] staging: r8188eu: Add new USB ID The Elecom WDC-150SU2M uses this chip. Reported-by: Hiroki Kondo Signed-off-by: Larry Finger Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/os_dep/usb_intf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c index 264e639f0cdf..407a318b09db 100644 --- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c +++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c @@ -43,6 +43,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = { {USB_DEVICE(USB_VENDER_ID_REALTEK, 0x0179)}, /* 8188ETV */ /*=== Customer ID ===*/ /****** 8188EUS ********/ + {USB_DEVICE(0x056e, 0x4008)}, /* Elecom WDC-150SU2M */ {USB_DEVICE(0x07b8, 0x8179)}, /* Abocom - Abocom */ {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */ {USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */ From 7d5929c1f34304ca5a970cfde8044053e56aa8c9 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 25 Aug 2014 16:15:32 -0700 Subject: [PATCH 151/272] mtd: nand: omap: Revert to using software ECC by default For v3.12 and prior, 1-bit Hamming code ECC via software was the default choice. Commit c66d039197e4 in v3.13 changed the behaviour to use 1-bit Hamming code via Hardware using a different ECC layout i.e. (ROM code layout) than what is used by software ECC. This ECC layout change causes NAND filesystems created in v3.12 and prior to be unusable in v3.13 and later. So revert back to using software ECC by default if an ECC scheme is not explicitely specified. This defect can be observed on the following boards during legacy boot -omap3beagle -omap3touchbook -overo -am3517crane -devkit8000 -ldp -3430sdp Signed-off-by: Roger Quadros Tested-by: Grazvydas Ignotas Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-flash.c | 2 +- arch/arm/mach-omap2/gpmc-nand.c | 3 ++- drivers/mtd/nand/omap2.c | 14 +++++++++++--- include/linux/platform_data/mtd-nand-omap2.h | 13 +++++++++++-- 4 files changed, 25 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-omap2/board-flash.c b/arch/arm/mach-omap2/board-flash.c index e87f2a83d6bf..2d245c2e641c 100644 --- a/arch/arm/mach-omap2/board-flash.c +++ b/arch/arm/mach-omap2/board-flash.c @@ -142,7 +142,7 @@ __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs, board_nand_data.nr_parts = nr_parts; board_nand_data.devsize = nand_type; - board_nand_data.ecc_opt = OMAP_ECC_HAM1_CODE_HW; + board_nand_data.ecc_opt = OMAP_ECC_HAM1_CODE_SW; gpmc_nand_init(&board_nand_data, gpmc_t); } #endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */ diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c index 8897ad7035fd..cb7764314f17 100644 --- a/arch/arm/mach-omap2/gpmc-nand.c +++ b/arch/arm/mach-omap2/gpmc-nand.c @@ -49,7 +49,8 @@ static bool gpmc_hwecc_bch_capable(enum omap_ecc ecc_opt) return 0; /* legacy platforms support only HAM1 (1-bit Hamming) ECC scheme */ - if (ecc_opt == OMAP_ECC_HAM1_CODE_HW) + if (ecc_opt == OMAP_ECC_HAM1_CODE_HW || + ecc_opt == OMAP_ECC_HAM1_CODE_SW) return 1; else return 0; diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index f0ed92e210a1..4dd617897eee 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -1794,9 +1794,12 @@ static int omap_nand_probe(struct platform_device *pdev) } /* populate MTD interface based on ECC scheme */ - nand_chip->ecc.layout = &omap_oobinfo; ecclayout = &omap_oobinfo; switch (info->ecc_opt) { + case OMAP_ECC_HAM1_CODE_SW: + nand_chip->ecc.mode = NAND_ECC_SOFT; + break; + case OMAP_ECC_HAM1_CODE_HW: pr_info("nand: using OMAP_ECC_HAM1_CODE_HW\n"); nand_chip->ecc.mode = NAND_ECC_HW; @@ -1848,7 +1851,7 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.priv = nand_bch_init(mtd, nand_chip->ecc.size, nand_chip->ecc.bytes, - &nand_chip->ecc.layout); + &ecclayout); if (!nand_chip->ecc.priv) { pr_err("nand: error: unable to use s/w BCH library\n"); err = -EINVAL; @@ -1923,7 +1926,7 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.priv = nand_bch_init(mtd, nand_chip->ecc.size, nand_chip->ecc.bytes, - &nand_chip->ecc.layout); + &ecclayout); if (!nand_chip->ecc.priv) { pr_err("nand: error: unable to use s/w BCH library\n"); err = -EINVAL; @@ -2012,6 +2015,9 @@ static int omap_nand_probe(struct platform_device *pdev) goto return_error; } + if (info->ecc_opt == OMAP_ECC_HAM1_CODE_SW) + goto scan_tail; + /* all OOB bytes from oobfree->offset till end off OOB are free */ ecclayout->oobfree->length = mtd->oobsize - ecclayout->oobfree->offset; /* check if NAND device's OOB is enough to store ECC signatures */ @@ -2021,7 +2027,9 @@ static int omap_nand_probe(struct platform_device *pdev) err = -EINVAL; goto return_error; } + nand_chip->ecc.layout = ecclayout; +scan_tail: /* second phase scan */ if (nand_scan_tail(mtd)) { err = -ENXIO; diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h index 660c029d694f..16ec262dfcc8 100644 --- a/include/linux/platform_data/mtd-nand-omap2.h +++ b/include/linux/platform_data/mtd-nand-omap2.h @@ -21,8 +21,17 @@ enum nand_io { }; enum omap_ecc { - /* 1-bit ECC calculation by GPMC, Error detection by Software */ - OMAP_ECC_HAM1_CODE_HW = 0, + /* + * 1-bit ECC: calculation and correction by SW + * ECC stored at end of spare area + */ + OMAP_ECC_HAM1_CODE_SW = 0, + + /* + * 1-bit ECC: calculation by GPMC, Error detection by Software + * ECC layout compatible with ROM code layout + */ + OMAP_ECC_HAM1_CODE_HW, /* 4-bit ECC calculation by GPMC, Error detection by Software */ OMAP_ECC_BCH4_CODE_HW_DETECTION_SW, /* 4-bit ECC calculation by GPMC, Error detection by ELM */ From a3e83f05fbbf6c4994c658521a750bbd68bdf7a6 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 25 Aug 2014 16:15:33 -0700 Subject: [PATCH 152/272] ARM: OMAP2+: GPMC: Support Software ECC scheme via DT For v3.14 and prior, 1-bit Hamming code ECC via software was the default choice for some boards e.g. 3430sdp. Commit ac65caf514ec in v3.15 changed the behaviour to use 1-bit Hamming code via Hardware using a different ECC layout i.e. (ROM code layout) than what is used by software ECC. This ECC layout change causes NAND filesystems created in v3.14 and prior to be unusable in v3.15 and later. So don't mark "sw" scheme as deperecated and support it. Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- Documentation/devicetree/bindings/mtd/gpmc-nand.txt | 2 +- arch/arm/mach-omap2/gpmc.c | 7 +++++-- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt index 65f4f7c43136..ee654e95d8ad 100644 --- a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt +++ b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt @@ -22,7 +22,7 @@ Optional properties: width of 8 is assumed. - ti,nand-ecc-opt: A string setting the ECC layout to use. One of: - "sw" use "ham1" instead + "sw" 1-bit Hamming ecc code via software "hw" use "ham1" instead "hw-romcode" use "ham1" instead "ham1" 1-bit Hamming ecc code diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 8bc13380f0a0..9f42d5437fcc 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1403,8 +1403,11 @@ static int gpmc_probe_nand_child(struct platform_device *pdev, pr_err("%s: ti,nand-ecc-opt not found\n", __func__); return -ENODEV; } - if (!strcmp(s, "ham1") || !strcmp(s, "sw") || - !strcmp(s, "hw") || !strcmp(s, "hw-romcode")) + + if (!strcmp(s, "sw")) + gpmc_nand_data->ecc_opt = OMAP_ECC_HAM1_CODE_SW; + else if (!strcmp(s, "ham1") || + !strcmp(s, "hw") || !strcmp(s, "hw-romcode")) gpmc_nand_data->ecc_opt = OMAP_ECC_HAM1_CODE_HW; else if (!strcmp(s, "bch4")) From d5c1eb17ba052966debc4d9d103fc15740b541fa Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 25 Aug 2014 16:15:33 -0700 Subject: [PATCH 153/272] ARM: dts: omap3430-sdp: Revert to using software ECC for NAND For v3.14 and prior, 1-bit Hamming code ECC via software was used for NAND on this board. Commit c06c52701695 in v3.15 changed the behaviour to use 1-bit Hamming code via Hardware using a different ECC layout i.e. (ROM code layout) than what is used by software ECC. This ECC layout change causes NAND filesystems created in v3.14 and prior to be unusable in v3.15 and later. So revert back to using software ECC scheme. Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3430-sdp.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts index 02f69f4a8fd3..9bad94efe1c8 100644 --- a/arch/arm/boot/dts/omap3430-sdp.dts +++ b/arch/arm/boot/dts/omap3430-sdp.dts @@ -107,7 +107,7 @@ #address-cells = <1>; #size-cells = <1>; reg = <1 0 0x08000000>; - ti,nand-ecc-opt = "ham1"; + ti,nand-ecc-opt = "sw"; nand-bus-width = <8>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <36>; From 40ddbf5069bd4e11447c0088fc75318e0aac53f0 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 25 Aug 2014 16:15:33 -0700 Subject: [PATCH 154/272] mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc() commit 65b97cf6b8de introduced in v3.7 caused a regression by using a reversed CS_MASK thus causing omap_calculate_ecc to always fail. As the NAND base driver never checks for .calculate()'s return value, the zeroed ECC values are used as is without showing any error to the user. However, this won't work and the NAND device won't be guarded by any error code. Fix the issue by using the correct mask. Code was tested on omap3beagle using the following procedure - flash the primary bootloader (MLO) from the kernel to the first NAND partition using nandwrite. - boot the board from NAND. This utilizes OMAP ROM loader that relies on 1-bit Hamming code ECC. Fixes: 65b97cf6b8de (mtd: nand: omap2: handle nand on gpmc) Cc: [3.7+] Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- drivers/mtd/nand/omap2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 4dd617897eee..5967b385141b 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -931,7 +931,7 @@ static int omap_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u32 val; val = readl(info->reg.gpmc_ecc_config); - if (((val >> ECC_CONFIG_CS_SHIFT) & ~CS_MASK) != info->gpmc_cs) + if (((val >> ECC_CONFIG_CS_SHIFT) & CS_MASK) != info->gpmc_cs) return -EINVAL; /* read ecc result */ From e49d519c456f4fb6f4a0473bc04ba30bb805fce5 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 25 Aug 2014 16:15:34 -0700 Subject: [PATCH 155/272] ARM: dts: DRA7: fix interrupt-cells for GPIO GPIO modules are also interrupt sources. However, they require both the GPIO number and IRQ type to function properly. By declaring that GPIO uses interrupt-cells=<1>, we essentially do not allow users of the nodes to use the interrupt property appropritely. With this change, the following now works: interrupt-parent = <&gpio6>; interrupts = <5 IRQ_TYPE_LEVEL_LOW>; Fixes: 6e58b8f1daaf ('ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board') Signed-off-by: Nishanth Menon Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/dra7.dtsi | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index 97f603c4483d..d678152db4cb 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -245,7 +245,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio2: gpio@48055000 { @@ -256,7 +256,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio3: gpio@48057000 { @@ -267,7 +267,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio4: gpio@48059000 { @@ -278,7 +278,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio5: gpio@4805b000 { @@ -289,7 +289,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio6: gpio@4805d000 { @@ -300,7 +300,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio7: gpio@48051000 { @@ -311,7 +311,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; gpio8: gpio@48053000 { @@ -322,7 +322,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <2>; }; uart1: serial@4806a000 { From 6953faf976c79a48b778a95319b8314419f7726b Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Mon, 25 Aug 2014 16:15:34 -0700 Subject: [PATCH 156/272] ARM: OMAP: fix %d confusingly prefixed with 0x in format string Fix %d confusingly prefixed with 0x in format string. Signed-off-by: Hans Wennborg Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/id.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index d42022f2a71e..53841dea80ea 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -663,7 +663,7 @@ void __init dra7xxx_check_revision(void) default: /* Unknown default to latest silicon rev as default*/ - pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%d)\n", + pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%x)\n", __func__, idcode, hawkeye, rev); omap_revision = DRA752_REV_ES1_1; } From 9a02ae4ed4ee139053d554ca1ab7d0e16609a0f5 Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Mon, 25 Aug 2014 16:15:34 -0700 Subject: [PATCH 157/272] ARM: OMAP2+: omap_device: remove warning that clk alias already exists When an alias for a clock already exists the warning is printed. For every module with a main_clk defined, a clk alias for fck is added. There are some components that have the same main_clk defined, so this is a really normal situation. For example the am33xx edma device has 4 components using the same main clock. So there are three warnings in the boot log for this already existing clock alias: platform 49000000.edma: alias fck already exists platform 49000000.edma: alias fck already exists platform 49000000.edma: alias fck already exists As this is only interesting for developers, this patch changes the message to a debug message. Signed-off-by: Markus Pargmann Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/omap_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c index 01ef59def44b..d22c30d3ccfa 100644 --- a/arch/arm/mach-omap2/omap_device.c +++ b/arch/arm/mach-omap2/omap_device.c @@ -56,7 +56,7 @@ static void _add_clkdev(struct omap_device *od, const char *clk_alias, r = clk_get_sys(dev_name(&od->pdev->dev), clk_alias); if (!IS_ERR(r)) { - dev_warn(&od->pdev->dev, + dev_dbg(&od->pdev->dev, "alias %s already exists\n", clk_alias); clk_put(r); return; From 509a81fd200d64e06990a4a548234cdce51d71ca Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 25 Aug 2014 16:15:34 -0700 Subject: [PATCH 158/272] ARM: dts: Remove twl6030 clk32g "regulator" The kernel has never supported clk32g as a regulator since it is a clock and not a regulator. Fortunately nothing actually references this node so we can just remove it. Signed-off-by: Mark Brown Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/twl6030.dtsi | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/arm/boot/dts/twl6030.dtsi b/arch/arm/boot/dts/twl6030.dtsi index 2e3bd3172b23..55eb35f068fb 100644 --- a/arch/arm/boot/dts/twl6030.dtsi +++ b/arch/arm/boot/dts/twl6030.dtsi @@ -83,10 +83,6 @@ regulator-always-on; }; - clk32kg: regulator-clk32kg { - compatible = "ti,twl6030-clk32kg"; - }; - twl_usb_comparator: usb-comparator { compatible = "ti,twl6030-usb"; interrupts = <4>, <10>; From c15adae88327a59f55fea9f84050c68a5e7a1596 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 25 Aug 2014 16:15:35 -0700 Subject: [PATCH 159/272] ARM: dts: Enable UART wake-up events for beagleboard For device tree based booting, we need to use wake-up interrupts like we already do for some omaps. This fixes a PM regression on beagleboard compared to legacy booting. Tested-by: Tero Kristo Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-beagle.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts index 3c3e6da1deac..a9aae88b74f5 100644 --- a/arch/arm/boot/dts/omap3-beagle.dts +++ b/arch/arm/boot/dts/omap3-beagle.dts @@ -292,6 +292,7 @@ &uart3 { pinctrl-names = "default"; pinctrl-0 = <&uart3_pins>; + interrupts-extended = <&intc 74 &omap3_pmx_core OMAP3_UART3_RX>; }; &gpio1 { From cc824534d4fef0e46e4486d5c1e10d3c6b1ebadc Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 25 Aug 2014 16:15:35 -0700 Subject: [PATCH 160/272] ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled Looks like MUSB cable removal can cause wake-up interrupts to stop working for device tree based booting at least for UART3 even as nothing is dynamically remuxed. This can be fixed by calling reconfigure_io_chain() for device tree based booting in hwmod code. Note that we already do that for legacy booting if the legacy mux is configured. My guess is that this is related to UART3 and MUSB ULPI hsusb0_data0 and hsusb0_data1 support for Carkit mode that somehow affect the configured IO chain for UART3 and require rearming the wake-up interrupts. In general, for device tree based booting, pinctrl-single calls the rearm hook that in turn calls reconfigure_io_chain so calling reconfigure_io_chain should not be needed from the hwmod code for other events. So let's limit the hwmod rearming of iochain only to HWMOD_FORCE_MSTANDBY where MUSB is currently the only user of it. If we see other devices needing similar changes we can add more checks for it. Cc: Paul Walmsley Cc: stable@vger.kernel.org # v3.16 Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/omap_hwmod.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 6c074f37cdd2..da1b256caccc 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -2185,6 +2185,8 @@ static int _enable(struct omap_hwmod *oh) oh->mux->pads_dynamic))) { omap_hwmod_mux(oh->mux, _HWMOD_STATE_ENABLED); _reconfigure_io_chain(); + } else if (oh->flags & HWMOD_FORCE_MSTANDBY) { + _reconfigure_io_chain(); } _add_initiator_dep(oh, mpu_oh); @@ -2291,6 +2293,8 @@ static int _idle(struct omap_hwmod *oh) if (oh->mux && oh->mux->pads_dynamic) { omap_hwmod_mux(oh->mux, _HWMOD_STATE_IDLE); _reconfigure_io_chain(); + } else if (oh->flags & HWMOD_FORCE_MSTANDBY) { + _reconfigure_io_chain(); } oh->_state = _HWMOD_STATE_IDLE; From fc2e0a8326d1b21d11ef8213298e5302867fed2c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 26 Aug 2014 01:29:21 +0200 Subject: [PATCH 161/272] ACPI / scan: Allow ACPI drivers to bind to PNP device objects We generally don't allow ACPI drivers to bind to ACPI device objects that companion "physical" device objects are created for to avoid situations in which two different drivers may attempt to handle one device at the same time. Recent ACPI device enumeration rework extended that approach to ACPI PNP devices by starting to use a scan handler for enumerating them. However, we previously allowed ACPI drivers to bind to ACPI device objects with existing PNP device companions and changing that led to functional regressions on some systems. For this reason, add a special check for PNP devices in acpi_device_probe() so that ACPI drivers can bind to ACPI device objects having existing PNP device companions as before. Fixes: eec15edbb0e1 (ACPI / PNP: use device ID list for PNPACPI device enumeration) Link: https://bugzilla.kernel.org/show_bug.cgi?id=81511 Link: https://bugzilla.kernel.org/show_bug.cgi?id=81971 Reported-by: Gabriele Mazzotta Reported-by: Dirk Griesbach Cc: 3.16+ # 3.16+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 0a817ad24f16..fd17fe7f93f2 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -975,7 +975,7 @@ static int acpi_device_probe(struct device *dev) struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); int ret; - if (acpi_dev->handler) + if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev)) return -EINVAL; if (!acpi_drv->ops.add) From 236105db632c6279a020f78c83e22eaef746006b Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Tue, 26 Aug 2014 01:29:24 +0200 Subject: [PATCH 162/272] ACPI: Run fixed event device notifications in process context Currently, notify callbacks for fixed button events are run from interrupt context. That is not necessary and after commit 0bf6368ee8f2 (ACPI / button: Add ACPI Button event via netlink routine) it causes netlink routines to be called from interrupt context which is not correct. Also, that is different from non-fixed device events (including non-fixed button events) whose notify callbacks are all executed from process context. For the above reasons, make fixed button device notify callbacks run in process context which will avoid the deadlock when using netlink to report button events to user space. Fixes: 0bf6368ee8f2 (ACPI / button: Add ACPI Button event via netlink routine) Link: https://lkml.org/lkml/2014/8/21/606 Reported-by: Benjamin Block Reported-by: Knut Petersen Signed-off-by: Lan Tianyu [rjw: Function names, subject and changelog.] Cc: 3.15+ # 3.15+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index fd17fe7f93f2..9a9298994e26 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -922,12 +922,17 @@ static void acpi_device_notify(acpi_handle handle, u32 event, void *data) device->driver->ops.notify(device, event); } -static acpi_status acpi_device_notify_fixed(void *data) +static void acpi_device_notify_fixed(void *data) { struct acpi_device *device = data; /* Fixed hardware devices have no handles */ acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device); +} + +static acpi_status acpi_device_fixed_event(void *data) +{ + acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data); return AE_OK; } @@ -938,12 +943,12 @@ static int acpi_device_install_notify_handler(struct acpi_device *device) if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) status = acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_device_notify_fixed, + acpi_device_fixed_event, device); else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) status = acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_device_notify_fixed, + acpi_device_fixed_event, device); else status = acpi_install_notify_handler(device->handle, @@ -960,10 +965,10 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device) { if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_device_notify_fixed); + acpi_device_fixed_event); else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_device_notify_fixed); + acpi_device_fixed_event); else acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, acpi_device_notify); From 3afcf2ece453e1a8c2c6de19cdf06da3772a1b08 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Thu, 21 Aug 2014 14:41:13 +0800 Subject: [PATCH 163/272] ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set There is a platform refusing to respond QR_EC when SCI_EVT isn't set (Acer Aspire V5-573G). Currently, we rely on the behaviour that the EC firmware can respond something (for example, 0x00 to indicate "no outstanding events") to QR_EC even when SCI_EVT is not set, but the reporter has complained about AC/battery pluging/unpluging and video brightness change delay on that platform. This is because the work item that has issued QR_EC has to wait until timeout in this case, and the _Qxx method evaluation work item queued after QR_EC one is delayed. It sounds reasonable to fix this issue by: 1. Implementing SCI_EVT sanity check before issuing QR_EC in the EC driver's main state machine. 2. Moving QR_EC issuing out of the work queue used by _Qxx evaluation to a seperate IRQ handling thread. This patch fixes this issue using solution 1. By disallowing QR_EC to be issued when SCI_EVT isn't set, we are able to handle such platform in the EC driver's main state machine. This patch enhances the state machine in this way to survive with such malfunctioning EC firmware. Note that this patch can also fix CLEAR_ON_RESUME quirk which also relies on the assumption that the platforms are able to respond even when SCI_EVT isn't set. Fixes: c0d653412fc8 ACPI / EC: Fix race condition in ec_transaction_completed() Link: https://bugzilla.kernel.org/show_bug.cgi?id=82611 Reported-and-tested-by: Alexander Mezin Signed-off-by: Lv Zheng Cc: 3.16+ # 3.16+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index a66ab658abbc..5e1ed318276c 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -197,6 +197,8 @@ static bool advance_transaction(struct acpi_ec *ec) t->rdata[t->ri++] = acpi_ec_read_data(ec); if (t->rlen == t->ri) { t->flags |= ACPI_EC_COMMAND_COMPLETE; + if (t->command == ACPI_EC_COMMAND_QUERY) + pr_debug("hardware QR_EC completion\n"); wakeup = true; } } else @@ -208,7 +210,20 @@ static bool advance_transaction(struct acpi_ec *ec) } return wakeup; } else { - if ((status & ACPI_EC_FLAG_IBF) == 0) { + /* + * There is firmware refusing to respond QR_EC when SCI_EVT + * is not set, for which case, we complete the QR_EC + * without issuing it to the firmware. + * https://bugzilla.kernel.org/show_bug.cgi?id=86211 + */ + if (!(status & ACPI_EC_FLAG_SCI) && + (t->command == ACPI_EC_COMMAND_QUERY)) { + t->flags |= ACPI_EC_COMMAND_POLL; + t->rdata[t->ri++] = 0x00; + t->flags |= ACPI_EC_COMMAND_COMPLETE; + pr_debug("software QR_EC completion\n"); + wakeup = true; + } else if ((status & ACPI_EC_FLAG_IBF) == 0) { acpi_ec_write_cmd(ec, t->command); t->flags |= ACPI_EC_COMMAND_POLL; } else From 558e4736f2e1b0e6323adf7a5e4df77ed6cfc1a4 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Thu, 21 Aug 2014 14:41:26 +0800 Subject: [PATCH 164/272] ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC There is platform refusing to respond QR_EC when SCI_EVT isn't set which is Acer Aspire V5-573G. By disallowing QR_EC to be issued before the previous one has been completed we are able to reduce the possibilities to trigger issues on such platforms. Note that this fix can only reduce the occurrence rate of this issue, but this issue may still occur when such a platform doesn't clear SCI_EVT before or immediately after completing the previous QR_EC transaction. This patch cannot fix the CLEAR_ON_RESUME quirk which also relies on the assumption that the platforms are able to respond even when SCI_EVT isn't set. But this patch is still useful as it can help to reduce the number of scheduled QR_EC work items. Link: https://bugzilla.kernel.org/show_bug.cgi?id=82611 Reported-and-tested-by: Alexander Mezin Signed-off-by: Lv Zheng Cc: 3.16+ # 3.16+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 5e1ed318276c..9922cc46b15c 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -303,11 +303,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, /* following two actions should be kept atomic */ ec->curr = t; start_transaction(ec); - if (ec->curr->command == ACPI_EC_COMMAND_QUERY) - clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); spin_unlock_irqrestore(&ec->lock, tmp); ret = ec_poll(ec); spin_lock_irqsave(&ec->lock, tmp); + if (ec->curr->command == ACPI_EC_COMMAND_QUERY) + clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); ec->curr = NULL; spin_unlock_irqrestore(&ec->lock, tmp); return ret; From 1bfbd8eb8a7f6f1eb573ccdfae5c86395abc79cb Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 19 Aug 2014 15:55:22 +0300 Subject: [PATCH 165/272] ACPI / LPSS: Add ACPI IDs for Intel Braswell Enable more identifiers for the existing devices for Intel Braswell and Cherryview. Signed-off-by: Alan Cox Signed-off-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index ce06149088c5..9dfec48dd4e5 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -196,6 +196,17 @@ static struct lpss_device_desc byt_i2c_dev_desc = { .setup = lpss_i2c_setup, }; +static struct lpss_shared_clock bsw_pwm_clock = { + .name = "pwm_clk", + .rate = 19200000, +}; + +static struct lpss_device_desc bsw_pwm_dev_desc = { + .clk_required = true, + .save_ctx = true, + .shared_clock = &bsw_pwm_clock, +}; + #else #define LPSS_ADDR(desc) (0UL) @@ -225,6 +236,12 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "INT33B2", }, { "INT33FC", }, + /* Braswell LPSS devices */ + { "80862288", LPSS_ADDR(bsw_pwm_dev_desc) }, + { "8086228A", LPSS_ADDR(byt_uart_dev_desc) }, + { "8086228E", LPSS_ADDR(byt_spi_dev_desc) }, + { "808622C1", LPSS_ADDR(byt_i2c_dev_desc) }, + { "INT3430", LPSS_ADDR(lpt_dev_desc) }, { "INT3431", LPSS_ADDR(lpt_dev_desc) }, { "INT3432", LPSS_ADDR(lpt_i2c_dev_desc) }, From 4ce97dbf50245227add17c83d87dc838e7ca79d0 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Mon, 25 Aug 2014 13:59:41 -0400 Subject: [PATCH 166/272] trace: Fix epoll hang when we race with new entries Epoll on trace_pipe can sometimes hang in a weird case. If the ring buffer is empty when we set waiters_pending but an event shows up exactly at that moment we can miss being woken up by the ring buffers irq work. Since ring_buffer_empty() is inherently racey we will sometimes think that the buffer is not empty. So we don't get woken up and we don't think there are any events even though there were some ready when we added the watch, which makes us hang. This patch fixes this by making sure that we are actually on the wait list before we set waiters_pending, and add a memory barrier to make sure ring_buffer_empty() is going to be correct. Link: http://lkml.kernel.org/p/1408989581-23727-1-git-send-email-jbacik@fb.com Cc: stable@vger.kernel.org # 3.10+ Cc: Martin Lau Signed-off-by: Josef Bacik Signed-off-by: Steven Rostedt --- kernel/trace/ring_buffer.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index afb04b9b818a..b38fb2b9e237 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -626,8 +626,22 @@ int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu, work = &cpu_buffer->irq_work; } - work->waiters_pending = true; poll_wait(filp, &work->waiters, poll_table); + work->waiters_pending = true; + /* + * There's a tight race between setting the waiters_pending and + * checking if the ring buffer is empty. Once the waiters_pending bit + * is set, the next event will wake the task up, but we can get stuck + * if there's only a single event in. + * + * FIXME: Ideally, we need a memory barrier on the writer side as well, + * but adding a memory barrier to all events will cause too much of a + * performance hit in the fast path. We only need a memory barrier when + * the buffer goes from empty to having content. But as this race is + * extremely small, and it's not a problem if another event comes in, we + * will fix it later. + */ + smp_mb(); if ((cpu == RING_BUFFER_ALL_CPUS && !ring_buffer_empty(buffer)) || (cpu != RING_BUFFER_ALL_CPUS && !ring_buffer_empty_cpu(buffer, cpu))) From fc3e825fa91636a5d1b992e769b2d8279877bfad Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 13 Aug 2014 13:00:49 -0700 Subject: [PATCH 167/272] ARM: brcmstb: revert SMP support There were several issues (of varying degree of importance) pointed out with this code late in the review cycle, yet the code was still merged. Let's rip it out for now and look at resubmitting at a later time. This reverts most of commit 4fbe66d9903425156c193ae44c81c0f7557755c4. Signed-off-by: Brian Norris Signed-off-by: Olof Johansson --- arch/arm/mach-bcm/Makefile | 1 - arch/arm/mach-bcm/brcmstb.h | 19 -- arch/arm/mach-bcm/headsmp-brcmstb.S | 33 --- arch/arm/mach-bcm/platsmp-brcmstb.c | 363 ---------------------------- 4 files changed, 416 deletions(-) delete mode 100644 arch/arm/mach-bcm/brcmstb.h delete mode 100644 arch/arm/mach-bcm/headsmp-brcmstb.S delete mode 100644 arch/arm/mach-bcm/platsmp-brcmstb.c diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile index 67c492aabf4d..b19a39652545 100644 --- a/arch/arm/mach-bcm/Makefile +++ b/arch/arm/mach-bcm/Makefile @@ -36,5 +36,4 @@ obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o ifeq ($(CONFIG_ARCH_BRCMSTB),y) obj-y += brcmstb.o -obj-$(CONFIG_SMP) += headsmp-brcmstb.o platsmp-brcmstb.o endif diff --git a/arch/arm/mach-bcm/brcmstb.h b/arch/arm/mach-bcm/brcmstb.h deleted file mode 100644 index ec0c3d112b36..000000000000 --- a/arch/arm/mach-bcm/brcmstb.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Copyright (C) 2013-2014 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __BRCMSTB_H__ -#define __BRCMSTB_H__ - -void brcmstb_secondary_startup(void); - -#endif /* __BRCMSTB_H__ */ diff --git a/arch/arm/mach-bcm/headsmp-brcmstb.S b/arch/arm/mach-bcm/headsmp-brcmstb.S deleted file mode 100644 index 199c1ea58248..000000000000 --- a/arch/arm/mach-bcm/headsmp-brcmstb.S +++ /dev/null @@ -1,33 +0,0 @@ -/* - * SMP boot code for secondary CPUs - * Based on arch/arm/mach-tegra/headsmp.S - * - * Copyright (C) 2010 NVIDIA, Inc. - * Copyright (C) 2013-2014 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include -#include -#include - - .section ".text.head", "ax" - -ENTRY(brcmstb_secondary_startup) - /* - * Ensure CPU is in a sane state by disabling all IRQs and switching - * into SVC mode. - */ - setmode PSR_I_BIT | PSR_F_BIT | SVC_MODE, r0 - - bl v7_invalidate_l1 - b secondary_startup -ENDPROC(brcmstb_secondary_startup) diff --git a/arch/arm/mach-bcm/platsmp-brcmstb.c b/arch/arm/mach-bcm/platsmp-brcmstb.c deleted file mode 100644 index af780e9c23a6..000000000000 --- a/arch/arm/mach-bcm/platsmp-brcmstb.c +++ /dev/null @@ -1,363 +0,0 @@ -/* - * Broadcom STB CPU SMP and hotplug support for ARM - * - * Copyright (C) 2013-2014 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include "brcmstb.h" - -enum { - ZONE_MAN_CLKEN_MASK = BIT(0), - ZONE_MAN_RESET_CNTL_MASK = BIT(1), - ZONE_MAN_MEM_PWR_MASK = BIT(4), - ZONE_RESERVED_1_MASK = BIT(5), - ZONE_MAN_ISO_CNTL_MASK = BIT(6), - ZONE_MANUAL_CONTROL_MASK = BIT(7), - ZONE_PWR_DN_REQ_MASK = BIT(9), - ZONE_PWR_UP_REQ_MASK = BIT(10), - ZONE_BLK_RST_ASSERT_MASK = BIT(12), - ZONE_PWR_OFF_STATE_MASK = BIT(25), - ZONE_PWR_ON_STATE_MASK = BIT(26), - ZONE_DPG_PWR_STATE_MASK = BIT(28), - ZONE_MEM_PWR_STATE_MASK = BIT(29), - ZONE_RESET_STATE_MASK = BIT(31), - CPU0_PWR_ZONE_CTRL_REG = 1, - CPU_RESET_CONFIG_REG = 2, -}; - -static void __iomem *cpubiuctrl_block; -static void __iomem *hif_cont_block; -static u32 cpu0_pwr_zone_ctrl_reg; -static u32 cpu_rst_cfg_reg; -static u32 hif_cont_reg; - -#ifdef CONFIG_HOTPLUG_CPU -static DEFINE_PER_CPU_ALIGNED(int, per_cpu_sw_state); - -static int per_cpu_sw_state_rd(u32 cpu) -{ - sync_cache_r(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); - return per_cpu(per_cpu_sw_state, cpu); -} - -static void per_cpu_sw_state_wr(u32 cpu, int val) -{ - per_cpu(per_cpu_sw_state, cpu) = val; - dmb(); - sync_cache_w(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu))); - dsb_sev(); -} -#else -static inline void per_cpu_sw_state_wr(u32 cpu, int val) { } -#endif - -static void __iomem *pwr_ctrl_get_base(u32 cpu) -{ - void __iomem *base = cpubiuctrl_block + cpu0_pwr_zone_ctrl_reg; - base += (cpu_logical_map(cpu) * 4); - return base; -} - -static u32 pwr_ctrl_rd(u32 cpu) -{ - void __iomem *base = pwr_ctrl_get_base(cpu); - return readl_relaxed(base); -} - -static void pwr_ctrl_wr(u32 cpu, u32 val) -{ - void __iomem *base = pwr_ctrl_get_base(cpu); - writel(val, base); -} - -static void cpu_rst_cfg_set(u32 cpu, int set) -{ - u32 val; - val = readl_relaxed(cpubiuctrl_block + cpu_rst_cfg_reg); - if (set) - val |= BIT(cpu_logical_map(cpu)); - else - val &= ~BIT(cpu_logical_map(cpu)); - writel_relaxed(val, cpubiuctrl_block + cpu_rst_cfg_reg); -} - -static void cpu_set_boot_addr(u32 cpu, unsigned long boot_addr) -{ - const int reg_ofs = cpu_logical_map(cpu) * 8; - writel_relaxed(0, hif_cont_block + hif_cont_reg + reg_ofs); - writel_relaxed(boot_addr, hif_cont_block + hif_cont_reg + 4 + reg_ofs); -} - -static void brcmstb_cpu_boot(u32 cpu) -{ - pr_info("SMP: Booting CPU%d...\n", cpu); - - /* - * set the reset vector to point to the secondary_startup - * routine - */ - cpu_set_boot_addr(cpu, virt_to_phys(brcmstb_secondary_startup)); - - /* unhalt the cpu */ - cpu_rst_cfg_set(cpu, 0); -} - -static void brcmstb_cpu_power_on(u32 cpu) -{ - /* - * The secondary cores power was cut, so we must go through - * power-on initialization. - */ - u32 tmp; - - pr_info("SMP: Powering up CPU%d...\n", cpu); - - /* Request zone power up */ - pwr_ctrl_wr(cpu, ZONE_PWR_UP_REQ_MASK); - - /* Wait for the power up FSM to complete */ - do { - tmp = pwr_ctrl_rd(cpu); - } while (!(tmp & ZONE_PWR_ON_STATE_MASK)); - - per_cpu_sw_state_wr(cpu, 1); -} - -static int brcmstb_cpu_get_power_state(u32 cpu) -{ - int tmp = pwr_ctrl_rd(cpu); - return (tmp & ZONE_RESET_STATE_MASK) ? 0 : 1; -} - -#ifdef CONFIG_HOTPLUG_CPU - -static void brcmstb_cpu_die(u32 cpu) -{ - v7_exit_coherency_flush(all); - - /* Prevent all interrupts from reaching this CPU. */ - arch_local_irq_disable(); - - /* - * Final full barrier to ensure everything before this instruction has - * quiesced. - */ - isb(); - dsb(); - - per_cpu_sw_state_wr(cpu, 0); - - /* Sit and wait to die */ - wfi(); - - /* We should never get here... */ - panic("Spurious interrupt on CPU %d received!\n", cpu); -} - -static int brcmstb_cpu_kill(u32 cpu) -{ - u32 tmp; - - pr_info("SMP: Powering down CPU%d...\n", cpu); - - while (per_cpu_sw_state_rd(cpu)) - ; - - /* Program zone reset */ - pwr_ctrl_wr(cpu, ZONE_RESET_STATE_MASK | ZONE_BLK_RST_ASSERT_MASK | - ZONE_PWR_DN_REQ_MASK); - - /* Verify zone reset */ - tmp = pwr_ctrl_rd(cpu); - if (!(tmp & ZONE_RESET_STATE_MASK)) - pr_err("%s: Zone reset bit for CPU %d not asserted!\n", - __func__, cpu); - - /* Wait for power down */ - do { - tmp = pwr_ctrl_rd(cpu); - } while (!(tmp & ZONE_PWR_OFF_STATE_MASK)); - - /* Settle-time from Broadcom-internal DVT reference code */ - udelay(7); - - /* Assert reset on the CPU */ - cpu_rst_cfg_set(cpu, 1); - - return 1; -} - -#endif /* CONFIG_HOTPLUG_CPU */ - -static int __init setup_hifcpubiuctrl_regs(struct device_node *np) -{ - int rc = 0; - char *name; - struct device_node *syscon_np = NULL; - - name = "syscon-cpu"; - - syscon_np = of_parse_phandle(np, name, 0); - if (!syscon_np) { - pr_err("can't find phandle %s\n", name); - rc = -EINVAL; - goto cleanup; - } - - cpubiuctrl_block = of_iomap(syscon_np, 0); - if (!cpubiuctrl_block) { - pr_err("iomap failed for cpubiuctrl_block\n"); - rc = -EINVAL; - goto cleanup; - } - - rc = of_property_read_u32_index(np, name, CPU0_PWR_ZONE_CTRL_REG, - &cpu0_pwr_zone_ctrl_reg); - if (rc) { - pr_err("failed to read 1st entry from %s property (%d)\n", name, - rc); - rc = -EINVAL; - goto cleanup; - } - - rc = of_property_read_u32_index(np, name, CPU_RESET_CONFIG_REG, - &cpu_rst_cfg_reg); - if (rc) { - pr_err("failed to read 2nd entry from %s property (%d)\n", name, - rc); - rc = -EINVAL; - goto cleanup; - } - -cleanup: - if (syscon_np) - of_node_put(syscon_np); - - return rc; -} - -static int __init setup_hifcont_regs(struct device_node *np) -{ - int rc = 0; - char *name; - struct device_node *syscon_np = NULL; - - name = "syscon-cont"; - - syscon_np = of_parse_phandle(np, name, 0); - if (!syscon_np) { - pr_err("can't find phandle %s\n", name); - rc = -EINVAL; - goto cleanup; - } - - hif_cont_block = of_iomap(syscon_np, 0); - if (!hif_cont_block) { - pr_err("iomap failed for hif_cont_block\n"); - rc = -EINVAL; - goto cleanup; - } - - /* offset is at top of hif_cont_block */ - hif_cont_reg = 0; - -cleanup: - if (syscon_np) - of_node_put(syscon_np); - - return rc; -} - -static void __init brcmstb_cpu_ctrl_setup(unsigned int max_cpus) -{ - int rc; - struct device_node *np; - char *name; - - name = "brcm,brcmstb-smpboot"; - np = of_find_compatible_node(NULL, NULL, name); - if (!np) { - pr_err("can't find compatible node %s\n", name); - return; - } - - rc = setup_hifcpubiuctrl_regs(np); - if (rc) - return; - - rc = setup_hifcont_regs(np); - if (rc) - return; -} - -static DEFINE_SPINLOCK(boot_lock); - -static void brcmstb_secondary_init(unsigned int cpu) -{ - /* - * Synchronise with the boot thread. - */ - spin_lock(&boot_lock); - spin_unlock(&boot_lock); -} - -static int brcmstb_boot_secondary(unsigned int cpu, struct task_struct *idle) -{ - /* - * set synchronisation state between this boot processor - * and the secondary one - */ - spin_lock(&boot_lock); - - /* Bring up power to the core if necessary */ - if (brcmstb_cpu_get_power_state(cpu) == 0) - brcmstb_cpu_power_on(cpu); - - brcmstb_cpu_boot(cpu); - - /* - * now the secondary core is starting up let it run its - * calibrations, then wait for it to finish - */ - spin_unlock(&boot_lock); - - return 0; -} - -static struct smp_operations brcmstb_smp_ops __initdata = { - .smp_prepare_cpus = brcmstb_cpu_ctrl_setup, - .smp_secondary_init = brcmstb_secondary_init, - .smp_boot_secondary = brcmstb_boot_secondary, -#ifdef CONFIG_HOTPLUG_CPU - .cpu_kill = brcmstb_cpu_kill, - .cpu_die = brcmstb_cpu_die, -#endif -}; - -CPU_METHOD_OF_DECLARE(brcmstb_smp, "brcm,brahma-b15", &brcmstb_smp_ops); From 754d561ab694ff240ad1615abd0d99f3c1db79a2 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Thu, 21 Aug 2014 08:23:57 -0400 Subject: [PATCH 168/272] fbdev: Remove __init from chips_hw_init() to fix build failure Fix build failure caused as follows: The function chipsfb_pci_init() references the function __init chips_hw_init(). This is often because chipsfb_pci_init lacks a __init annotation or the annotation of chips_hw_init is wrong. make: *** [drivers] Error 2 by removing the __init annotation from chips_hw_init(). The other thing that could have been done was annotating chipsfb_pci_init(). But that cannot be done since chipsfb_pci_init() is called from non __init functions. Signed-off-by: Pranith Kumar Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/chipsfb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/chipsfb.c b/drivers/video/fbdev/chipsfb.c index 206a66b61072..59abdc6a97f6 100644 --- a/drivers/video/fbdev/chipsfb.c +++ b/drivers/video/fbdev/chipsfb.c @@ -273,7 +273,7 @@ static struct chips_init_reg chips_init_xr[] = { { 0xa8, 0x00 } }; -static void __init chips_hw_init(void) +static void chips_hw_init(void) { int i; From 2b6c53b1504865728a6dfad3e720918a2f89f3a5 Mon Sep 17 00:00:00 2001 From: "Jon Medhurst (Tixy)" Date: Wed, 20 Aug 2014 13:41:04 +0100 Subject: [PATCH 169/272] video: ARM CLCD: Fix calculation of bits-per-pixel If the device-tree specifies a max-memory-bandwidth property then the CLCD driver uses that to calculate the bits-per-pixel supported, however, this calculation is faulty for two reasons. 1. It doesn't ensure that the result is a sane value, i.e. a power of 2 and <= 32 as the rest of the code assumes. 2. It uses the displayed resolution and calculates the average bandwidth across the whole frame. It should instead calculate the peak bandwidth based on the pixel clock. This patch fixes both the above. Signed-off-by: Jon Medhurst Acked-by: Pawel Moll Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/amba-clcd.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index beadd3edaa17..a7b6217ac87b 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -650,6 +651,7 @@ static int clcdfb_of_init_display(struct clcd_fb *fb) { struct device_node *endpoint; int err; + unsigned int bpp; u32 max_bandwidth; u32 tft_r0b0g0[3]; @@ -667,11 +669,22 @@ static int clcdfb_of_init_display(struct clcd_fb *fb) err = of_property_read_u32(fb->dev->dev.of_node, "max-memory-bandwidth", &max_bandwidth); - if (!err) - fb->panel->bpp = 8 * max_bandwidth / (fb->panel->mode.xres * - fb->panel->mode.yres * fb->panel->mode.refresh); - else - fb->panel->bpp = 32; + if (!err) { + /* + * max_bandwidth is in bytes per second and pixclock in + * pico-seconds, so the maximum allowed bits per pixel is + * 8 * max_bandwidth / (PICOS2KHZ(pixclock) * 1000) + * Rearrange this calculation to avoid overflow and then ensure + * result is a valid format. + */ + bpp = max_bandwidth / (1000 / 8) + / PICOS2KHZ(fb->panel->mode.pixclock); + bpp = rounddown_pow_of_two(bpp); + if (bpp > 32) + bpp = 32; + } else + bpp = 32; + fb->panel->bpp = bpp; #ifdef CONFIG_CPU_BIG_ENDIAN fb->panel->cntl |= CNTL_BEBO; From 6c131850eca653344c41d68ce87f3ab5a89af89e Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Wed, 6 Aug 2014 22:12:18 +0200 Subject: [PATCH 170/272] drivers: video: fbdev: atmel_lcdfb.c: fix error return code Convert a zero return value on error to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // Signed-off-by: Julia Lawall Acked-by: Nicolas Ferre Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/atmel_lcdfb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c index 92640d46770a..1d8bdb92939b 100644 --- a/drivers/video/fbdev/atmel_lcdfb.c +++ b/drivers/video/fbdev/atmel_lcdfb.c @@ -1102,12 +1102,14 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info *sinfo) timings = of_get_display_timings(display_np); if (!timings) { dev_err(dev, "failed to get display timings\n"); + ret = -EINVAL; goto put_display_node; } timings_np = of_find_node_by_name(display_np, "display-timings"); if (!timings_np) { dev_err(dev, "failed to find display-timings node\n"); + ret = -ENODEV; goto put_display_node; } From 62795a0d81970bfdd5866ffd87160c670a6b344c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 11 Jul 2014 12:21:36 +0300 Subject: [PATCH 171/272] video: of: display_timing: double free on error The display_timings_release() function frees "disp" and we free it again on the next line. Signed-off-by: Dan Carpenter Signed-off-by: Tomi Valkeinen --- drivers/video/of_display_timing.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c index 987edf110038..5c098d5b4043 100644 --- a/drivers/video/of_display_timing.c +++ b/drivers/video/of_display_timing.c @@ -236,6 +236,7 @@ timingfail: if (native_mode) of_node_put(native_mode); display_timings_release(disp); + disp = NULL; entryfail: kfree(disp); dispfail: From 31f32a21aa7e31179406f82b5fb3195b83d7acc8 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Aug 2014 12:17:36 +0200 Subject: [PATCH 172/272] drm: sti: tvout: fix return value check in sti_tvout_probe() In case of error, the function devm_ioremap_nocache() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun --- drivers/gpu/drm/sti/sti_tvout.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_tvout.c b/drivers/gpu/drm/sti/sti_tvout.c index b69e26fee76e..9ad2d44d496f 100644 --- a/drivers/gpu/drm/sti/sti_tvout.c +++ b/drivers/gpu/drm/sti/sti_tvout.c @@ -591,8 +591,8 @@ static int sti_tvout_probe(struct platform_device *pdev) return -ENOMEM; } tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(tvout->regs)) - return PTR_ERR(tvout->regs); + if (!tvout->regs) + return -ENOMEM; /* get reset resources */ tvout->reset = devm_reset_control_get(dev, "tvout"); From 88cfc3fb77d2a280f935dc482bdd781b96ff5570 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Aug 2014 12:23:07 +0200 Subject: [PATCH 173/272] drm: sti: hdmi: fix return value check in sti_hdmi_probe() In case of error, the function devm_ioremap_nocache() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun --- drivers/gpu/drm/sti/sti_hdmi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 284e541d970d..8319f764c18e 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -713,8 +713,8 @@ static int sti_hdmi_probe(struct platform_device *pdev) return -ENOMEM; } hdmi->regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(hdmi->regs)) - return PTR_ERR(hdmi->regs); + if (!hdmi->regs) + return -ENOMEM; if (of_device_is_compatible(np, "st,stih416-hdmi")) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -725,8 +725,8 @@ static int sti_hdmi_probe(struct platform_device *pdev) } hdmi->syscfg = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(hdmi->syscfg)) - return PTR_ERR(hdmi->syscfg); + if (!hdmi->syscfg) + return -ENOMEM; } From 5024a2b7ae9a92b8ec97ac1507efb283778480ce Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Aug 2014 12:23:52 +0200 Subject: [PATCH 174/272] drm: sti: hda: fix return value check in sti_hda_probe() In case of error, the function devm_ioremap_nocache() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun --- drivers/gpu/drm/sti/sti_hda.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 72d957f81c05..2802b81cc9a2 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -730,16 +730,16 @@ static int sti_hda_probe(struct platform_device *pdev) return -ENOMEM; } hda->regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(hda->regs)) - return PTR_ERR(hda->regs); + if (!hda->regs) + return -ENOMEM; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "video-dacs-ctrl"); if (res) { hda->video_dacs_ctrl = devm_ioremap_nocache(dev, res->start, resource_size(res)); - if (IS_ERR(hda->video_dacs_ctrl)) - return PTR_ERR(hda->video_dacs_ctrl); + if (!hda->video_dacs_ctrl) + return -ENOMEM; } else { /* If no existing video-dacs-ctrl resource continue the probe */ DRM_DEBUG_DRIVER("No video-dacs-ctrl resource\n"); From eacd9aa98bdeef5ba19072d3f07dfcccd24988f2 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 26 Aug 2014 12:24:24 +0200 Subject: [PATCH 175/272] drm: sti: Fix return value check in sti_drm_platform_probe() In case of error, the function platform_device_register_resndata() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun --- drivers/gpu/drm/sti/sti_drm_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_drm_drv.c b/drivers/gpu/drm/sti/sti_drm_drv.c index a7cc24917a96..223d93c3a05d 100644 --- a/drivers/gpu/drm/sti/sti_drm_drv.c +++ b/drivers/gpu/drm/sti/sti_drm_drv.c @@ -201,8 +201,8 @@ static int sti_drm_platform_probe(struct platform_device *pdev) master = platform_device_register_resndata(dev, DRIVER_NAME "__master", -1, NULL, 0, NULL, 0); - if (!master) - return -EINVAL; + if (IS_ERR(master)) + return PTR_ERR(master); platform_set_drvdata(pdev, master); return 0; From 8e932cf0eb41a5a2294be76898433d1f137867be Mon Sep 17 00:00:00 2001 From: Kiran Padwal Date: Tue, 26 Aug 2014 12:25:24 +0200 Subject: [PATCH 176/272] drm: sti: Make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Kiran Padwal --- drivers/gpu/drm/sti/sti_hda.c | 2 +- drivers/gpu/drm/sti/sti_hdmi.c | 2 +- drivers/gpu/drm/sti/sti_tvout.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 2802b81cc9a2..2ae9a9b73666 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -770,7 +770,7 @@ static int sti_hda_remove(struct platform_device *pdev) return 0; } -static struct of_device_id hda_of_match[] = { +static const struct of_device_id hda_of_match[] = { { .compatible = "st,stih416-hda", }, { .compatible = "st,stih407-hda", }, { /* end node */ } diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 8319f764c18e..ef93156a69c6 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -677,7 +677,7 @@ static const struct component_ops sti_hdmi_ops = { .unbind = sti_hdmi_unbind, }; -static struct of_device_id hdmi_of_match[] = { +static const struct of_device_id hdmi_of_match[] = { { .compatible = "st,stih416-hdmi", .data = &tx3g0c55phy_ops, diff --git a/drivers/gpu/drm/sti/sti_tvout.c b/drivers/gpu/drm/sti/sti_tvout.c index 9ad2d44d496f..b8afe490356a 100644 --- a/drivers/gpu/drm/sti/sti_tvout.c +++ b/drivers/gpu/drm/sti/sti_tvout.c @@ -624,7 +624,7 @@ static int sti_tvout_remove(struct platform_device *pdev) return 0; } -static struct of_device_id tvout_of_match[] = { +static const struct of_device_id tvout_of_match[] = { { .compatible = "st,stih416-tvout", }, { .compatible = "st,stih407-tvout", }, { /* end node */ } From f5ec6c4bcd11ed8867d6f5efc98dc3a81904ab00 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Tue, 26 Aug 2014 12:26:18 +0200 Subject: [PATCH 177/272] drm: sti: Add missing dependency on RESET_CONTROLLER Add missing dependency on RESET_CONTROLLER in order to fix the following build error. drivers/gpu/drm/sti/sti_hdmi.c: In function 'sti_hdmi_probe' drivers/gpu/drm/sti/sti_hdmi.c:780:2: error: implicit declaration of function 'devm_reset_control_get' [-Werror=implicit-function-declaration] Benjamin Gaignard remark: I have change "depends on" to "select" but keep the original author name. Signed-off-by: Jingoo Han --- drivers/gpu/drm/sti/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig index 2d9d4252d598..ae8850f3e63b 100644 --- a/drivers/gpu/drm/sti/Kconfig +++ b/drivers/gpu/drm/sti/Kconfig @@ -1,6 +1,7 @@ config DRM_STI tristate "DRM Support for STMicroelectronics SoC stiH41x Series" depends on DRM && (SOC_STIH415 || SOC_STIH416 || ARCH_MULTIPLATFORM) + select RESET_CONTROLLER select DRM_KMS_HELPER select DRM_GEM_CMA_HELPER select DRM_KMS_CMA_HELPER From 4d4e2c003bd6c6bdd85080bd096d54d5d251defa Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Thu, 3 Jul 2014 14:46:39 +0100 Subject: [PATCH 178/272] video: da8xx-fb: preserve display width when changing HSYNC When looking at this driver for a client, I noticed the code that configures the HSYNC pulse clobbers the display width in the same register. It only preserves the MS part of the width in bit 3 and zeros the LS part of the width in bits 9 to 4. This doesn't matter during initialization as the width is configured afterwards, but subsequent use of the FBIPUT_HSYNC ioctl would clobber the width. Preserve bits 9 to 0 of LCD_RASTER_TIMING_0_REG when configuring the horizontal sync. Signed-off-by: Ian Abbott Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/da8xx-fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c index 788f6b37fce7..10c876c95772 100644 --- a/drivers/video/fbdev/da8xx-fb.c +++ b/drivers/video/fbdev/da8xx-fb.c @@ -419,7 +419,7 @@ static void lcd_cfg_horizontal_sync(int back_porch, int pulse_width, { u32 reg; - reg = lcdc_read(LCD_RASTER_TIMING_0_REG) & 0xf; + reg = lcdc_read(LCD_RASTER_TIMING_0_REG) & 0x3ff; reg |= (((back_porch-1) & 0xff) << 24) | (((front_porch-1) & 0xff) << 16) | (((pulse_width-1) & 0x3f) << 10); From d19d744685f47f1bb3d39b3ec51eb50afe5ff47d Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Tue, 26 Aug 2014 16:14:02 +0200 Subject: [PATCH 179/272] block: fix error handling in sg_io Before commit 2cada584b200 ("block: cleanup error handling in sg_io"), we had ret = 0 before entering the last big if block of sg_io. Since 2cada584b200, ret = -EFAULT, which breaks hdparm: /dev/sda: setting Advanced Power Management level to 0xc8 (200) HDIO_DRIVE_CMD failed: Bad address APM_level = 128 Signed-off-by: Sabrina Dubroca Fixes: 2cada584b200 ("block: cleanup error handling in sg_io") Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 5dd477bfb4bc..9b8eaeca6a79 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -330,6 +330,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, if (blk_fill_sghdr_rq(q, rq, hdr, mode)) goto out_free_cdb; + ret = 0; if (hdr->iovec_count) { size_t iov_data_len; struct iovec *iov = NULL; From 6814dbf9414818861cdc21ba1f9799eb2e339b07 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 9 Aug 2014 09:07:25 -0400 Subject: [PATCH 180/272] drm/msm: avoid flood of kernel logs on faults 87e956e9 changed the fault handler to return -ENOSYS, which causes the iommu driver to print out a huge splat. Which wouldn't be quite so bad if nothing ever faulted. But seems like some EXA composite operations generate quite a lot of (seemingly harmless) faults. That is probably a userspace problem, but the huge increase in verbosity from iommu fault dumps makes things kind of unusable. We probably should actually log *some* message (not conditional on drm.debug). But ratelimit it. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_iommu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c index 099af483fdf0..7acdaa5688b7 100644 --- a/drivers/gpu/drm/msm/msm_iommu.c +++ b/drivers/gpu/drm/msm/msm_iommu.c @@ -27,8 +27,8 @@ struct msm_iommu { static int msm_fault_handler(struct iommu_domain *iommu, struct device *dev, unsigned long iova, int flags, void *arg) { - DBG("*** fault: iova=%08lx, flags=%d", iova, flags); - return -ENOSYS; + pr_warn_ratelimited("*** fault: iova=%08lx, flags=%d\n", iova, flags); + return 0; } static int msm_iommu_attach(struct msm_mmu *mmu, const char **names, int cnt) From 119ecb7fd3b5d072c2b29d4d030c623840554d71 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 4 Aug 2014 10:44:53 -0400 Subject: [PATCH 181/272] drm/msm/mdp4: request vblank during modeset This avoids a problem seen with weston (for example) where the display gets stuck in "black screen" if starting weston first thing after boot. Possibly mdp5 needs something similar. The downstream android fbdev driver always requests DMA_E (or DMA_P) when display is active, rather than only enabling it on-demand as the drm driver does, which I believe has the same end result. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c index 74cebb51e8c2..c6c80ea28c35 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c @@ -397,6 +397,7 @@ static void mdp4_crtc_prepare(struct drm_crtc *crtc) struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc); DBG("%s", mdp4_crtc->name); /* make sure we hold a ref to mdp clks while setting up mode: */ + drm_crtc_vblank_get(crtc); mdp4_enable(get_kms(crtc)); mdp4_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); } @@ -407,6 +408,7 @@ static void mdp4_crtc_commit(struct drm_crtc *crtc) crtc_flush(crtc); /* drop the ref to mdp clk's that we got in prepare: */ mdp4_disable(get_kms(crtc)); + drm_crtc_vblank_put(crtc); } static int mdp4_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, From 12313c2aa81d669493c60438e42571d0b8e850c4 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 4 Aug 2014 15:45:16 -0400 Subject: [PATCH 182/272] drm/msm: fix compile error for non-dt builds Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index b447c01ad89c..26ee80db17af 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -974,12 +974,11 @@ static int msm_pdev_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(devnames); i++) { struct device *dev; - int ret; dev = bus_find_device_by_name(&platform_bus_type, NULL, devnames[i]); if (!dev) { - dev_info(master, "still waiting for %s\n", devnames[i]); + dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]); return -EPROBE_DEFER; } From 0d9509d2119528d176f89d67d3004cd92942b57a Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 14 Aug 2014 09:01:40 +0800 Subject: [PATCH 183/272] drm/msm: Fix missing unlock on error in msm_fbdev_create() Add the missing unlock before return from function msm_fbdev_create() in the error handling case. Signed-off-by: Wei Yongjun Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_fbdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 9c5221ce391a..ab5bfd2d0ebf 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -143,7 +143,7 @@ static int msm_fbdev_create(struct drm_fb_helper *helper, ret = msm_gem_get_iova_locked(fbdev->bo, 0, &paddr); if (ret) { dev_err(dev->dev, "failed to get buffer obj iova: %d\n", ret); - goto fail; + goto fail_unlock; } fbi = framebuffer_alloc(0, dev->dev); From e15693ef18e13e3e6bffe891fe140f18b8ff6d07 Mon Sep 17 00:00:00 2001 From: Toshiaki Makita Date: Tue, 26 Aug 2014 20:56:36 +0900 Subject: [PATCH 184/272] cfq-iosched: Fix wrong children_weight calculation cfq_group_service_tree_add() is applying new_weight at the beginning of the function via cfq_update_group_weight(). This actually allows weight to change between adding it to and subtracting it from children_weight, and triggers WARN_ON_ONCE() in cfq_group_service_tree_del(), or even causes oops by divide error during vfr calculation in cfq_group_service_tree_add(). The detailed scenario is as follows: 1. Create blkio cgroups X and Y as a child of X. Set X's weight to 500 and perform some I/O to apply new_weight. This X's I/O completes before starting Y's I/O. 2. Y starts I/O and cfq_group_service_tree_add() is called with Y. 3. cfq_group_service_tree_add() walks up the tree during children_weight calculation and adds parent X's weight (500) to children_weight of root. children_weight becomes 500. 4. Set X's weight to 1000. 5. X starts I/O and cfq_group_service_tree_add() is called with X. 6. cfq_group_service_tree_add() applies its new_weight (1000). 7. I/O of Y completes and cfq_group_service_tree_del() is called with Y. 8. I/O of X completes and cfq_group_service_tree_del() is called with X. 9. cfq_group_service_tree_del() subtracts X's weight (1000) from children_weight of root. children_weight becomes -500. This triggers WARN_ON_ONCE(). 10. Set X's weight to 500. 11. X starts I/O and cfq_group_service_tree_add() is called with X. 12. cfq_group_service_tree_add() applies its new_weight (500) and adds it to children_weight of root. children_weight becomes 0. Calcularion of vfr triggers oops by divide error. weight should be updated right before adding it to children_weight. Reported-by: Ruki Sekiya Signed-off-by: Toshiaki Makita Acked-by: Tejun Heo Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe --- block/cfq-iosched.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index cadc37841744..d7494637c5db 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1275,12 +1275,16 @@ __cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) static void cfq_update_group_weight(struct cfq_group *cfqg) { - BUG_ON(!RB_EMPTY_NODE(&cfqg->rb_node)); - if (cfqg->new_weight) { cfqg->weight = cfqg->new_weight; cfqg->new_weight = 0; } +} + +static void +cfq_update_group_leaf_weight(struct cfq_group *cfqg) +{ + BUG_ON(!RB_EMPTY_NODE(&cfqg->rb_node)); if (cfqg->new_leaf_weight) { cfqg->leaf_weight = cfqg->new_leaf_weight; @@ -1299,7 +1303,7 @@ cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) /* add to the service tree */ BUG_ON(!RB_EMPTY_NODE(&cfqg->rb_node)); - cfq_update_group_weight(cfqg); + cfq_update_group_leaf_weight(cfqg); __cfq_group_service_tree_add(st, cfqg); /* @@ -1323,6 +1327,7 @@ cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) */ while ((parent = cfqg_parent(pos))) { if (propagate) { + cfq_update_group_weight(pos); propagate = !parent->nr_active++; parent->children_weight += pos->weight; } From 054e01d681b457ab50bdf1f22c0f0d1ad03afd70 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Tue, 26 Aug 2014 14:45:54 +0200 Subject: [PATCH 185/272] drm/radeon: save/restore the PD addr on suspend/resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This fixes a problem with GPU resets and TLB flushes on SI/CIK. Signed-off-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/cik.c | 20 ++++++++++++++------ drivers/gpu/drm/radeon/ni.c | 9 ++++++++- drivers/gpu/drm/radeon/radeon.h | 2 ++ drivers/gpu/drm/radeon/si.c | 15 +++++++++++++-- 4 files changed, 37 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 79a5a5519bd6..e57698847be5 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -5749,20 +5749,17 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev) WREG32(0x15D8, 0); WREG32(0x15DC, 0); - /* empty context1-15 */ - /* FIXME start with 4G, once using 2 level pt switch to full - * vm size space - */ + /* restore context1-15 */ /* set vm size, must be a multiple of 4 */ WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0); WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn); for (i = 1; i < 16; i++) { if (i < 8) WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2), - rdev->gart.table_addr >> 12); + rdev->vm_manager.saved_table_addr[i]); else WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2), - rdev->gart.table_addr >> 12); + rdev->vm_manager.saved_table_addr[i]); } /* enable context1-15 */ @@ -5827,6 +5824,17 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev) */ static void cik_pcie_gart_disable(struct radeon_device *rdev) { + unsigned i; + + for (i = 1; i < 16; ++i) { + uint32_t reg; + if (i < 8) + reg = VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2); + else + reg = VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2); + rdev->vm_manager.saved_table_addr[i] = RREG32(reg); + } + /* Disable all tables */ WREG32(VM_CONTEXT0_CNTL, 0); WREG32(VM_CONTEXT1_CNTL, 0); diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index ba89375f197f..3faee58946dd 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1271,7 +1271,7 @@ static int cayman_pcie_gart_enable(struct radeon_device *rdev) WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR + (i << 2), 0); WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR + (i << 2), rdev->vm_manager.max_pfn); WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2), - rdev->gart.table_addr >> 12); + rdev->vm_manager.saved_table_addr[i]); } /* enable context1-7 */ @@ -1303,6 +1303,13 @@ static int cayman_pcie_gart_enable(struct radeon_device *rdev) static void cayman_pcie_gart_disable(struct radeon_device *rdev) { + unsigned i; + + for (i = 1; i < 8; ++i) { + rdev->vm_manager.saved_table_addr[i] = RREG32( + VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2)); + } + /* Disable all tables */ WREG32(VM_CONTEXT0_CNTL, 0); WREG32(VM_CONTEXT1_CNTL, 0); diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index b281886f6f51..5f05b4c84338 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -915,6 +915,8 @@ struct radeon_vm_manager { u64 vram_base_offset; /* is vm enabled? */ bool enabled; + /* for hw to save the PD addr on suspend/resume */ + uint32_t saved_table_addr[RADEON_NUM_VM]; }; /* diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index a1274a31405c..739e0a5349f8 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -4290,10 +4290,10 @@ static int si_pcie_gart_enable(struct radeon_device *rdev) for (i = 1; i < 16; i++) { if (i < 8) WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2), - rdev->gart.table_addr >> 12); + rdev->vm_manager.saved_table_addr[i]); else WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2), - rdev->gart.table_addr >> 12); + rdev->vm_manager.saved_table_addr[i]); } /* enable context1-15 */ @@ -4325,6 +4325,17 @@ static int si_pcie_gart_enable(struct radeon_device *rdev) static void si_pcie_gart_disable(struct radeon_device *rdev) { + unsigned i; + + for (i = 1; i < 16; ++i) { + uint32_t reg; + if (i < 8) + reg = VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2); + else + reg = VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2); + rdev->vm_manager.saved_table_addr[i] = RREG32(reg); + } + /* Disable all tables */ WREG32(VM_CONTEXT0_CNTL, 0); WREG32(VM_CONTEXT1_CNTL, 0); From 0a5f6e9d60e71e4b6dbeabd97bc887d6b2b0f0c8 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 25 Aug 2014 14:52:15 -0400 Subject: [PATCH 186/272] drm/radeon: handle broken disabled rb mask gracefully (6xx/7xx) (v2) This is a port of cedb655a3a7764c3fd946077944383c9e0e68dd4 to older asics. Fixes a possible divide by 0 if the harvest register is invalid. v2: drop some additional harvest munging. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/r600.c | 26 ++++++++------------------ drivers/gpu/drm/radeon/rv770.c | 23 ++++++++--------------- 2 files changed, 16 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index e8bf0ea2dade..e616eb5f6e7a 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1812,7 +1812,6 @@ static void r600_gpu_init(struct radeon_device *rdev) { u32 tiling_config; u32 ramcfg; - u32 cc_rb_backend_disable; u32 cc_gc_shader_pipe_config; u32 tmp; int i, j; @@ -1939,29 +1938,20 @@ static void r600_gpu_init(struct radeon_device *rdev) } tiling_config |= BANK_SWAPS(1); - cc_rb_backend_disable = RREG32(CC_RB_BACKEND_DISABLE) & 0x00ff0000; - tmp = R6XX_MAX_BACKENDS - - r600_count_pipe_bits((cc_rb_backend_disable >> 16) & R6XX_MAX_BACKENDS_MASK); - if (tmp < rdev->config.r600.max_backends) { - rdev->config.r600.max_backends = tmp; - } - cc_gc_shader_pipe_config = RREG32(CC_GC_SHADER_PIPE_CONFIG) & 0x00ffff00; - tmp = R6XX_MAX_PIPES - - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 8) & R6XX_MAX_PIPES_MASK); - if (tmp < rdev->config.r600.max_pipes) { - rdev->config.r600.max_pipes = tmp; - } - tmp = R6XX_MAX_SIMDS - - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R6XX_MAX_SIMDS_MASK); - if (tmp < rdev->config.r600.max_simds) { - rdev->config.r600.max_simds = tmp; - } tmp = rdev->config.r600.max_simds - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R6XX_MAX_SIMDS_MASK); rdev->config.r600.active_simds = tmp; disabled_rb_mask = (RREG32(CC_RB_BACKEND_DISABLE) >> 16) & R6XX_MAX_BACKENDS_MASK; + tmp = 0; + for (i = 0; i < rdev->config.r600.max_backends; i++) + tmp |= (1 << i); + /* if all the backends are disabled, fix it up here */ + if ((disabled_rb_mask & tmp) == tmp) { + for (i = 0; i < rdev->config.r600.max_backends; i++) + disabled_rb_mask &= ~(1 << i); + } tmp = (tiling_config & PIPE_TILING__MASK) >> PIPE_TILING__SHIFT; tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.r600.max_backends, R6XX_MAX_BACKENDS, disabled_rb_mask); diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 2983f17ea1b3..d9f5ce715c9b 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -1177,7 +1177,6 @@ static void rv770_gpu_init(struct radeon_device *rdev) u32 hdp_host_path_cntl; u32 sq_dyn_gpr_size_simd_ab_0; u32 gb_tiling_config = 0; - u32 cc_rb_backend_disable = 0; u32 cc_gc_shader_pipe_config = 0; u32 mc_arb_ramcfg; u32 db_debug4, tmp; @@ -1311,21 +1310,7 @@ static void rv770_gpu_init(struct radeon_device *rdev) WREG32(SPI_CONFIG_CNTL, 0); } - cc_rb_backend_disable = RREG32(CC_RB_BACKEND_DISABLE) & 0x00ff0000; - tmp = R7XX_MAX_BACKENDS - r600_count_pipe_bits(cc_rb_backend_disable >> 16); - if (tmp < rdev->config.rv770.max_backends) { - rdev->config.rv770.max_backends = tmp; - } - cc_gc_shader_pipe_config = RREG32(CC_GC_SHADER_PIPE_CONFIG) & 0xffffff00; - tmp = R7XX_MAX_PIPES - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 8) & R7XX_MAX_PIPES_MASK); - if (tmp < rdev->config.rv770.max_pipes) { - rdev->config.rv770.max_pipes = tmp; - } - tmp = R7XX_MAX_SIMDS - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R7XX_MAX_SIMDS_MASK); - if (tmp < rdev->config.rv770.max_simds) { - rdev->config.rv770.max_simds = tmp; - } tmp = rdev->config.rv770.max_simds - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R7XX_MAX_SIMDS_MASK); rdev->config.rv770.active_simds = tmp; @@ -1348,6 +1333,14 @@ static void rv770_gpu_init(struct radeon_device *rdev) rdev->config.rv770.tiling_npipes = rdev->config.rv770.max_tile_pipes; disabled_rb_mask = (RREG32(CC_RB_BACKEND_DISABLE) >> 16) & R7XX_MAX_BACKENDS_MASK; + tmp = 0; + for (i = 0; i < rdev->config.rv770.max_backends; i++) + tmp |= (1 << i); + /* if all the backends are disabled, fix it up here */ + if ((disabled_rb_mask & tmp) == tmp) { + for (i = 0; i < rdev->config.rv770.max_backends; i++) + disabled_rb_mask &= ~(1 << i); + } tmp = (gb_tiling_config & PIPE_TILING__MASK) >> PIPE_TILING__SHIFT; tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.rv770.max_backends, R7XX_MAX_BACKENDS, disabled_rb_mask); From 5b6b80aeb21091ed3030b9b6aae597d81326f1aa Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 25 Aug 2014 21:07:47 -0700 Subject: [PATCH 187/272] USB: sisusb: add device id for Magic Control USB video I have a j5 create (JUA210) USB 2 video device and adding it device id to SIS USB video gets it to work. Signed-off-by: Stephen Hemminger Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 06b5d77cd9ad..633caf643122 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -3250,6 +3250,7 @@ static const struct usb_device_id sisusb_table[] = { { USB_DEVICE(0x0711, 0x0918) }, { USB_DEVICE(0x0711, 0x0920) }, { USB_DEVICE(0x0711, 0x0950) }, + { USB_DEVICE(0x0711, 0x5200) }, { USB_DEVICE(0x182d, 0x021c) }, { USB_DEVICE(0x182d, 0x0269) }, { } From 8fd46439e1f5a7f86d76a08733459b74debd9468 Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Tue, 26 Aug 2014 11:51:38 +0300 Subject: [PATCH 188/272] ARM: dts: omap54xx-clocks: Fix the l3 and l4 clock rates Similarly to DRA7, OMAP5 has l3 and l4 clock rates incorrectly calculated. Fixed by using proper divider clock types for the clock nodes. Signed-off-by: Tero Kristo Reported-by: Tomi Valkeinen Tested-by: Tomi Valkeinen Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap54xx-clocks.dtsi | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/arch/arm/boot/dts/omap54xx-clocks.dtsi b/arch/arm/boot/dts/omap54xx-clocks.dtsi index e67a23b5d788..58c27466f012 100644 --- a/arch/arm/boot/dts/omap54xx-clocks.dtsi +++ b/arch/arm/boot/dts/omap54xx-clocks.dtsi @@ -367,10 +367,12 @@ l3_iclk_div: l3_iclk_div { #clock-cells = <0>; - compatible = "fixed-factor-clock"; + compatible = "ti,divider-clock"; + ti,max-div = <2>; + ti,bit-shift = <4>; + reg = <0x100>; clocks = <&dpll_core_h12x2_ck>; - clock-mult = <1>; - clock-div = <1>; + ti,index-power-of-two; }; gpu_l3_iclk: gpu_l3_iclk { @@ -383,10 +385,12 @@ l4_root_clk_div: l4_root_clk_div { #clock-cells = <0>; - compatible = "fixed-factor-clock"; + compatible = "ti,divider-clock"; + ti,max-div = <2>; + ti,bit-shift = <8>; + reg = <0x100>; clocks = <&l3_iclk_div>; - clock-mult = <1>; - clock-div = <1>; + ti,index-power-of-two; }; slimbus1_slimbus_clk: slimbus1_slimbus_clk { From aee7af356e151494d5014f57b33460b162f181b5 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 25 Aug 2014 22:33:12 -0400 Subject: [PATCH 189/272] NFSv4: Fix problems with close in the presence of a delegation In the presence of delegations, we can no longer assume that the state->n_rdwr, state->n_rdonly, state->n_wronly reflect the open stateid share mode, and so we need to calculate the initial value for calldata->arg.fmode using the state->flags. Reported-by: James Drews Fixes: 88069f77e1ac5 (NFSv41: Fix a potential state leakage when...) Cc: stable@vger.kernel.org # 2.6.33+ Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 75ae8d22f067..ff94a2f36051 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2601,6 +2601,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) struct nfs4_closedata *calldata = data; struct nfs4_state *state = calldata->state; struct inode *inode = calldata->inode; + bool is_rdonly, is_wronly, is_rdwr; int call_close = 0; dprintk("%s: begin!\n", __func__); @@ -2608,18 +2609,24 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) goto out_wait; task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; - calldata->arg.fmode = FMODE_READ|FMODE_WRITE; spin_lock(&state->owner->so_lock); + is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); + is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); + is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); + /* Calculate the current open share mode */ + calldata->arg.fmode = 0; + if (is_rdonly || is_rdwr) + calldata->arg.fmode |= FMODE_READ; + if (is_wronly || is_rdwr) + calldata->arg.fmode |= FMODE_WRITE; /* Calculate the change in open mode */ if (state->n_rdwr == 0) { if (state->n_rdonly == 0) { - call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); - call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); + call_close |= is_rdonly || is_rdwr; calldata->arg.fmode &= ~FMODE_READ; } if (state->n_wronly == 0) { - call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); - call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); + call_close |= is_wronly || is_rdwr; calldata->arg.fmode &= ~FMODE_WRITE; } } From 412f6c4c26fb1eba8844290663837561ac53fa6e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 25 Aug 2014 22:09:08 -0400 Subject: [PATCH 190/272] NFSv4: Don't clear the open state when we just did an OPEN_DOWNGRADE If we did an OPEN_DOWNGRADE, then the right thing to do on success, is to apply the new open mode to the struct nfs4_state. Instead, we were unconditionally clearing the state, making it appear to our state machinery as if we had just performed a CLOSE. Fixes: 226056c5c312b (NFSv4: Use correct locking when updating nfs4_state...) Cc: stable@vger.kernel.org # 3.15+ Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ff94a2f36051..7dd8aca31c29 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2560,6 +2560,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) struct nfs4_closedata *calldata = data; struct nfs4_state *state = calldata->state; struct nfs_server *server = NFS_SERVER(calldata->inode); + nfs4_stateid *res_stateid = NULL; dprintk("%s: begin!\n", __func__); if (!nfs4_sequence_done(task, &calldata->res.seq_res)) @@ -2570,12 +2571,12 @@ static void nfs4_close_done(struct rpc_task *task, void *data) */ switch (task->tk_status) { case 0: - if (calldata->roc) + res_stateid = &calldata->res.stateid; + if (calldata->arg.fmode == 0 && calldata->roc) pnfs_roc_set_barrier(state->inode, calldata->roc_barrier); - nfs_clear_open_stateid(state, &calldata->res.stateid, 0); renew_lease(server, calldata->timestamp); - goto out_release; + break; case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_OLD_STATEID: @@ -2589,7 +2590,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) goto out_release; } } - nfs_clear_open_stateid(state, NULL, calldata->arg.fmode); + nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode); out_release: nfs_release_seqid(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, calldata->res.fattr); From f87d928f6d98644d39809a013a22f981d39017cf Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 24 Aug 2014 14:46:48 -0400 Subject: [PATCH 191/272] NFSv3: Fix another acl regression When creating a new object on the NFS server, we should not be sending posix setacl requests unless the preceding posix_acl_create returned a non-trivial acl. Doing so, causes Solaris servers in particular to return an EINVAL. Fixes: 013cdf1088d72 (nfs: use generic posix ACL infrastructure,,,) Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1132786 Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Trond Myklebust --- fs/nfs/nfs3acl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index d0fec260132a..24c6898159cc 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -129,7 +129,10 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, .rpc_argp = &args, .rpc_resp = &fattr, }; - int status; + int status = 0; + + if (acl == NULL && (!S_ISDIR(inode->i_mode) || dfacl == NULL)) + goto out; status = -EOPNOTSUPP; if (!nfs_server_capable(inode, NFS_CAP_ACLS)) From 270a00963cd367214e92e6deadb3bde65b49b16a Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sun, 24 Aug 2014 18:17:17 -0700 Subject: [PATCH 192/272] scripts/kernel-doc: recognize __meminit Fix scripts/kernel-doc to recognize __meminit in a function prototype and to strip it, as done with many other attributes. Fixes this warning: Warning(..//mm/page_alloc.c:2973): cannot understand function prototype: 'void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask) ' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- scripts/kernel-doc | 1 + 1 file changed, 1 insertion(+) diff --git a/scripts/kernel-doc b/scripts/kernel-doc index 16a07cfa4d34..70bea942b413 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -2085,6 +2085,7 @@ sub dump_function($$) { $prototype =~ s/^noinline +//; $prototype =~ s/__init +//; $prototype =~ s/__init_or_module +//; + $prototype =~ s/__meminit +//; $prototype =~ s/__must_check +//; $prototype =~ s/__weak +//; my $define = $prototype =~ s/^#\s*define\s+//; #ak added From ac490f4dca9476bf8a309a2cae92ca68b8c5fca6 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Sun, 24 Aug 2014 18:17:32 -0700 Subject: [PATCH 193/272] Documentation: this_cpu_ops.txt: Update description of this_cpu_ops Update the description for per cpu operations to clarify use cases of this_cpu operations and add considerations for remote access. Signed-off-by: Pranith Kumar Signed-off-by: Christoph Lameter Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- Documentation/this_cpu_ops.txt | 209 ++++++++++++++++++++++++++------- 1 file changed, 169 insertions(+), 40 deletions(-) diff --git a/Documentation/this_cpu_ops.txt b/Documentation/this_cpu_ops.txt index 1a4ce7e3e05f..0ec995712176 100644 --- a/Documentation/this_cpu_ops.txt +++ b/Documentation/this_cpu_ops.txt @@ -2,26 +2,26 @@ this_cpu operations ------------------- this_cpu operations are a way of optimizing access to per cpu -variables associated with the *currently* executing processor through -the use of segment registers (or a dedicated register where the cpu -permanently stored the beginning of the per cpu area for a specific -processor). +variables associated with the *currently* executing processor. This is +done through the use of segment registers (or a dedicated register where +the cpu permanently stored the beginning of the per cpu area for a +specific processor). -The this_cpu operations add a per cpu variable offset to the processor -specific percpu base and encode that operation in the instruction +this_cpu operations add a per cpu variable offset to the processor +specific per cpu base and encode that operation in the instruction operating on the per cpu variable. -This means there are no atomicity issues between the calculation of +This means that there are no atomicity issues between the calculation of the offset and the operation on the data. Therefore it is not -necessary to disable preempt or interrupts to ensure that the +necessary to disable preemption or interrupts to ensure that the processor is not changed between the calculation of the address and the operation on the data. Read-modify-write operations are of particular interest. Frequently processors have special lower latency instructions that can operate -without the typical synchronization overhead but still provide some -sort of relaxed atomicity guarantee. The x86 for example can execute -RMV (Read Modify Write) instructions like inc/dec/cmpxchg without the +without the typical synchronization overhead, but still provide some +sort of relaxed atomicity guarantees. The x86, for example, can execute +RMW (Read Modify Write) instructions like inc/dec/cmpxchg without the lock prefix and the associated latency penalty. Access to the variable without the lock prefix is not synchronized but @@ -30,6 +30,38 @@ data specific to the currently executing processor. Only the current processor should be accessing that variable and therefore there are no concurrency issues with other processors in the system. +Please note that accesses by remote processors to a per cpu area are +exceptional situations and may impact performance and/or correctness +(remote write operations) of local RMW operations via this_cpu_*. + +The main use of the this_cpu operations has been to optimize counter +operations. + +The following this_cpu() operations with implied preemption protection +are defined. These operations can be used without worrying about +preemption and interrupts. + + this_cpu_add() + this_cpu_read(pcp) + this_cpu_write(pcp, val) + this_cpu_add(pcp, val) + this_cpu_and(pcp, val) + this_cpu_or(pcp, val) + this_cpu_add_return(pcp, val) + this_cpu_xchg(pcp, nval) + this_cpu_cmpxchg(pcp, oval, nval) + this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) + this_cpu_sub(pcp, val) + this_cpu_inc(pcp) + this_cpu_dec(pcp) + this_cpu_sub_return(pcp, val) + this_cpu_inc_return(pcp) + this_cpu_dec_return(pcp) + + +Inner working of this_cpu operations +------------------------------------ + On x86 the fs: or the gs: segment registers contain the base of the per cpu area. It is then possible to simply use the segment override to relocate a per cpu relative address to the proper per cpu area for @@ -48,22 +80,21 @@ results in a single instruction mov ax, gs:[x] instead of a sequence of calculation of the address and then a fetch -from that address which occurs with the percpu operations. Before +from that address which occurs with the per cpu operations. Before this_cpu_ops such sequence also required preempt disable/enable to prevent the kernel from moving the thread to a different processor while the calculation is performed. -The main use of the this_cpu operations has been to optimize counter -operations. +Consider the following this_cpu operation: this_cpu_inc(x) -results in the following single instruction (no lock prefix!) +The above results in the following single instruction (no lock prefix!) inc gs:[x] instead of the following operations required if there is no segment -register. +register: int *y; int cpu; @@ -73,10 +104,10 @@ register. (*y)++; put_cpu(); -Note that these operations can only be used on percpu data that is +Note that these operations can only be used on per cpu data that is reserved for a specific processor. Without disabling preemption in the surrounding code this_cpu_inc() will only guarantee that one of the -percpu counters is correctly incremented. However, there is no +per cpu counters is correctly incremented. However, there is no guarantee that the OS will not move the process directly before or after the this_cpu instruction is executed. In general this means that the value of the individual counters for each processor are @@ -86,9 +117,9 @@ that is of interest. Per cpu variables are used for performance reasons. Bouncing cache lines can be avoided if multiple processors concurrently go through the same code paths. Since each processor has its own per cpu -variables no concurrent cacheline updates take place. The price that +variables no concurrent cache line updates take place. The price that has to be paid for this optimization is the need to add up the per cpu -counters when the value of the counter is needed. +counters when the value of a counter is needed. Special operations: @@ -100,33 +131,39 @@ Takes the offset of a per cpu variable (&x !) and returns the address of the per cpu variable that belongs to the currently executing processor. this_cpu_ptr avoids multiple steps that the common get_cpu/put_cpu sequence requires. No processor number is -available. Instead the offset of the local per cpu area is simply -added to the percpu offset. +available. Instead, the offset of the local per cpu area is simply +added to the per cpu offset. +Note that this operation is usually used in a code segment when +preemption has been disabled. The pointer is then used to +access local per cpu data in a critical section. When preemption +is re-enabled this pointer is usually no longer useful since it may +no longer point to per cpu data of the current processor. Per cpu variables and offsets ----------------------------- -Per cpu variables have *offsets* to the beginning of the percpu +Per cpu variables have *offsets* to the beginning of the per cpu area. They do not have addresses although they look like that in the code. Offsets cannot be directly dereferenced. The offset must be -added to a base pointer of a percpu area of a processor in order to +added to a base pointer of a per cpu area of a processor in order to form a valid address. Therefore the use of x or &x outside of the context of per cpu operations is invalid and will generally be treated like a NULL pointer dereference. -In the context of per cpu operations + DEFINE_PER_CPU(int, x); - x is a per cpu variable. Most this_cpu operations take a cpu - variable. +In the context of per cpu operations the above implies that x is a per +cpu variable. Most this_cpu operations take a cpu variable. - &x is the *offset* a per cpu variable. this_cpu_ptr() takes - the offset of a per cpu variable which makes this look a bit - strange. + int __percpu *p = &x; +&x and hence p is the *offset* of a per cpu variable. this_cpu_ptr() +takes the offset of a per cpu variable which makes this look a bit +strange. Operations on a field of a per cpu structure @@ -152,7 +189,7 @@ If we have an offset to struct s: struct s __percpu *ps = &p; - z = this_cpu_dec(ps->m); + this_cpu_dec(ps->m); z = this_cpu_inc_return(ps->n); @@ -172,29 +209,52 @@ if we do not make use of this_cpu ops later to manipulate fields: Variants of this_cpu ops ------------------------- -this_cpu ops are interrupt safe. Some architecture do not support +this_cpu ops are interrupt safe. Some architectures do not support these per cpu local operations. In that case the operation must be replaced by code that disables interrupts, then does the operations -that are guaranteed to be atomic and then reenable interrupts. Doing +that are guaranteed to be atomic and then re-enable interrupts. Doing so is expensive. If there are other reasons why the scheduler cannot change the processor we are executing on then there is no reason to -disable interrupts. For that purpose the __this_cpu operations are -provided. For example. +disable interrupts. For that purpose the following __this_cpu operations +are provided. - __this_cpu_inc(x); +These operations have no guarantee against concurrent interrupts or +preemption. If a per cpu variable is not used in an interrupt context +and the scheduler cannot preempt, then they are safe. If any interrupts +still occur while an operation is in progress and if the interrupt too +modifies the variable, then RMW actions can not be guaranteed to be +safe. -Will increment x and will not fallback to code that disables + __this_cpu_add() + __this_cpu_read(pcp) + __this_cpu_write(pcp, val) + __this_cpu_add(pcp, val) + __this_cpu_and(pcp, val) + __this_cpu_or(pcp, val) + __this_cpu_add_return(pcp, val) + __this_cpu_xchg(pcp, nval) + __this_cpu_cmpxchg(pcp, oval, nval) + __this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) + __this_cpu_sub(pcp, val) + __this_cpu_inc(pcp) + __this_cpu_dec(pcp) + __this_cpu_sub_return(pcp, val) + __this_cpu_inc_return(pcp) + __this_cpu_dec_return(pcp) + + +Will increment x and will not fall-back to code that disables interrupts on platforms that cannot accomplish atomicity through address relocation and a Read-Modify-Write operation in the same instruction. - &this_cpu_ptr(pp)->n vs this_cpu_ptr(&pp->n) -------------------------------------------- The first operation takes the offset and forms an address and then -adds the offset of the n field. +adds the offset of the n field. This may result in two add +instructions emitted by the compiler. The second one first adds the two offsets and then does the relocation. IMHO the second form looks cleaner and has an easier time @@ -202,4 +262,73 @@ with (). The second form also is consistent with the way this_cpu_read() and friends are used. -Christoph Lameter, April 3rd, 2013 +Remote access to per cpu data +------------------------------ + +Per cpu data structures are designed to be used by one cpu exclusively. +If you use the variables as intended, this_cpu_ops() are guaranteed to +be "atomic" as no other CPU has access to these data structures. + +There are special cases where you might need to access per cpu data +structures remotely. It is usually safe to do a remote read access +and that is frequently done to summarize counters. Remote write access +something which could be problematic because this_cpu ops do not +have lock semantics. A remote write may interfere with a this_cpu +RMW operation. + +Remote write accesses to percpu data structures are highly discouraged +unless absolutely necessary. Please consider using an IPI to wake up +the remote CPU and perform the update to its per cpu area. + +To access per-cpu data structure remotely, typically the per_cpu_ptr() +function is used: + + + DEFINE_PER_CPU(struct data, datap); + + struct data *p = per_cpu_ptr(&datap, cpu); + +This makes it explicit that we are getting ready to access a percpu +area remotely. + +You can also do the following to convert the datap offset to an address + + struct data *p = this_cpu_ptr(&datap); + +but, passing of pointers calculated via this_cpu_ptr to other cpus is +unusual and should be avoided. + +Remote access are typically only for reading the status of another cpus +per cpu data. Write accesses can cause unique problems due to the +relaxed synchronization requirements for this_cpu operations. + +One example that illustrates some concerns with write operations is +the following scenario that occurs because two per cpu variables +share a cache-line but the relaxed synchronization is applied to +only one process updating the cache-line. + +Consider the following example + + + struct test { + atomic_t a; + int b; + }; + + DEFINE_PER_CPU(struct test, onecacheline); + +There is some concern about what would happen if the field 'a' is updated +remotely from one processor and the local processor would use this_cpu ops +to update field b. Care should be taken that such simultaneous accesses to +data within the same cache line are avoided. Also costly synchronization +may be necessary. IPIs are generally recommended in such scenarios instead +of a remote write to the per cpu area of another processor. + +Even in cases where the remote writes are rare, please bear in +mind that a remote write will evict the cache line from the processor +that most likely will access it. If the processor wakes up and finds a +missing local cache line of a per cpu area, its performance and hence +the wake up times will be affected. + +Christoph Lameter, August 4th, 2014 +Pranith Kumar, Aug 2nd, 2014 From 72ad366f687d45f30a82d8b6e70ce757b21b5aab Mon Sep 17 00:00:00 2001 From: Andreas Noever Date: Tue, 26 Aug 2014 17:42:21 +0200 Subject: [PATCH 194/272] thunderbolt: Clear hops before overwriting Zero hops in tb_path_activate before writing a new path. This fixes the following scenario: - Boot with a coldplugged device - Unplug device - Plug device back in - PCI hotplug fails The hotplug operation fails because our new path matches the (now defunct) path which was setup by the firmware for the coldplugged device. By writing zeros before writing our path configuration we can force thunderbolt to retrain the path. Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/path.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/thunderbolt/path.c b/drivers/thunderbolt/path.c index 8fcf8a7b6c22..9562cd026dc0 100644 --- a/drivers/thunderbolt/path.c +++ b/drivers/thunderbolt/path.c @@ -150,7 +150,26 @@ int tb_path_activate(struct tb_path *path) /* Activate hops. */ for (i = path->path_length - 1; i >= 0; i--) { - struct tb_regs_hop hop; + struct tb_regs_hop hop = { 0 }; + + /* + * We do (currently) not tear down paths setup by the firmeware. + * If a firmware device is unplugged and plugged in again then + * it can happen that we reuse some of the hops from the (now + * defunct) firmeware path. This causes the hotplug operation to + * fail (the pci device does not show up). Clearing the hop + * before overwriting it fixes the problem. + * + * Should be removed once we discover and tear down firmeware + * paths. + */ + res = tb_port_write(path->hops[i].in_port, &hop, TB_CFG_HOPS, + 2 * path->hops[i].in_hop_index, 2); + if (res) { + __tb_path_deactivate_hops(path, i); + __tb_path_deallocate_nfc(path, 0); + goto err; + } /* dword 0 */ hop.next_hop = path->hops[i].next_hop_index; From bdd405d2a5287bdb9b04670ea255e1f122138e66 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 4 Aug 2014 12:44:46 +0300 Subject: [PATCH 195/272] usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1 If user specifies that USB autosuspend must be disabled by module parameter "usbcore.autosuspend=-1" then we must prevent autosuspend of USB hub devices as well. commit 596d789a211d introduced in v3.8 changed the original behaivour and stopped respecting the usbcore.autosuspend parameter for hubs. Fixes: 596d789a211d "USB: set hub's default autosuspend delay as 0" Cc: [3.8+] Signed-off-by: Roger Quadros Tested-by: Michael Welling Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 97deb8e6b594..003cb6b1a6bf 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1728,8 +1728,12 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) * - Change autosuspend delay of hub can avoid unnecessary auto * suspend timer for hub, also may decrease power consumption * of USB bus. + * + * - If user has indicated to prevent autosuspend by passing + * usbcore.autosuspend = -1 then keep autosuspend disabled. */ - pm_runtime_set_autosuspend_delay(&hdev->dev, 0); + if (hdev->dev.power.autosuspend_delay >= 0) + pm_runtime_set_autosuspend_delay(&hdev->dev, 0); /* * Hubs have proper suspend/resume support, except for root hubs From 039368901ad0a6476c7ecf0cfe4f84d735e30135 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 5 Aug 2014 16:09:08 +0530 Subject: [PATCH 196/272] usb: ehci/ohci-exynos: Fix PHY getting sequence Since we want to keep support for both older usb-phys as well as the newer generic phys, lets first get the generic PHYs and fallback to older USB-PHYs only when we fail to get the former. This should fix the issue with ehci-exynos and ohci-exynos, wherein in the absence of SAMSUNG_USB2PHY config symbol, we end up getting the NOP_USB_XCEIV phy when the same is enabled. And thus the PHYs are not configured properly. Reported-by: Sachin Kamat Signed-off-by: Vivek Gautam Cc: Alan Stern Cc: Jingoo Han Tested-by: Sachin Kamat Acked-by: Jingoo Han Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-exynos.c | 40 ++++++++++++++--------------- drivers/usb/host/ohci-exynos.c | 47 ++++++++++++++++------------------ 2 files changed, 42 insertions(+), 45 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index cda0a2f5c467..2eed9a4f89a9 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -62,18 +62,6 @@ static int exynos_ehci_get_phy(struct device *dev, int phy_number; int ret = 0; - exynos_ehci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ehci->phy)) { - ret = PTR_ERR(exynos_ehci->phy); - if (ret != -ENXIO && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; - } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } else { - exynos_ehci->otg = exynos_ehci->phy->otg; - } - for_each_available_child_of_node(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); if (ret) { @@ -90,15 +78,27 @@ static int exynos_ehci_get_phy(struct device *dev, phy = devm_of_phy_get(dev, child, NULL); of_node_put(child); - if (IS_ERR(phy)) { - ret = PTR_ERR(phy); - if (ret != -ENOSYS && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; - } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } + if (IS_ERR(phy)) + /* Lets fallback to older USB-PHYs */ + goto usb_phy_old; exynos_ehci->phy_g[phy_number] = phy; + /* Make the older PHYs unavailable */ + exynos_ehci->phy = ERR_PTR(-ENXIO); + } + + return 0; + +usb_phy_old: + exynos_ehci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR(exynos_ehci->phy)) { + ret = PTR_ERR(exynos_ehci->phy); + if (ret != -ENXIO && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); + } else { + exynos_ehci->otg = exynos_ehci->phy->otg; } return ret; diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index a72ab8fe8cd3..7c48e3f3146b 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -51,27 +51,12 @@ static int exynos_ohci_get_phy(struct device *dev, int phy_number; int ret = 0; - exynos_ohci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ohci->phy)) { - ret = PTR_ERR(exynos_ohci->phy); - if (ret != -ENXIO && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; - } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } else { - exynos_ohci->otg = exynos_ohci->phy->otg; - } - /* * Getting generic phy: * We are keeping both types of phys as a part of transiting OHCI * to generic phy framework, so as to maintain backward compatibilty - * with old DTB. - * If there are existing devices using DTB files built from them, - * to remove the support for old bindings in this driver, - * we need to make sure that such devices have their DTBs - * updated to ones built from new DTS. + * with old DTB too. + * We fallback to older USB-PHYs when we fail to get generic PHYs. */ for_each_available_child_of_node(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); @@ -89,15 +74,27 @@ static int exynos_ohci_get_phy(struct device *dev, phy = devm_of_phy_get(dev, child, NULL); of_node_put(child); - if (IS_ERR(phy)) { - ret = PTR_ERR(phy); - if (ret != -ENOSYS && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; - } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } + if (IS_ERR(phy)) + /* Lets fallback to older USB-PHYs */ + goto usb_phy_old; exynos_ohci->phy_g[phy_number] = phy; + /* Make the older PHYs unavailable */ + exynos_ohci->phy = ERR_PTR(-ENXIO); + } + + return 0; + +usb_phy_old: + exynos_ohci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR(exynos_ohci->phy)) { + ret = PTR_ERR(exynos_ohci->phy); + if (ret != -ENXIO && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); + } else { + exynos_ohci->otg = exynos_ohci->phy->otg; } return ret; From 8fe7a268b18ebc89203c766b020b9e32f1cfeebf Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Wed, 20 Aug 2014 14:14:04 +0900 Subject: [PATCH 197/272] tomoyo: Fix pathname calculation breakage. Commit 7177a9c4b509 ("fs: call rename2 if exists") changed "struct inode_operations"->rename == NULL if "struct inode_operations"->rename2 != NULL . TOMOYO needs to check for both ->rename and ->rename2 , or a system on (e.g.) ext4 filesystem won't boot. Signed-off-by: Tetsuo Handa Signed-off-by: Serge E. Hallyn --- security/tomoyo/realpath.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index a3386d119425..bed745c8b1a3 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -173,7 +173,7 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer, * Use filesystem name if filesystem does not support rename() * operation. */ - if (!inode->i_op->rename) + if (!inode->i_op->rename && !inode->i_op->rename2) goto prepend_filesystem_name; } /* Prepend device name. */ @@ -282,7 +282,8 @@ char *tomoyo_realpath_from_path(struct path *path) * Get local name for filesystems without rename() operation * or dentry without vfsmount. */ - if (!path->mnt || !inode->i_op->rename) + if (!path->mnt || + (!inode->i_op->rename && !inode->i_op->rename2)) pos = tomoyo_get_local_path(path->dentry, buf, buf_len - 1); /* Get absolute name for the rest. */ From bf8147208eab4a026558dcd686f76410de6c1643 Mon Sep 17 00:00:00 2001 From: Rabeeh Khoury Date: Sat, 23 Aug 2014 10:11:21 +0100 Subject: [PATCH 198/272] ARM: dts: microsom-ar8035: MDIO pad must be set open drain This patch is important for the MicroSOM implementation due to the following details - 1. VIH of the Atheros phy is 1.7V. 2. NVCC_ENET which is the power domain of the MDIO pad is driven by the PHY's LDO (i.e. either 1.8v or 2.5v). 3. The MicroSOM implements an onbouard 1.6kohm pull up to 3.3v (R3000). In the case the PHY's LDO was 1.8v then there would be only a 100mV margin for the signal to be acknowledged as high (1.8v-1.7v). Due to that setting the pad as an open drain will let the 1.6kohm pull that signal high to 3.3 that assures enough margins to the PHY to be acked as '1' logic. Signed-off-by: Rabeeh Khoury Signed-off-by: Russell King Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi index d16066608e21..db9f45b2c573 100644 --- a/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi +++ b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi @@ -17,7 +17,7 @@ enet { pinctrl_microsom_enet_ar8035: microsom-enet-ar8035 { fsl,pins = < - MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0 + MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b8b0 MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0 /* AR8035 reset */ MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x130b0 From 1a22e7758eabc431d6d8af085dc6e4c5031779a6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 27 Aug 2014 08:19:05 +0200 Subject: [PATCH 199/272] ALSA: hda - Set up initial pins for Acer Aspire V5 Acer Aspire V5 doesn't set up the pins correctly at the cold boot while the pins are corrected after the warm reboot. This patch gives the proper pin configs statically in the driver as a workaround. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81561 Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index d71270a3f73f..d446ac3137b3 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4408,6 +4408,7 @@ enum { ALC292_FIXUP_TPT440_DOCK, ALC283_FIXUP_BXBT2807_MIC, ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED, + ALC282_FIXUP_ASPIRE_V5_PINS, }; static const struct hda_fixup alc269_fixups[] = { @@ -4855,6 +4856,22 @@ static const struct hda_fixup alc269_fixups[] = { .chained_before = true, .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE }, + [ALC282_FIXUP_ASPIRE_V5_PINS] = { + .type = HDA_FIXUP_PINS, + .v.pins = (const struct hda_pintbl[]) { + { 0x12, 0x90a60130 }, + { 0x14, 0x90170110 }, + { 0x17, 0x40000008 }, + { 0x18, 0x411111f0 }, + { 0x19, 0x411111f0 }, + { 0x1a, 0x411111f0 }, + { 0x1b, 0x411111f0 }, + { 0x1d, 0x40f89b2d }, + { 0x1e, 0x411111f0 }, + { 0x21, 0x0321101f }, + { }, + }, + }, }; @@ -4866,6 +4883,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1025, 0x0740, "Acer AO725", ALC271_FIXUP_HP_GATE_MIC_JACK), SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK), SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572), + SND_PCI_QUIRK(0x1025, 0x079b, "Acer Aspire V5-573G", ALC282_FIXUP_ASPIRE_V5_PINS), SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z), SND_PCI_QUIRK(0x1028, 0x05bd, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x05be, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), From c54def7bd64d7c0b6993336abcffb8444795bf38 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Wed, 27 Aug 2014 09:12:24 +0200 Subject: [PATCH 200/272] HID: magicmouse: sanity check report size in raw_event() callback The report passed to us from transport driver could potentially be arbitrarily large, therefore we better sanity-check it so that magicmouse_emit_touch() gets only valid values of raw_id. Cc: stable@vger.kernel.org Reported-by: Steven Vittitoe Signed-off-by: Jiri Kosina --- drivers/hid/hid-magicmouse.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index ecc2cbf300cc..29a74c1efcb8 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -290,6 +290,11 @@ static int magicmouse_raw_event(struct hid_device *hdev, if (size < 4 || ((size - 4) % 9) != 0) return 0; npoints = (size - 4) / 9; + if (npoints > 15) { + hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n", + size); + return 0; + } msc->ntouches = 0; for (ii = 0; ii < npoints; ii++) magicmouse_emit_touch(msc, ii, data + ii * 9 + 4); @@ -307,6 +312,11 @@ static int magicmouse_raw_event(struct hid_device *hdev, if (size < 6 || ((size - 6) % 8) != 0) return 0; npoints = (size - 6) / 8; + if (npoints > 15) { + hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n", + size); + return 0; + } msc->ntouches = 0; for (ii = 0; ii < npoints; ii++) magicmouse_emit_touch(msc, ii, data + ii * 8 + 6); From 844817e47eef14141cf59b8d5ac08dd11c0a9189 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Wed, 27 Aug 2014 09:13:15 +0200 Subject: [PATCH 201/272] HID: picolcd: sanity check report size in raw_event() callback The report passed to us from transport driver could potentially be arbitrarily large, therefore we better sanity-check it so that raw_data that we hold in picolcd_pending structure are always kept within proper bounds. Cc: stable@vger.kernel.org Reported-by: Steven Vittitoe Signed-off-by: Jiri Kosina --- drivers/hid/hid-picolcd_core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c index acbb021065ec..020df3c2e8b4 100644 --- a/drivers/hid/hid-picolcd_core.c +++ b/drivers/hid/hid-picolcd_core.c @@ -350,6 +350,12 @@ static int picolcd_raw_event(struct hid_device *hdev, if (!data) return 1; + if (size > 64) { + hid_warn(hdev, "invalid size value (%d) for picolcd raw event\n", + size); + return 0; + } + if (report->id == REPORT_KEY_STATE) { if (data->input_keys) ret = picolcd_raw_keypad(data, report, raw_data+1, size-1); From f395dcae7a68497751869cf0031fd8ce5e115f0a Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 27 Aug 2014 13:53:11 +0800 Subject: [PATCH 202/272] x86: irq: Fix bug in setting IOAPIC pin attributes Commit 15a3c7cc9154321fc3 "x86, irq: Introduce two helper functions to support irqdomain map operation" breaks LPSS ACPI enumerated devices. On startup, IOAPIC driver preallocates IRQ descriptors and programs IOAPIC pins with default level and polarity attributes for all legacy IRQs. Later legacy IRQ users may fail to set IOAPIC pin attributes if the requested attributes conflicts with the default IOAPIC pin attributes. So change mp_irqdomain_map() to allow the first legacy IRQ user to reprogram IOAPIC pin with different attributes. Reported-and-tested-by: Mika Westerberg Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Grant Likely Cc: Prarit Bhargava Link: http://lkml.kernel.org/r/1409118795-17046-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 29290f554e79..40a4aa3f4061 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1070,6 +1070,11 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, } if (flags & IOAPIC_MAP_ALLOC) { + /* special handling for legacy IRQs */ + if (irq < nr_legacy_irqs() && info->count == 1 && + mp_irqdomain_map(domain, irq, pin) != 0) + irq = -1; + if (irq > 0) info->count++; else if (info->count == 0) @@ -3896,7 +3901,15 @@ int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, info->polarity = 1; } info->node = NUMA_NO_NODE; - info->set = 1; + + /* + * setup_IO_APIC_irqs() programs all legacy IRQs with default + * trigger and polarity attributes. Don't set the flag for that + * case so the first legacy IRQ user could reprogram the pin + * with real trigger and polarity attributes. + */ + if (virq >= nr_legacy_irqs() || info->count) + info->set = 1; } set_io_apic_irq_attr(&attr, ioapic, hwirq, info->trigger, info->polarity); From 55f0fb6adb83a5883589e945cbce37e90615ea09 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin Date: Fri, 8 Aug 2014 14:12:17 +0100 Subject: [PATCH 203/272] ARM: 8127/1: module: add support for R_ARM_TARGET1 relocations Kernel module build with GCOV profiling fails to load with the following error: $ insmod test_module.ko test_module: unknown relocation: 38 insmod: can't insert 'test_module.ko': invalid module format This happens because constructor pointers in the .init_array section have not supported R_ARM_TARGET1 relocation type. Documentation (ELF for the ARM Architecture) says: "The relocation must be processed either in the same way as R_ARM_REL32 or as R_ARM_ABS32: a virtual platform must specify which method is used." Since kernel expects to see absolute addresses in .init_array R_ARM_TARGET1 relocation type should be treated the same way as R_ARM_ABS32. Signed-off-by: Andrey Ryabinin Signed-off-by: Russell King --- arch/arm/include/asm/elf.h | 1 + arch/arm/kernel/module.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index f4b46d39b9cf..afb9cafd3786 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -50,6 +50,7 @@ typedef struct user_fp elf_fpregset_t; #define R_ARM_ABS32 2 #define R_ARM_CALL 28 #define R_ARM_JUMP24 29 +#define R_ARM_TARGET1 38 #define R_ARM_V4BX 40 #define R_ARM_PREL31 42 #define R_ARM_MOVW_ABS_NC 43 diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c index 45e478157278..6a4dffefd357 100644 --- a/arch/arm/kernel/module.c +++ b/arch/arm/kernel/module.c @@ -91,6 +91,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex, break; case R_ARM_ABS32: + case R_ARM_TARGET1: *(u32 *)loc += sym->st_value; break; From 85868313177700d20644263a782351262d2aff84 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Fri, 15 Aug 2014 12:11:49 +0100 Subject: [PATCH 204/272] ARM: 8128/1: abort: don't clear the exclusive monitors The ARMv6 and ARMv7 early abort handlers clear the exclusive monitors upon entry to the kernel, but this is redundant: - We clear the monitors on every exception return since commit 200b812d0084 ("Clear the exclusive monitor when returning from an exception"), so this is not necessary to ensure the monitors are cleared before returning from a fault handler. - Any dummy STREX will target a temporary scratch area in memory, and may succeed or fail without corrupting useful data. Its status value will not be used. - Any other STREX in the kernel must be preceded by an LDREX, which will initialise the monitors consistently and will not depend on the earlier state of the monitors. Therefore we have no reason to care about the initial state of the exclusive monitors when a data abort is taken, and clearing the monitors prior to exception return (as we already do) is sufficient. This patch removes the redundant clearing of the exclusive monitors from the early abort handlers. Signed-off-by: Mark Rutland Acked-by: Will Deacon Cc: stable@vger.kernel.org Signed-off-by: Russell King --- arch/arm/mm/abort-ev6.S | 6 ------ arch/arm/mm/abort-ev7.S | 6 ------ 2 files changed, 12 deletions(-) diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S index 3815a8262af0..8c48c5c22a33 100644 --- a/arch/arm/mm/abort-ev6.S +++ b/arch/arm/mm/abort-ev6.S @@ -17,12 +17,6 @@ */ .align 5 ENTRY(v6_early_abort) -#ifdef CONFIG_CPU_V6 - sub r1, sp, #4 @ Get unused stack location - strex r0, r1, [r1] @ Clear the exclusive monitor -#elif defined(CONFIG_CPU_32v6K) - clrex -#endif mrc p15, 0, r1, c5, c0, 0 @ get FSR mrc p15, 0, r0, c6, c0, 0 @ get FAR /* diff --git a/arch/arm/mm/abort-ev7.S b/arch/arm/mm/abort-ev7.S index 703375277ba6..4812ad054214 100644 --- a/arch/arm/mm/abort-ev7.S +++ b/arch/arm/mm/abort-ev7.S @@ -13,12 +13,6 @@ */ .align 5 ENTRY(v7_early_abort) - /* - * The effect of data aborts on on the exclusive access monitor are - * UNPREDICTABLE. Do a CLREX to clear the state - */ - clrex - mrc p15, 0, r1, c5, c0, 0 @ get FSR mrc p15, 0, r0, c6, c0, 0 @ get FAR From 2c32c65e3726c773760038910be30cce1b4d4149 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Fri, 15 Aug 2014 12:11:50 +0100 Subject: [PATCH 205/272] ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex On revisions of Cortex-A15 prior to r3p3, a CLREX instruction at PL1 may falsely trigger a watchpoint exception, leading to potential data aborts during exception return and/or livelock. This patch resolves the issue in the following ways: - Replacing our uses of CLREX with a dummy STREX sequence instead (as we did for v6 CPUs). - Removing the clrex code from v7_exit_coherency_flush and derivatives, since this only exists as a minor performance improvement when non-cached exclusives are in use (Linux doesn't use these). Benchmarking on a variety of ARM cores revealed no measurable performance difference with this change applied, so the change is performed unconditionally and no new Kconfig entry is added. Signed-off-by: Mark Rutland Signed-off-by: Will Deacon Cc: stable@vger.kernel.org Signed-off-by: Russell King --- arch/arm/include/asm/cacheflush.h | 1 - arch/arm/kernel/entry-header.S | 29 +++++++++++++++-------------- arch/arm/mach-exynos/mcpm-exynos.c | 1 - 3 files changed, 15 insertions(+), 16 deletions(-) diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index fd43f7f55b70..79ecb4f34ffb 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -472,7 +472,6 @@ static inline void __sync_cache_range_r(volatile void *p, size_t size) "mcr p15, 0, r0, c1, c0, 0 @ set SCTLR \n\t" \ "isb \n\t" \ "bl v7_flush_dcache_"__stringify(level)" \n\t" \ - "clrex \n\t" \ "mrc p15, 0, r0, c1, c0, 1 @ get ACTLR \n\t" \ "bic r0, r0, #(1 << 6) @ disable local coherency \n\t" \ "mcr p15, 0, r0, c1, c0, 1 @ set ACTLR \n\t" \ diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 8db307d0954b..2fdf8679b46e 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -208,26 +208,21 @@ #endif .endif msr spsr_cxsf, \rpsr -#if defined(CONFIG_CPU_V6) - ldr r0, [sp] - strex r1, r2, [sp] @ clear the exclusive monitor - ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr -#elif defined(CONFIG_CPU_32v6K) - clrex @ clear the exclusive monitor - ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr -#else - ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr +#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K) + @ We must avoid clrex due to Cortex-A15 erratum #830321 + sub r0, sp, #4 @ uninhabited address + strex r1, r2, [r0] @ clear the exclusive monitor #endif + ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr .endm .macro restore_user_regs, fast = 0, offset = 0 ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr ldr lr, [sp, #\offset + S_PC]! @ get pc msr spsr_cxsf, r1 @ save in spsr_svc -#if defined(CONFIG_CPU_V6) +#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K) + @ We must avoid clrex due to Cortex-A15 erratum #830321 strex r1, r2, [sp] @ clear the exclusive monitor -#elif defined(CONFIG_CPU_32v6K) - clrex @ clear the exclusive monitor #endif .if \fast ldmdb sp, {r1 - lr}^ @ get calling r1 - lr @@ -261,7 +256,10 @@ .endif ldr lr, [sp, #S_SP] @ top of the stack ldrd r0, r1, [sp, #S_LR] @ calling lr and pc - clrex @ clear the exclusive monitor + + @ We must avoid clrex due to Cortex-A15 erratum #830321 + strex r2, r1, [sp, #S_LR] @ clear the exclusive monitor + stmdb lr!, {r0, r1, \rpsr} @ calling lr and rfe context ldmia sp, {r0 - r12} mov sp, lr @@ -282,13 +280,16 @@ .endm #else /* ifdef CONFIG_CPU_V7M */ .macro restore_user_regs, fast = 0, offset = 0 - clrex @ clear the exclusive monitor mov r2, sp load_user_sp_lr r2, r3, \offset + S_SP @ calling sp, lr ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr ldr lr, [sp, #\offset + S_PC] @ get pc add sp, sp, #\offset + S_SP msr spsr_cxsf, r1 @ save in spsr_svc + + @ We must avoid clrex due to Cortex-A15 erratum #830321 + strex r1, r2, [sp] @ clear the exclusive monitor + .if \fast ldmdb sp, {r1 - r12} @ get calling r1 - r12 .else diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c index b2f8b60cf0e9..dc9a764a7c37 100644 --- a/arch/arm/mach-exynos/mcpm-exynos.c +++ b/arch/arm/mach-exynos/mcpm-exynos.c @@ -43,7 +43,6 @@ "mcr p15, 0, r0, c1, c0, 0 @ set SCTLR\n\t" \ "isb\n\t"\ "bl v7_flush_dcache_"__stringify(level)"\n\t" \ - "clrex\n\t"\ "mrc p15, 0, r0, c1, c0, 1 @ get ACTLR\n\t" \ "bic r0, r0, #(1 << 6) @ disable local coherency\n\t" \ /* Dummy Load of a device register to avoid Erratum 799270 */ \ From eba1c71819d210f5e0d522571f9b8abce94fe9c5 Mon Sep 17 00:00:00 2001 From: Juri Lelli Date: Fri, 15 Aug 2014 15:53:14 +0100 Subject: [PATCH 206/272] ARM: 8130/1: cpuidle/cpuidle-big_little: fix reading cpu id part number Commit af040ffc9ba1 ("ARM: make it easier to check the CPU part number correctly") changed ARM_CPU_PART_X masks, and the way they are returned and checked against. Usage of read_cpuid_part_number() is now deprecated, and calling places updated accordingly. This actually broke cpuidle-big_little initialization, as bl_idle_driver_init() performs a check using an hardcoded mask on cpu_id. Create an interface to perform the check (that is now even easier to read). Define also a proper mask (ARM_CPU_PART_MASK) that makes this kind of checks cleaner and helps preventing bugs in the future. Update usage accordingly. Signed-off-by: Juri Lelli Signed-off-by: Lorenzo Pieralisi Signed-off-by: Russell King --- arch/arm/include/asm/cputype.h | 3 ++- arch/arm/include/asm/smp_plat.h | 15 +++++++++++++++ drivers/cpuidle/cpuidle-big_little.c | 13 +++---------- 3 files changed, 20 insertions(+), 11 deletions(-) diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index 963a2515906d..819777d0e91f 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -74,6 +74,7 @@ #define ARM_CPU_PART_CORTEX_A12 0x4100c0d0 #define ARM_CPU_PART_CORTEX_A17 0x4100c0e0 #define ARM_CPU_PART_CORTEX_A15 0x4100c0f0 +#define ARM_CPU_PART_MASK 0xff00fff0 #define ARM_CPU_XSCALE_ARCH_MASK 0xe000 #define ARM_CPU_XSCALE_ARCH_V1 0x2000 @@ -179,7 +180,7 @@ static inline unsigned int __attribute_const__ read_cpuid_implementor(void) */ static inline unsigned int __attribute_const__ read_cpuid_part(void) { - return read_cpuid_id() & 0xff00fff0; + return read_cpuid_id() & ARM_CPU_PART_MASK; } static inline unsigned int __attribute_const__ __deprecated read_cpuid_part_number(void) diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h index a252c0bfacf5..0ad7d490ee6f 100644 --- a/arch/arm/include/asm/smp_plat.h +++ b/arch/arm/include/asm/smp_plat.h @@ -8,6 +8,7 @@ #include #include +#include #include /* @@ -25,6 +26,20 @@ static inline bool is_smp(void) #endif } +/** + * smp_cpuid_part() - return part id for a given cpu + * @cpu: logical cpu id. + * + * Return: part id of logical cpu passed as argument. + */ +static inline unsigned int smp_cpuid_part(int cpu) +{ + struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpu); + + return is_smp() ? cpu_info->cpuid & ARM_CPU_PART_MASK : + read_cpuid_part(); +} + /* all SMP configurations have the extended CPUID registers */ #ifndef CONFIG_MMU #define tlb_ops_need_broadcast() 0 diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c index 344d79fa3407..ef94c3b81f18 100644 --- a/drivers/cpuidle/cpuidle-big_little.c +++ b/drivers/cpuidle/cpuidle-big_little.c @@ -138,25 +138,18 @@ static int bl_enter_powerdown(struct cpuidle_device *dev, return idx; } -static int __init bl_idle_driver_init(struct cpuidle_driver *drv, int cpu_id) +static int __init bl_idle_driver_init(struct cpuidle_driver *drv, int part_id) { - struct cpuinfo_arm *cpu_info; struct cpumask *cpumask; - unsigned long cpuid; int cpu; cpumask = kzalloc(cpumask_size(), GFP_KERNEL); if (!cpumask) return -ENOMEM; - for_each_possible_cpu(cpu) { - cpu_info = &per_cpu(cpu_data, cpu); - cpuid = is_smp() ? cpu_info->cpuid : read_cpuid_id(); - - /* read cpu id part number */ - if ((cpuid & 0xFFF0) == cpu_id) + for_each_possible_cpu(cpu) + if (smp_cpuid_part(cpu) == part_id) cpumask_set_cpu(cpu, cpumask); - } drv->cpumask = cpumask; From c9d5d6fe168fd45a4dfdd0116affe708789b4702 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 27 Aug 2014 16:21:12 +0300 Subject: [PATCH 207/272] spi: dw-pci: fix bug when regs left uninitialized The commit 04f421e7 "spi: dw: use managed resources" changes drivers to use managed functions, but seems wasn't properly tested in PCI case. The regs field of struct dw_spi left uninitialized. Thus, kernel crashes when tries to access to the SPI controller registers. This patch fixes the issue. Fixes: 04f421e7 (spi: dw: use managed resources) Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-dw-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c index 3f3dc1226edf..e14960470d8d 100644 --- a/drivers/spi/spi-dw-pci.c +++ b/drivers/spi/spi-dw-pci.c @@ -62,6 +62,8 @@ static int spi_pci_probe(struct pci_dev *pdev, if (ret) return ret; + dws->regs = pcim_iomap_table(pdev)[pci_bar]; + dws->bus_num = 0; dws->num_cs = 4; dws->irq = pdev->irq; From 08a707b87874eaaa0f336ab604ecd6e5e9f286dd Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 27 Aug 2014 19:26:08 +0300 Subject: [PATCH 208/272] spi: dw: fix kernel crash due to NULL pointer dereference The obvious fix after the commit d9c73bb8a3a5 "spi: dw: add support for gpio controlled chip select". This patch fixes the issue by using locally defined temporary variable. Fixes: d9c73bb8a3a5 (spi: dw: add support for gpio controlled chip select) Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown Cc: --- drivers/spi/spi-dw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 29f33143b795..670f0627f3bf 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -271,7 +271,7 @@ static void giveback(struct dw_spi *dws) transfer_list); if (!last_transfer->cs_change) - spi_chip_sel(dws, dws->cur_msg->spi, 0); + spi_chip_sel(dws, msg->spi, 0); spi_finalize_current_message(dws->master); } From d979e9f9ecab04c1ecca741370e30a8a498893f5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 27 Aug 2014 11:55:18 +0200 Subject: [PATCH 209/272] USB: serial: fix potential stack buffer overflow Make sure to verify the maximum number of endpoints per type to avoid writing beyond the end of a stack-allocated array. The current usb-serial implementation is limited to eight ports per interface but failed to verify that the number of endpoints of a certain type reported by a device did not exceed this limit. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 02de3110fe94..eb0e8c6a8682 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -764,29 +764,39 @@ static int usb_serial_probe(struct usb_interface *interface, if (usb_endpoint_is_bulk_in(endpoint)) { /* we found a bulk in endpoint */ dev_dbg(ddev, "found bulk in on endpoint %d\n", i); - bulk_in_endpoint[num_bulk_in] = endpoint; - ++num_bulk_in; + if (num_bulk_in < MAX_NUM_PORTS) { + bulk_in_endpoint[num_bulk_in] = endpoint; + ++num_bulk_in; + } } if (usb_endpoint_is_bulk_out(endpoint)) { /* we found a bulk out endpoint */ dev_dbg(ddev, "found bulk out on endpoint %d\n", i); - bulk_out_endpoint[num_bulk_out] = endpoint; - ++num_bulk_out; + if (num_bulk_out < MAX_NUM_PORTS) { + bulk_out_endpoint[num_bulk_out] = endpoint; + ++num_bulk_out; + } } if (usb_endpoint_is_int_in(endpoint)) { /* we found a interrupt in endpoint */ dev_dbg(ddev, "found interrupt in on endpoint %d\n", i); - interrupt_in_endpoint[num_interrupt_in] = endpoint; - ++num_interrupt_in; + if (num_interrupt_in < MAX_NUM_PORTS) { + interrupt_in_endpoint[num_interrupt_in] = + endpoint; + ++num_interrupt_in; + } } if (usb_endpoint_is_int_out(endpoint)) { /* we found an interrupt out endpoint */ dev_dbg(ddev, "found interrupt out on endpoint %d\n", i); - interrupt_out_endpoint[num_interrupt_out] = endpoint; - ++num_interrupt_out; + if (num_interrupt_out < MAX_NUM_PORTS) { + interrupt_out_endpoint[num_interrupt_out] = + endpoint; + ++num_interrupt_out; + } } } @@ -809,8 +819,10 @@ static int usb_serial_probe(struct usb_interface *interface, if (usb_endpoint_is_int_in(endpoint)) { /* we found a interrupt in endpoint */ dev_dbg(ddev, "found interrupt in for Prolific device on separate interface\n"); - interrupt_in_endpoint[num_interrupt_in] = endpoint; - ++num_interrupt_in; + if (num_interrupt_in < MAX_NUM_PORTS) { + interrupt_in_endpoint[num_interrupt_in] = endpoint; + ++num_interrupt_in; + } } } } From 5654699fb38512bdbfc0f892ce54fce75bdc2bab Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 27 Aug 2014 11:55:19 +0200 Subject: [PATCH 210/272] USB: serial: fix potential heap buffer overflow Make sure to verify the number of ports requested by subdriver to avoid writing beyond the end of fixed-size array in interface data. The current usb-serial implementation is limited to eight ports per interface but failed to verify that the number of ports requested by a subdriver (which could have been determined from device descriptors) did not exceed this limit. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index eb0e8c6a8682..475723c006f9 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -862,6 +862,11 @@ static int usb_serial_probe(struct usb_interface *interface, num_ports = type->num_ports; } + if (num_ports > MAX_NUM_PORTS) { + dev_warn(ddev, "too many ports requested: %d\n", num_ports); + num_ports = MAX_NUM_PORTS; + } + serial->num_ports = num_ports; serial->num_bulk_in = num_bulk_in; serial->num_bulk_out = num_bulk_out; From e21eba05afd288a227320f797864ddd859397eed Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 25 Aug 2014 12:21:56 +0200 Subject: [PATCH 211/272] xhci: Disable streams on Via XHCI with device-id 0x3432 This is a bit bigger hammer then I would like to use for this, but for now it will have to make do. I'm working on getting my hands on one of these so that I can try to get streams to work (with a quirk flag if necessary) and then we can re-enable them. For now this at least makes uas capable disk enclosures work again by forcing fallback to the usb-storage driver. https://bugzilla.kernel.org/show_bug.cgi?id=79511 Cc: stable@vger.kernel.org # 3.15 Signed-off-by: Hans de Goede Acked-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 95d0a6d984f1..c22a3e15a16e 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -155,6 +155,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_VIA) xhci->quirks |= XHCI_RESET_ON_RESUME; + /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */ + if (pdev->vendor == PCI_VENDOR_ID_VIA && + pdev->device == 0x3432) + xhci->quirks |= XHCI_BROKEN_STREAMS; + if (xhci->quirks & XHCI_RESET_ON_RESUME) xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, "QUIRK: Resetting on resume"); From 0bd252de78d406485c896508c13a8f7a78ee8353 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Wed, 27 Aug 2014 13:01:35 -0600 Subject: [PATCH 212/272] radeon: Test for PCI root bus before assuming bus->self If we assign a Radeon device to a virtual machine, we can no longer assume a fixed hardware topology, like the GPU having a parent device. This patch simply adds a few pci_is_root_bus() tests to avoid passing a NULL pointer to PCI access functions, allowing the radeon driver to work in a QEMU 440FX machine with an assigned HD8570 on the emulated PCI root bus. Signed-off-by: Alex Williamson Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/cik.c | 6 +++++- drivers/gpu/drm/radeon/si.c | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index e57698847be5..fa9565957f9d 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -9563,6 +9563,9 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev) int ret, i; u16 tmp16; + if (pci_is_root_bus(rdev->pdev->bus)) + return; + if (radeon_pcie_gen2 == 0) return; @@ -9789,7 +9792,8 @@ static void cik_program_aspm(struct radeon_device *rdev) if (orig != data) WREG32_PCIE_PORT(PCIE_LC_LINK_WIDTH_CNTL, data); - if (!disable_clkreq) { + if (!disable_clkreq && + !pci_is_root_bus(rdev->pdev->bus)) { struct pci_dev *root = rdev->pdev->bus->self; u32 lnkcap; diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 739e0a5349f8..6bce40847753 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -7188,6 +7188,9 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev) int ret, i; u16 tmp16; + if (pci_is_root_bus(rdev->pdev->bus)) + return; + if (radeon_pcie_gen2 == 0) return; @@ -7465,7 +7468,8 @@ static void si_program_aspm(struct radeon_device *rdev) if (orig != data) WREG32_PIF_PHY1(PB1_PIF_CNTL, data); - if (!disable_clkreq) { + if (!disable_clkreq && + !pci_is_root_bus(rdev->pdev->bus)) { struct pci_dev *root = rdev->pdev->bus->self; u32 lnkcap; From 541555e95cc9ca321606b72dc0c670a764713669 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Wed, 27 Aug 2014 00:05:50 +0200 Subject: [PATCH 213/272] MAINTAINERS: catch special Rockchip code locations Add some more locations that aren't catched by the general wildcard. This includes the devicetree files, clock directory, rk3x i2c driver, everything in a third layer under drivers like iio/adc/rockchip_saradc.c and the i2s driver. Signed-off-by: Heiko Stuebner Signed-off-by: Olof Johansson --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 1ff06dee651d..93e9f730f406 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1279,8 +1279,13 @@ M: Heiko Stuebner L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: linux-rockchip@lists.infradead.org S: Maintained +F: arch/arm/boot/dts/rk3* F: arch/arm/mach-rockchip/ +F: drivers/clk/rockchip/ +F: drivers/i2c/busses/i2c-rk3x.c F: drivers/*/*rockchip* +F: drivers/*/*/*rockchip* +F: sound/soc/rockchip/ ARM/SAMSUNG ARM ARCHITECTURES M: Ben Dooks From 7c38405ca7bde60e6d3cffb87a086fc7a805a85c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 27 Aug 2014 15:23:53 -0700 Subject: [PATCH 214/272] Revert "usb: ehci/ohci-exynos: Fix PHY getting sequence" This reverts commit 039368901ad0a6476c7ecf0cfe4f84d735e30135. Vivek writes: We not longer need this patch, since we have planned to remove the usb-phy drivers for samsung [1], we have completely deleted the support for the the same from ohci-exynos and ehci-exynos drivers too [2]. Sorry for the confusion, but this patch can be dropped and instead we can pick the patches in [2]. [1] http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35774.html [2] https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35695.html https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35696.html Cc: Sachin Kamat Cc: Vivek Gautam Cc: Alan Stern Cc: Jingoo Han Cc: Sachin Kamat Cc: Jingoo Han Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-exynos.c | 40 ++++++++++++++--------------- drivers/usb/host/ohci-exynos.c | 47 ++++++++++++++++++---------------- 2 files changed, 45 insertions(+), 42 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 2eed9a4f89a9..cda0a2f5c467 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -62,6 +62,18 @@ static int exynos_ehci_get_phy(struct device *dev, int phy_number; int ret = 0; + exynos_ehci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR(exynos_ehci->phy)) { + ret = PTR_ERR(exynos_ehci->phy); + if (ret != -ENXIO && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); + } else { + exynos_ehci->otg = exynos_ehci->phy->otg; + } + for_each_available_child_of_node(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); if (ret) { @@ -78,27 +90,15 @@ static int exynos_ehci_get_phy(struct device *dev, phy = devm_of_phy_get(dev, child, NULL); of_node_put(child); - if (IS_ERR(phy)) - /* Lets fallback to older USB-PHYs */ - goto usb_phy_old; - exynos_ehci->phy_g[phy_number] = phy; - /* Make the older PHYs unavailable */ - exynos_ehci->phy = ERR_PTR(-ENXIO); - } - - return 0; - -usb_phy_old: - exynos_ehci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ehci->phy)) { - ret = PTR_ERR(exynos_ehci->phy); - if (ret != -ENXIO && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -ENOSYS && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } else { - exynos_ehci->otg = exynos_ehci->phy->otg; + exynos_ehci->phy_g[phy_number] = phy; } return ret; diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 7c48e3f3146b..a72ab8fe8cd3 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -51,12 +51,27 @@ static int exynos_ohci_get_phy(struct device *dev, int phy_number; int ret = 0; + exynos_ohci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR(exynos_ohci->phy)) { + ret = PTR_ERR(exynos_ohci->phy); + if (ret != -ENXIO && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); + } else { + exynos_ohci->otg = exynos_ohci->phy->otg; + } + /* * Getting generic phy: * We are keeping both types of phys as a part of transiting OHCI * to generic phy framework, so as to maintain backward compatibilty - * with old DTB too. - * We fallback to older USB-PHYs when we fail to get generic PHYs. + * with old DTB. + * If there are existing devices using DTB files built from them, + * to remove the support for old bindings in this driver, + * we need to make sure that such devices have their DTBs + * updated to ones built from new DTS. */ for_each_available_child_of_node(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); @@ -74,27 +89,15 @@ static int exynos_ohci_get_phy(struct device *dev, phy = devm_of_phy_get(dev, child, NULL); of_node_put(child); - if (IS_ERR(phy)) - /* Lets fallback to older USB-PHYs */ - goto usb_phy_old; - exynos_ohci->phy_g[phy_number] = phy; - /* Make the older PHYs unavailable */ - exynos_ohci->phy = ERR_PTR(-ENXIO); - } - - return 0; - -usb_phy_old: - exynos_ohci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ohci->phy)) { - ret = PTR_ERR(exynos_ohci->phy); - if (ret != -ENXIO && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -ENOSYS && ret != -ENODEV) { + dev_err(dev, "no usb2 phy configured\n"); + return ret; + } + dev_dbg(dev, "Failed to get usb2 phy\n"); } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } else { - exynos_ohci->otg = exynos_ohci->phy->otg; + exynos_ohci->phy_g[phy_number] = phy; } return ret; From 69dc9536405213c1d545fcace1fc15c481d00aae Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Wed, 27 Aug 2014 18:33:49 -0400 Subject: [PATCH 215/272] ext4: fix incorect journal credits reservation in ext4_zero_range Currently we reserve only 4 blocks but in worst case scenario ext4_zero_partial_blocks() may want to zeroout and convert two non adjacent blocks. Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/extents.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index f0e6934291dd..0e9de2328bd2 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4731,6 +4731,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, loff_t new_size = 0; int ret = 0; int flags; + int credits; int partial; loff_t start, end; ext4_lblk_t lblk; @@ -4830,8 +4831,14 @@ static long ext4_zero_range(struct file *file, loff_t offset, if (ret) goto out_dio; } - - handle = ext4_journal_start(inode, EXT4_HT_MISC, 4); + /* + * In worst case we have to writeout two nonadjacent unwritten + * blocks and update the inode + */ + credits = (2 * ext4_ext_index_trans_blocks(inode, 2)) + 1; + if (ext4_should_journal_data(inode)) + credits += 2; + handle = ext4_journal_start(inode, EXT4_HT_MISC, credits); if (IS_ERR(handle)) { ret = PTR_ERR(handle); ext4_std_error(inode->i_sb, ret); From c174e6d6979a04b7b77b93f244396be4b81f8bfb Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Wed, 27 Aug 2014 18:40:00 -0400 Subject: [PATCH 216/272] ext4: fix transaction issues for ext4_fallocate and ext_zero_range After commit f282ac19d86f we use different transactions for preallocation and i_disksize update which result in complain from fsck after power-failure. spotted by generic/019. IMHO this is regression because fs becomes inconsistent, even more 'e2fsck -p' will no longer works (which drives admins go crazy) Same transaction requirement applies ctime,mtime updates testcase: xfstest generic/019 Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/extents.c | 68 ++++++++++++++++++++++++----------------------- 1 file changed, 35 insertions(+), 33 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 0e9de2328bd2..74292a71b384 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4665,7 +4665,8 @@ retry: } static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, - ext4_lblk_t len, int flags, int mode) + ext4_lblk_t len, loff_t new_size, + int flags, int mode) { struct inode *inode = file_inode(file); handle_t *handle; @@ -4674,8 +4675,10 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, int retries = 0; struct ext4_map_blocks map; unsigned int credits; + loff_t epos; map.m_lblk = offset; + map.m_len = len; /* * Don't normalize the request if it can fit in one extent so * that it doesn't get unnecessarily split into multiple @@ -4690,9 +4693,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, credits = ext4_chunk_trans_blocks(inode, len); retry: - while (ret >= 0 && ret < len) { - map.m_lblk = map.m_lblk + ret; - map.m_len = len = len - ret; + while (ret >= 0 && len) { handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, credits); if (IS_ERR(handle)) { @@ -4709,6 +4710,21 @@ retry: ret2 = ext4_journal_stop(handle); break; } + map.m_lblk += ret; + map.m_len = len = len - ret; + epos = (loff_t)map.m_lblk << inode->i_blkbits; + inode->i_ctime = ext4_current_time(inode); + if (new_size) { + if (epos > new_size) + epos = new_size; + if (ext4_update_inode_size(inode, epos) & 0x1) + inode->i_mtime = inode->i_ctime; + } else { + if (epos > inode->i_size) + ext4_set_inode_flag(inode, + EXT4_INODE_EOFBLOCKS); + } + ext4_mark_inode_dirty(handle, inode); ret2 = ext4_journal_stop(handle); if (ret2) break; @@ -4732,7 +4748,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, int ret = 0; int flags; int credits; - int partial; + int partial_begin, partial_end; loff_t start, end; ext4_lblk_t lblk; struct address_space *mapping = inode->i_mapping; @@ -4772,7 +4788,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, if (start < offset || end > offset + len) return -EINVAL; - partial = (offset + len) & ((1 << blkbits) - 1); + partial_begin = offset & ((1 << blkbits) - 1); + partial_end = (offset + len) & ((1 << blkbits) - 1); lblk = start >> blkbits; max_blocks = (end >> blkbits); @@ -4806,7 +4823,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, * If we have a partial block after EOF we have to allocate * the entire block. */ - if (partial) + if (partial_end) max_blocks += 1; } @@ -4814,6 +4831,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, /* Now release the pages and zero block aligned part of pages*/ truncate_pagecache_range(inode, start, end - 1); + inode->i_mtime = inode->i_ctime = ext4_current_time(inode); /* Wait all existing dio workers, newcomers will block on i_mutex */ ext4_inode_block_unlocked_dio(inode); @@ -4826,11 +4844,14 @@ static long ext4_zero_range(struct file *file, loff_t offset, if (ret) goto out_dio; - ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, - mode); + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, + flags, mode); if (ret) goto out_dio; } + if (!partial_begin && !partial_end) + goto out_dio; + /* * In worst case we have to writeout two nonadjacent unwritten * blocks and update the inode @@ -4856,7 +4877,6 @@ static long ext4_zero_range(struct file *file, loff_t offset, if ((offset + len) > i_size_read(inode)) ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); } - ext4_mark_inode_dirty(handle, inode); /* Zero out partial block at the edges of the range */ @@ -4883,7 +4903,6 @@ out_mutex: long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { struct inode *inode = file_inode(file); - handle_t *handle; loff_t new_size = 0; unsigned int max_blocks; int ret = 0; @@ -4939,32 +4958,15 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) goto out; } - ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, mode); + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, + flags, mode); if (ret) goto out; - handle = ext4_journal_start(inode, EXT4_HT_INODE, 2); - if (IS_ERR(handle)) - goto out; - - inode->i_ctime = ext4_current_time(inode); - - if (new_size) { - if (ext4_update_inode_size(inode, new_size) & 0x1) - inode->i_mtime = inode->i_ctime; - } else { - /* - * Mark that we allocate beyond EOF so the subsequent truncate - * can proceed even if the new size is the same as i_size. - */ - if ((offset + len) > i_size_read(inode)) - ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); + if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { + ret = jbd2_complete_transaction(EXT4_SB(inode->i_sb)->s_journal, + EXT4_I(inode)->i_sync_tid); } - ext4_mark_inode_dirty(handle, inode); - if (file->f_flags & O_SYNC) - ext4_handle_sync(handle); - - ext4_journal_stop(handle); out: mutex_unlock(&inode->i_mutex); trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); From ce717613f3fb531dea3e11c8c24d80585331f137 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 27 Aug 2014 10:17:08 -0700 Subject: [PATCH 217/272] intel_pstate: Turn per cpu printk into pr_debug On larger systems intel_pstate currently spams the boot up log with its "Intel pstate controlling ..." message for each CPU. It's the only subsystem that prints a message for each CPU. Turn the message into a pr_debug. Signed-off-by: Andi Kleen Acked-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index c5eac949760d..17be734dc303 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -688,7 +688,7 @@ static int intel_pstate_init_cpu(unsigned int cpunum) add_timer_on(&cpu->timer, cpunum); - pr_info("Intel pstate controlling: cpu %d\n", cpunum); + pr_debug("Intel pstate controlling: cpu %d\n", cpunum); return 0; } From 16405f98bca8eb39a23b3ce03e241ca19e7af370 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Fri, 22 Aug 2014 13:05:44 +0300 Subject: [PATCH 218/272] cpufreq: intel_pstate: Add CPU ID for Braswell processor This is pretty much the same as Intel Baytrail, only the CPU ID is different. Add the new ID to the supported CPU list. Signed-off-by: Mika Westerberg Acked-by: Viresh Kumar Acked-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 17be734dc303..e396ad3f8f3f 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -660,6 +660,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(0x3f, core_params), ICPU(0x45, core_params), ICPU(0x46, core_params), + ICPU(0x4c, byt_params), ICPU(0x4f, core_params), ICPU(0x56, core_params), {} From dc2687423964ec65f2953f3f08b5f97d02058acd Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 27 Aug 2014 12:00:27 +0100 Subject: [PATCH 219/272] cpufreq: s5pv210: Remove spurious __init annotation Since this is a platform driver and can be probed at any time we can't annotate funtions in the probe path as __init, the code can't safely be discarded at the end of kernel init. Signed-off-by: Mark Brown Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/s5pv210-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c index 9a68225a757e..3f9791f07b8e 100644 --- a/drivers/cpufreq/s5pv210-cpufreq.c +++ b/drivers/cpufreq/s5pv210-cpufreq.c @@ -501,7 +501,7 @@ static int check_mem_type(void __iomem *dmc_reg) return val >> 8; } -static int __init s5pv210_cpu_init(struct cpufreq_policy *policy) +static int s5pv210_cpu_init(struct cpufreq_policy *policy) { unsigned long mem_type; int ret; From a9ef803d740bfadf5e505fbc57efa57692e27025 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 27 Aug 2014 16:55:29 -0700 Subject: [PATCH 220/272] USB: fix build error with CONFIG_PM_RUNTIME disabled commit bdd405d2a528 ("usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1") causes a build error if CONFIG_PM_RUNTIME is disabled. Fix that by doing a simple #ifdef guard around it. Reported-by: Stephen Rothwell Reported-by: kbuild test robot Cc: Roger Quadros Cc: Michael Welling Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 003cb6b1a6bf..46f5161c7891 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1732,8 +1732,10 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) * - If user has indicated to prevent autosuspend by passing * usbcore.autosuspend = -1 then keep autosuspend disabled. */ +#ifdef CONFIG_PM_RUNTIME if (hdev->dev.power.autosuspend_delay >= 0) pm_runtime_set_autosuspend_delay(&hdev->dev, 0); +#endif /* * Hubs have proper suspend/resume support, except for root hubs From 4d6923733f158e7f8f0695b43c30c22a59ec0a34 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Wed, 27 Aug 2014 11:19:26 -0400 Subject: [PATCH 221/272] ww-mutex: clarify help text for DEBUG_WW_MUTEX_SLOWPATH We really don't want distro's enabling this in their kernels. Try and make that more clear. Signed-off-by: Rob Clark Acked-by: Maarten Lankhorst Signed-off-by: Dave Airlie --- lib/Kconfig.debug | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 07c28323f88f..1b233fc67466 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -892,6 +892,10 @@ config DEBUG_WW_MUTEX_SLOWPATH the full mutex checks enabled with (CONFIG_PROVE_LOCKING) this will test all possible w/w mutex interface abuse with the exception of simply not acquiring all the required locks. + Note that this feature can introduce significant overhead, so + it really should not be enabled in a production or distro kernel, + even a debug kernel. If you are a driver writer, enable it. If + you are a distro, do not. config DEBUG_LOCK_ALLOC bool "Lock debugging: detect incorrect freeing of live locks" From 00e7208997d7a42b6f7b22f582523755f43a2f9b Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Sun, 24 Aug 2014 19:23:26 +0200 Subject: [PATCH 222/272] drm: fix division-by-zero on dumb_create() Kinda unexpected, but DIV_ROUND_UP() can overflow if passed an argument bigger than UINT_MAX - DIVISOR. Fix this by testing for "!cpp" before using it in the following division. Note that DIV_ROUND_UP() is defined as: #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) ..this will obviously overflow if (n + d - 1) is bigger than UINT_MAX. Reported-by: Tommi Rantala Signed-off-by: David Herrmann Reviewed-by: Rob Clark Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_crtc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index fa2be249999c..90e773019eac 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -4696,8 +4696,9 @@ int drm_mode_create_dumb_ioctl(struct drm_device *dev, return -EINVAL; /* overflow checks for 32bit size calculations */ + /* NOTE: DIV_ROUND_UP() can overflow */ cpp = DIV_ROUND_UP(args->bpp, 8); - if (cpp > 0xffffffffU / args->width) + if (!cpp || cpp > 0xffffffffU / args->width) return -EINVAL; stride = cpp * args->width; if (args->height > 0xffffffffU / stride) From af438fec6cb99fc2e2faf8b16b865af26ce722e6 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Wed, 27 Aug 2014 19:38:22 -0600 Subject: [PATCH 223/272] ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants Use the corresponding compatibles to identify the devices. Signed-off-by: Rajendra Nayak Signed-off-by: Lokesh Vutla Acked-by: Nishanth Menon Tested-by: Nishanth Menon Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/soc.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h index 01ca8086fb6c..4376f59626d1 100644 --- a/arch/arm/mach-omap2/soc.h +++ b/arch/arm/mach-omap2/soc.h @@ -245,6 +245,8 @@ IS_AM_SUBCLASS(437x, 0x437) #define soc_is_omap54xx() 0 #define soc_is_omap543x() 0 #define soc_is_dra7xx() 0 +#define soc_is_dra74x() 0 +#define soc_is_dra72x() 0 #if defined(MULTI_OMAP2) # if defined(CONFIG_ARCH_OMAP2) @@ -393,7 +395,11 @@ IS_OMAP_TYPE(3430, 0x3430) #if defined(CONFIG_SOC_DRA7XX) #undef soc_is_dra7xx +#undef soc_is_dra74x +#undef soc_is_dra72x #define soc_is_dra7xx() (of_machine_is_compatible("ti,dra7")) +#define soc_is_dra74x() (of_machine_is_compatible("ti,dra74")) +#define soc_is_dra72x() (of_machine_is_compatible("ti,dra72")) #endif /* Various silicon revisions for omap2 */ From f7f7a29bf0cf25af23f37e5b5bf1368b85705286 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Wed, 27 Aug 2014 19:38:23 -0600 Subject: [PATCH 224/272] ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists To deal with IPs which are specific to dra74x and dra72x, maintain seperate ocp interface lists, while keeping the common list for all common IPs. Move USB OTG SS4 to dra74x only list since its unavailable in dra72x and is giving an abort during boot. The dra72x only list is empty for now and a placeholder for future hwmod additions which are specific to dra72x. Fixes: d904b38df0db13 ("ARM: DRA7: hwmod: Add SYSCONFIG for usb_otg_ss") Reported-by: Keerthy Signed-off-by: Rajendra Nayak Signed-off-by: Lokesh Vutla Tested-by: Nishanth Menon [paul@pwsan.com: fixed comment style to conform with CodingStyle] Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod.c | 3 +++ arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 22 ++++++++++++++++++++-- 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 6c074f37cdd2..bc2466cc33b9 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -3345,6 +3345,9 @@ int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois) if (!ois) return 0; + if (ois[0] == NULL) /* Empty list */ + return 0; + if (!linkspace) { if (_alloc_linkspace(ois)) { pr_err("omap_hwmod: could not allocate link space\n"); diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c index 2757abf87fbc..5684f112654b 100644 --- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c @@ -35,6 +35,7 @@ #include "i2c.h" #include "mmc.h" #include "wd_timer.h" +#include "soc.h" /* Base offset for all DRA7XX interrupts external to MPUSS */ #define DRA7XX_IRQ_GIC_START 32 @@ -3261,7 +3262,6 @@ static struct omap_hwmod_ocp_if *dra7xx_hwmod_ocp_ifs[] __initdata = { &dra7xx_l4_per3__usb_otg_ss1, &dra7xx_l4_per3__usb_otg_ss2, &dra7xx_l4_per3__usb_otg_ss3, - &dra7xx_l4_per3__usb_otg_ss4, &dra7xx_l3_main_1__vcp1, &dra7xx_l4_per2__vcp1, &dra7xx_l3_main_1__vcp2, @@ -3270,8 +3270,26 @@ static struct omap_hwmod_ocp_if *dra7xx_hwmod_ocp_ifs[] __initdata = { NULL, }; +static struct omap_hwmod_ocp_if *dra74x_hwmod_ocp_ifs[] __initdata = { + &dra7xx_l4_per3__usb_otg_ss4, + NULL, +}; + +static struct omap_hwmod_ocp_if *dra72x_hwmod_ocp_ifs[] __initdata = { + NULL, +}; + int __init dra7xx_hwmod_init(void) { + int ret; + omap_hwmod_init(); - return omap_hwmod_register_links(dra7xx_hwmod_ocp_ifs); + ret = omap_hwmod_register_links(dra7xx_hwmod_ocp_ifs); + + if (!ret && soc_is_dra74x()) + return omap_hwmod_register_links(dra74x_hwmod_ocp_ifs); + else if (!ret && soc_is_dra72x()) + return omap_hwmod_register_links(dra72x_hwmod_ocp_ifs); + + return ret; } From b8d758d29fda0ece817237718909ed2622f024f1 Mon Sep 17 00:00:00 2001 From: "Y.C. Chen" Date: Fri, 22 Aug 2014 11:00:17 +0800 Subject: [PATCH 225/272] drm/ast: Add missing entry to dclk_table[] This avoid reading past the end of the list for certain modes Signed-off-by: Y.C. Chen Reviewed-by: Egbert Eich Signed-off-by: Dave Airlie --- drivers/gpu/drm/ast/ast_tables.h | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/ast/ast_tables.h b/drivers/gpu/drm/ast/ast_tables.h index 4c761dcea972..05c01ea85294 100644 --- a/drivers/gpu/drm/ast/ast_tables.h +++ b/drivers/gpu/drm/ast/ast_tables.h @@ -99,6 +99,7 @@ static struct ast_vbios_dclk_info dclk_table[] = { {0x25, 0x65, 0x80}, /* 16: VCLK88.75 */ {0x77, 0x58, 0x80}, /* 17: VCLK119 */ {0x32, 0x67, 0x80}, /* 18: VCLK85_5 */ + {0x6a, 0x6d, 0x80}, /* 19: VCLK97_75 */ }; static struct ast_vbios_stdtable vbios_stdtable[] = { From a07b3b4508447682574cf18fdad23ed709365dd1 Mon Sep 17 00:00:00 2001 From: Gioh Kim Date: Wed, 14 May 2014 08:49:43 +0900 Subject: [PATCH 226/272] Documentation/dma-buf-sharing.txt: update API descriptions Update some descriptions for API arguments and descriptions. Signed-off-by: Gioh Kim Signed-off-by: Sumit Semwal --- Documentation/dma-buf-sharing.txt | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/Documentation/dma-buf-sharing.txt b/Documentation/dma-buf-sharing.txt index 67a4087d53f9..bb9753b635a3 100644 --- a/Documentation/dma-buf-sharing.txt +++ b/Documentation/dma-buf-sharing.txt @@ -56,10 +56,10 @@ The dma_buf buffer sharing API usage contains the following steps: size_t size, int flags, const char *exp_name) - If this succeeds, dma_buf_export allocates a dma_buf structure, and returns a - pointer to the same. It also associates an anonymous file with this buffer, - so it can be exported. On failure to allocate the dma_buf object, it returns - NULL. + If this succeeds, dma_buf_export_named allocates a dma_buf structure, and + returns a pointer to the same. It also associates an anonymous file with this + buffer, so it can be exported. On failure to allocate the dma_buf object, + it returns NULL. 'exp_name' is the name of exporter - to facilitate information while debugging. @@ -76,7 +76,7 @@ The dma_buf buffer sharing API usage contains the following steps: drivers and/or processes. Interface: - int dma_buf_fd(struct dma_buf *dmabuf) + int dma_buf_fd(struct dma_buf *dmabuf, int flags) This API installs an fd for the anonymous file associated with this buffer; returns either 'fd', or error. @@ -157,7 +157,9 @@ to request use of buffer for allocation. "dma_buf->ops->" indirection from the users of this interface. In struct dma_buf_ops, unmap_dma_buf is defined as - void (*unmap_dma_buf)(struct dma_buf_attachment *, struct sg_table *); + void (*unmap_dma_buf)(struct dma_buf_attachment *, + struct sg_table *, + enum dma_data_direction); unmap_dma_buf signifies the end-of-DMA for the attachment provided. Like map_dma_buf, this API also must be implemented by the exporter. From e9f3b796484db7682ca93a255adb7677446cf9e1 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 8 Aug 2014 12:42:32 +0200 Subject: [PATCH 227/272] dma-buf/fence: Fix a kerneldoc warning kerneldoc doesn't know how to parse variables, so don't let it try. Signed-off-by: Thierry Reding Signed-off-by: Sumit Semwal --- drivers/dma-buf/fence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c index 4222cb2aa96a..7bb9d65d9a2c 100644 --- a/drivers/dma-buf/fence.c +++ b/drivers/dma-buf/fence.c @@ -29,7 +29,7 @@ EXPORT_TRACEPOINT_SYMBOL(fence_annotate_wait_on); EXPORT_TRACEPOINT_SYMBOL(fence_emit); -/** +/* * fence context counter: each execution context should have its own * fence context, this allows checking if fences belong to the same * context or not. One device can have multiple separate contexts, From 1f58d9465c568eb47cab939bbc4f30ae51863295 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 8 Aug 2014 13:06:30 +0200 Subject: [PATCH 228/272] dma-buf/fence: Fix one more kerneldoc warning The seqno_fence_init() function's cond argument isn't described in the kerneldoc comment. Fix that to silence a warning when building DocBook documentation. Signed-off-by: Thierry Reding Signed-off-by: Sumit Semwal --- include/linux/seqno-fence.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/seqno-fence.h b/include/linux/seqno-fence.h index 3d6003de4b0d..a1ba6a5ccdd6 100644 --- a/include/linux/seqno-fence.h +++ b/include/linux/seqno-fence.h @@ -62,6 +62,7 @@ to_seqno_fence(struct fence *fence) * @context: the execution context this fence is a part of * @seqno_ofs: the offset within @sync_buf * @seqno: the sequence # to signal on + * @cond: fence wait condition * @ops: the fence_ops for operations on this seqno fence * * This function initializes a struct seqno_fence with passed parameters, From 7b5af5cffce569298b1d03af1ddf1dc43570ab42 Mon Sep 17 00:00:00 2001 From: Toshiaki Makita Date: Thu, 28 Aug 2014 17:14:58 +0900 Subject: [PATCH 229/272] cfq-iosched: Add comments on update timing of weight Explain that weight has to be updated on activation. This complements previous fix e15693ef18e1 ("cfq-iosched: Fix wrong children_weight calculation"). Signed-off-by: Toshiaki Makita Signed-off-by: Jens Axboe --- block/cfq-iosched.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index d7494637c5db..3f31cf9508e6 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1272,6 +1272,9 @@ __cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) rb_insert_color(&cfqg->rb_node, &st->rb); } +/* + * This has to be called only on activation of cfqg + */ static void cfq_update_group_weight(struct cfq_group *cfqg) { @@ -1303,6 +1306,11 @@ cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) /* add to the service tree */ BUG_ON(!RB_EMPTY_NODE(&cfqg->rb_node)); + /* + * Update leaf_weight. We cannot update weight at this point + * because cfqg might already have been activated and is + * contributing its current weight to the parent's child_weight. + */ cfq_update_group_leaf_weight(cfqg); __cfq_group_service_tree_add(st, cfqg); From bc80436033838b918f21a7074f56d3a8263ccca4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 9 Apr 2014 09:28:00 +0200 Subject: [PATCH 230/272] mfd: tc3589x: Add device tree bindings This defines the device tree bindings for the Toshiba TC3589x series of multi-purpose expanders. Only the stuff I can test is defined: GPIO and keypad. Others may implement more subdevices further down the road. This is to complement commit a435ae1d51e2f18414f2a87219fdbe068231e692 "mfd: Enable the tc3589x for Device Tree" which left off the definition of the device tree bindings. Signed-off-by: Linus Walleij Signed-off-by: Lee Jones --- .../devicetree/bindings/mfd/tc3589x.txt | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/tc3589x.txt diff --git a/Documentation/devicetree/bindings/mfd/tc3589x.txt b/Documentation/devicetree/bindings/mfd/tc3589x.txt new file mode 100644 index 000000000000..6fcedba46ae9 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/tc3589x.txt @@ -0,0 +1,107 @@ +* Toshiba TC3589x multi-purpose expander + +The Toshiba TC3589x series are I2C-based MFD devices which may expose the +following built-in devices: gpio, keypad, rotator (vibrator), PWM (for +e.g. LEDs or vibrators) The included models are: + +- TC35890 +- TC35892 +- TC35893 +- TC35894 +- TC35895 +- TC35896 + +Required properties: + - compatible : must be "toshiba,tc35890", "toshiba,tc35892", "toshiba,tc35893", + "toshiba,tc35894", "toshiba,tc35895" or "toshiba,tc35896" + - reg : I2C address of the device + - interrupt-parent : specifies which IRQ controller we're connected to + - interrupts : the interrupt on the parent the controller is connected to + - interrupt-controller : marks the device node as an interrupt controller + - #interrupt-cells : should be <1>, the first cell is the IRQ offset on this + TC3589x interrupt controller. + +Optional nodes: + +- GPIO + This GPIO module inside the TC3589x has 24 (TC35890, TC35892) or 20 + (other models) GPIO lines. + - compatible : must be "toshiba,tc3589x-gpio" + - interrupts : interrupt on the parent, which must be the tc3589x MFD device + - interrupt-controller : marks the device node as an interrupt controller + - #interrupt-cells : should be <2>, the first cell is the IRQ offset on this + TC3589x GPIO interrupt controller, the second cell is the interrupt flags + in accordance with . The following + flags are valid: + - IRQ_TYPE_LEVEL_LOW + - IRQ_TYPE_LEVEL_HIGH + - IRQ_TYPE_EDGE_RISING + - IRQ_TYPE_EDGE_FALLING + - IRQ_TYPE_EDGE_BOTH + - gpio-controller : marks the device node as a GPIO controller + - #gpio-cells : should be <2>, the first cell is the GPIO offset on this + GPIO controller, the second cell is the flags. + +- Keypad + This keypad is the same on all variants, supporting up to 96 different + keys. The linux-specific properties are modeled on those already existing + in other input drivers. + - compatible : must be "toshiba,tc3589x-keypad" + - debounce-delay-ms : debounce interval in milliseconds + - keypad,num-rows : number of rows in the matrix, see + bindings/input/matrix-keymap.txt + - keypad,num-columns : number of columns in the matrix, see + bindings/input/matrix-keymap.txt + - linux,keymap: the definition can be found in + bindings/input/matrix-keymap.txt + - linux,no-autorepeat: do no enable autorepeat feature. + - linux,wakeup: use any event on keypad as wakeup event. + +Example: + +tc35893@44 { + compatible = "toshiba,tc35893"; + reg = <0x44>; + interrupt-parent = <&gpio6>; + interrupts = <26 IRQ_TYPE_EDGE_RISING>; + + interrupt-controller; + #interrupt-cells = <1>; + + tc3589x_gpio { + compatible = "toshiba,tc3589x-gpio"; + interrupts = <0>; + + interrupt-controller; + #interrupt-cells = <2>; + gpio-controller; + #gpio-cells = <2>; + }; + tc3589x_keypad { + compatible = "toshiba,tc3589x-keypad"; + interrupts = <6>; + debounce-delay-ms = <4>; + keypad,num-columns = <8>; + keypad,num-rows = <8>; + linux,no-autorepeat; + linux,wakeup; + linux,keymap = <0x0301006b + 0x04010066 + 0x06040072 + 0x040200d7 + 0x0303006a + 0x0205000e + 0x0607008b + 0x0500001c + 0x0403000b + 0x03040034 + 0x05020067 + 0x0305006c + 0x040500e7 + 0x0005009e + 0x06020073 + 0x01030039 + 0x07060069 + 0x050500d9>; + }; +}; From daebabd578647440d41fc9b48d8c7a88dc2f7ab5 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 19 Aug 2014 08:24:05 -0700 Subject: [PATCH 231/272] mfd: twl4030-power: Fix PM idle pin configuration to not conflict with regulators Commit 43fef47f94a1 (mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle) added support for configuring the PMIC to cut off resources during deeper idle states to save power. This however caused regression for n900 display power that needed the PMIC configuration to be disabled with commit d937678ab625 (ARM: dts: Revert enabling of twl configuration for n900). Turns out the root cause of the problem is that we must use TWL4030_RESCONFIG_UNDEF instead of DEV_GRP_NULL to avoid disabling regulators that may have been enabled before the init function for twl4030-power.c runs. With TWL4030_RESCONFIG_UNDEF we let the regulator framework control the regulators like it should. Here we need to only configure the sys_clken and sys_off_mode triggers for the regulators that cannot be done by the regulator framework as it's not running at that point. This allows us to enable the PMIC configuration for n900. Fixes: 43fef47f94a1 (mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle) Cc: stable@vger.kernel.org # v3.16 Signed-off-by: Tony Lindgren Tested-by: Aaro Koskinen Signed-off-by: Lee Jones --- arch/arm/boot/dts/omap3-n900.dts | 2 +- drivers/mfd/twl4030-power.c | 20 ++++++++++---------- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index b15f1a77d684..1fe45d1f75ec 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -353,7 +353,7 @@ }; twl_power: power { - compatible = "ti,twl4030-power-n900"; + compatible = "ti,twl4030-power-n900", "ti,twl4030-power-idle-osc-off"; ti,use_poweroff; }; }; diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c index 3bc969a5916b..4d3ff3771491 100644 --- a/drivers/mfd/twl4030-power.c +++ b/drivers/mfd/twl4030-power.c @@ -724,24 +724,24 @@ static struct twl4030_script *omap3_idle_scripts[] = { * above. */ static struct twl4030_resconfig omap3_idle_rconfig[] = { - TWL_REMAP_SLEEP(RES_VAUX1, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VAUX2, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VAUX3, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VAUX4, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VMMC1, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VMMC2, DEV_GRP_NULL, 0, 0), + TWL_REMAP_SLEEP(RES_VAUX1, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VAUX2, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VAUX3, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VAUX4, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VMMC1, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VMMC2, TWL4030_RESCONFIG_UNDEF, 0, 0), TWL_REMAP_OFF(RES_VPLL1, DEV_GRP_P1, 3, 1), TWL_REMAP_SLEEP(RES_VPLL2, DEV_GRP_P1, 0, 0), - TWL_REMAP_SLEEP(RES_VSIM, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VDAC, DEV_GRP_NULL, 0, 0), + TWL_REMAP_SLEEP(RES_VSIM, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VDAC, TWL4030_RESCONFIG_UNDEF, 0, 0), TWL_REMAP_SLEEP(RES_VINTANA1, TWL_DEV_GRP_P123, 1, 2), TWL_REMAP_SLEEP(RES_VINTANA2, TWL_DEV_GRP_P123, 0, 2), TWL_REMAP_SLEEP(RES_VINTDIG, TWL_DEV_GRP_P123, 1, 2), TWL_REMAP_SLEEP(RES_VIO, TWL_DEV_GRP_P123, 2, 2), TWL_REMAP_OFF(RES_VDD1, DEV_GRP_P1, 4, 1), TWL_REMAP_OFF(RES_VDD2, DEV_GRP_P1, 3, 1), - TWL_REMAP_SLEEP(RES_VUSB_1V5, DEV_GRP_NULL, 0, 0), - TWL_REMAP_SLEEP(RES_VUSB_1V8, DEV_GRP_NULL, 0, 0), + TWL_REMAP_SLEEP(RES_VUSB_1V5, TWL4030_RESCONFIG_UNDEF, 0, 0), + TWL_REMAP_SLEEP(RES_VUSB_1V8, TWL4030_RESCONFIG_UNDEF, 0, 0), TWL_REMAP_SLEEP(RES_VUSB_3V1, TWL_DEV_GRP_P123, 0, 0), /* Resource #20 USB charge pump skipped */ TWL_REMAP_SLEEP(RES_REGEN, TWL_DEV_GRP_P123, 2, 1), From d49ec52ff6ddcda178fc2476a109cf1bd1fa19ed Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Thu, 28 Aug 2014 11:09:31 -0400 Subject: [PATCH 232/272] dm crypt: fix access beyond the end of allocated space The DM crypt target accesses memory beyond allocated space resulting in a crash on 32 bit x86 systems. This bug is very old (it dates back to 2.6.25 commit 3a7f6c990ad04 "dm crypt: use async crypto"). However, this bug was masked by the fact that kmalloc rounds the size up to the next power of two. This bug wasn't exposed until 3.17-rc1 commit 298a9fa08a ("dm crypt: use per-bio data"). By switching to using per-bio data there was no longer any padding beyond the end of a dm-crypt allocated memory block. To minimize allocation overhead dm-crypt puts several structures into one block allocated with kmalloc. The block holds struct ablkcipher_request, cipher-specific scratch pad (crypto_ablkcipher_reqsize(any_tfm(cc))), struct dm_crypt_request and an initialization vector. The variable dmreq_start is set to offset of struct dm_crypt_request within this memory block. dm-crypt allocates the block with this size: cc->dmreq_start + sizeof(struct dm_crypt_request) + cc->iv_size. When accessing the initialization vector, dm-crypt uses the function iv_of_dmreq, which performs this calculation: ALIGN((unsigned long)(dmreq + 1), crypto_ablkcipher_alignmask(any_tfm(cc)) + 1). dm-crypt allocated "cc->iv_size" bytes beyond the end of dm_crypt_request structure. However, when dm-crypt accesses the initialization vector, it takes a pointer to the end of dm_crypt_request, aligns it, and then uses it as the initialization vector. If the end of dm_crypt_request is not aligned on a crypto_ablkcipher_alignmask(any_tfm(cc)) boundary the alignment causes the initialization vector to point beyond the allocated space. Fix this bug by calculating the variable iv_size_padding and adding it to the allocated size. Also correct the alignment of dm_crypt_request. struct dm_crypt_request is specific to dm-crypt (it isn't used by the crypto subsystem at all), so it is aligned on __alignof__(struct dm_crypt_request). Also align per_bio_data_size on ARCH_KMALLOC_MINALIGN, so that it is aligned as if the block was allocated with kmalloc. Reported-by: Krzysztof Kolasa Tested-by: Milan Broz Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer --- drivers/md/dm-crypt.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 2785007e0e46..cd15e0801228 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1688,6 +1688,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) unsigned int key_size, opt_params; unsigned long long tmpll; int ret; + size_t iv_size_padding; struct dm_arg_set as; const char *opt_string; char dummy; @@ -1724,20 +1725,32 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) cc->dmreq_start = sizeof(struct ablkcipher_request); cc->dmreq_start += crypto_ablkcipher_reqsize(any_tfm(cc)); - cc->dmreq_start = ALIGN(cc->dmreq_start, crypto_tfm_ctx_alignment()); - cc->dmreq_start += crypto_ablkcipher_alignmask(any_tfm(cc)) & - ~(crypto_tfm_ctx_alignment() - 1); + cc->dmreq_start = ALIGN(cc->dmreq_start, __alignof__(struct dm_crypt_request)); + + if (crypto_ablkcipher_alignmask(any_tfm(cc)) < CRYPTO_MINALIGN) { + /* Allocate the padding exactly */ + iv_size_padding = -(cc->dmreq_start + sizeof(struct dm_crypt_request)) + & crypto_ablkcipher_alignmask(any_tfm(cc)); + } else { + /* + * If the cipher requires greater alignment than kmalloc + * alignment, we don't know the exact position of the + * initialization vector. We must assume worst case. + */ + iv_size_padding = crypto_ablkcipher_alignmask(any_tfm(cc)); + } cc->req_pool = mempool_create_kmalloc_pool(MIN_IOS, cc->dmreq_start + - sizeof(struct dm_crypt_request) + cc->iv_size); + sizeof(struct dm_crypt_request) + iv_size_padding + cc->iv_size); if (!cc->req_pool) { ti->error = "Cannot allocate crypt request mempool"; goto bad; } cc->per_bio_data_size = ti->per_bio_data_size = - sizeof(struct dm_crypt_io) + cc->dmreq_start + - sizeof(struct dm_crypt_request) + cc->iv_size; + ALIGN(sizeof(struct dm_crypt_io) + cc->dmreq_start + + sizeof(struct dm_crypt_request) + iv_size_padding + cc->iv_size, + ARCH_KMALLOC_MINALIGN); cc->page_pool = mempool_create_page_pool(MIN_POOL_PAGES, 0); if (!cc->page_pool) { From 6603120e96eae9a5d6228681ae55c7fdc998d1bb Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Wed, 27 Aug 2014 18:40:03 -0400 Subject: [PATCH 233/272] ext4: update i_disksize coherently with block allocation on error path In case of delalloc block i_disksize may be less than i_size. So we have to update i_disksize each time we allocated and submitted some blocks beyond i_disksize. We weren't doing this on the error paths, so fix this. testcase: xfstest generic/019 Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/inode.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index b1ddd9352644..3aa26e9117c4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2077,6 +2077,7 @@ static int mpage_map_and_submit_extent(handle_t *handle, struct ext4_map_blocks *map = &mpd->map; int err; loff_t disksize; + int progress = 0; mpd->io_submit.io_end->offset = ((loff_t)map->m_lblk) << inode->i_blkbits; @@ -2093,8 +2094,11 @@ static int mpage_map_and_submit_extent(handle_t *handle, * is non-zero, a commit should free up blocks. */ if ((err == -ENOMEM) || - (err == -ENOSPC && ext4_count_free_clusters(sb))) + (err == -ENOSPC && ext4_count_free_clusters(sb))) { + if (progress) + goto update_disksize; return err; + } ext4_msg(sb, KERN_CRIT, "Delayed block allocation failed for " "inode %lu at logical offset %llu with" @@ -2111,15 +2115,17 @@ static int mpage_map_and_submit_extent(handle_t *handle, *give_up_on_write = true; return err; } + progress = 1; /* * Update buffer state, submit mapped pages, and get us new * extent to map */ err = mpage_map_and_submit_buffers(mpd); if (err < 0) - return err; + goto update_disksize; } while (map->m_len); +update_disksize: /* * Update on-disk size after IO is submitted. Races with * truncate are avoided by checking i_size under i_data_sem. From 022eaa7517017efe4f6538750c2b59a804dc7df7 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 27 Aug 2014 18:40:05 -0400 Subject: [PATCH 234/272] jbd2: fix infinite loop when recovering corrupt journal blocks When recovering the journal, don't fall into an infinite loop if we encounter a corrupt journal block. Instead, just skip the block and return an error, which fails the mount and thus forces the user to run a full filesystem fsck. Signed-off-by: Darrick J. Wong Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/jbd2/recovery.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 3b6bb19d60b1..00e9703d7dc6 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -426,6 +426,7 @@ static int do_one_pass(journal_t *journal, int tag_bytes = journal_tag_bytes(journal); __u32 crc32_sum = ~0; /* Transactional Checksums */ int descr_csum_size = 0; + int block_error = 0; /* * First thing is to establish what we expect to find in the log @@ -598,7 +599,8 @@ static int do_one_pass(journal_t *journal, "checksum recovering " "block %llu in log\n", blocknr); - continue; + block_error = 1; + goto skip_write; } /* Find a buffer for the new @@ -797,7 +799,8 @@ static int do_one_pass(journal_t *journal, success = -EIO; } } - + if (block_error && success == 0) + success = -EIO; return success; failed: From db9ee220361de03ee86388f9ea5e529eaad5323c Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 27 Aug 2014 18:40:07 -0400 Subject: [PATCH 235/272] jbd2: fix descriptor block size handling errors with journal_csum It turns out that there are some serious problems with the on-disk format of journal checksum v2. The foremost is that the function to calculate descriptor tag size returns sizes that are too big. This causes alignment issues on some architectures and is compounded by the fact that some parts of jbd2 use the structure size (incorrectly) to determine the presence of a 64bit journal instead of checking the feature flags. Therefore, introduce journal checksum v3, which enlarges the descriptor block tag format to allow for full 32-bit checksums of journal blocks, fix the journal tag function to return the correct sizes, and fix the jbd2 recovery code to use feature flags to determine 64bitness. Add a few function helpers so we don't have to open-code quite so many pieces. Switching to a 16-byte block size was found to increase journal size overhead by a maximum of 0.1%, to convert a 32-bit journal with no checksumming to a 32-bit journal with checksum v3 enabled. Signed-off-by: Darrick J. Wong Reported-by: TR Reardon Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/super.c | 5 ++-- fs/jbd2/commit.c | 21 ++++++++++------- fs/jbd2/journal.c | 56 +++++++++++++++++++++++++++++--------------- fs/jbd2/recovery.c | 26 +++++++++++--------- fs/jbd2/revoke.c | 6 ++--- include/linux/jbd2.h | 30 ++++++++++++++++++++---- 6 files changed, 95 insertions(+), 49 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 32b43ad154b9..0b28b36e7915 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3181,9 +3181,9 @@ static int set_journal_csum_feature_set(struct super_block *sb) if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { - /* journal checksum v2 */ + /* journal checksum v3 */ compat = 0; - incompat = JBD2_FEATURE_INCOMPAT_CSUM_V2; + incompat = JBD2_FEATURE_INCOMPAT_CSUM_V3; } else { /* journal checksum v1 */ compat = JBD2_FEATURE_COMPAT_CHECKSUM; @@ -3205,6 +3205,7 @@ static int set_journal_csum_feature_set(struct super_block *sb) jbd2_journal_clear_features(sbi->s_journal, JBD2_FEATURE_COMPAT_CHECKSUM, 0, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT | + JBD2_FEATURE_INCOMPAT_CSUM_V3 | JBD2_FEATURE_INCOMPAT_CSUM_V2); } diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 6fac74349856..b73e0215baa7 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -97,7 +97,7 @@ static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh) struct commit_header *h; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; h = (struct commit_header *)(bh->b_data); @@ -313,11 +313,11 @@ static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh) return checksum; } -static void write_tag_block(int tag_bytes, journal_block_tag_t *tag, +static void write_tag_block(journal_t *j, journal_block_tag_t *tag, unsigned long long block) { tag->t_blocknr = cpu_to_be32(block & (u32)~0); - if (tag_bytes > JBD2_TAG_SIZE32) + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_64BIT)) tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1); } @@ -327,7 +327,7 @@ static void jbd2_descr_block_csum_set(journal_t *j, struct jbd2_journal_block_tail *tail; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize - @@ -340,12 +340,13 @@ static void jbd2_descr_block_csum_set(journal_t *j, static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag, struct buffer_head *bh, __u32 sequence) { + journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag; struct page *page = bh->b_page; __u8 *addr; __u32 csum32; __be32 seq; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; seq = cpu_to_be32(sequence); @@ -355,8 +356,10 @@ static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag, bh->b_size); kunmap_atomic(addr); - /* We only have space to store the lower 16 bits of the crc32c. */ - tag->t_checksum = cpu_to_be16(csum32); + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + tag3->t_checksum = cpu_to_be32(csum32); + else + tag->t_checksum = cpu_to_be16(csum32); } /* * jbd2_journal_commit_transaction @@ -396,7 +399,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) LIST_HEAD(io_bufs); LIST_HEAD(log_bufs); - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) csum_size = sizeof(struct jbd2_journal_block_tail); /* @@ -690,7 +693,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) tag_flag |= JBD2_FLAG_SAME_UUID; tag = (journal_block_tag_t *) tagp; - write_tag_block(tag_bytes, tag, jh2bh(jh)->b_blocknr); + write_tag_block(journal, tag, jh2bh(jh)->b_blocknr); tag->t_flags = cpu_to_be16(tag_flag); jbd2_block_tag_csum_set(journal, tag, wbuf[bufs], commit_transaction->t_tid); diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 67b8e303946c..19d74d86d99c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -124,7 +124,7 @@ EXPORT_SYMBOL(__jbd2_debug); /* Checksumming functions */ static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; return sb->s_checksum_type == JBD2_CRC32C_CHKSUM; @@ -145,7 +145,7 @@ static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb) static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; return sb->s_checksum == jbd2_superblock_csum(j, sb); @@ -153,7 +153,7 @@ static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; sb->s_checksum = jbd2_superblock_csum(j, sb); @@ -1522,21 +1522,29 @@ static int journal_get_superblock(journal_t *journal) goto out; } - if (JBD2_HAS_COMPAT_FEATURE(journal, JBD2_FEATURE_COMPAT_CHECKSUM) && - JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + if (jbd2_journal_has_csum_v2or3(journal) && + JBD2_HAS_COMPAT_FEATURE(journal, JBD2_FEATURE_COMPAT_CHECKSUM)) { /* Can't have checksum v1 and v2 on at the same time! */ printk(KERN_ERR "JBD2: Can't enable checksumming v1 and v2 " "at the same time!\n"); goto out; } + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) && + JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) { + /* Can't have checksum v2 and v3 at the same time! */ + printk(KERN_ERR "JBD2: Can't enable checksumming v2 and v3 " + "at the same time!\n"); + goto out; + } + if (!jbd2_verify_csum_type(journal, sb)) { printk(KERN_ERR "JBD2: Unknown checksum type\n"); goto out; } /* Load the checksum driver */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + if (jbd2_journal_has_csum_v2or3(journal)) { journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0); if (IS_ERR(journal->j_chksum_driver)) { printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n"); @@ -1553,7 +1561,7 @@ static int journal_get_superblock(journal_t *journal) } /* Precompute checksum seed for all metadata */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, sizeof(sb->s_uuid)); @@ -1813,8 +1821,14 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, if (!jbd2_journal_check_available_features(journal, compat, ro, incompat)) return 0; - /* Asking for checksumming v2 and v1? Only give them v2. */ - if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V2 && + /* If enabling v2 checksums, turn on v3 instead */ + if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V2) { + incompat &= ~JBD2_FEATURE_INCOMPAT_CSUM_V2; + incompat |= JBD2_FEATURE_INCOMPAT_CSUM_V3; + } + + /* Asking for checksumming v3 and v1? Only give them v3. */ + if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V3 && compat & JBD2_FEATURE_COMPAT_CHECKSUM) compat &= ~JBD2_FEATURE_COMPAT_CHECKSUM; @@ -1823,8 +1837,8 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, sb = journal->j_superblock; - /* If enabling v2 checksums, update superblock */ - if (INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + /* If enabling v3 checksums, update superblock */ + if (INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V3)) { sb->s_checksum_type = JBD2_CRC32C_CHKSUM; sb->s_feature_compat &= ~cpu_to_be32(JBD2_FEATURE_COMPAT_CHECKSUM); @@ -1842,8 +1856,7 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, } /* Precompute checksum seed for all metadata */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, - JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, sizeof(sb->s_uuid)); @@ -1852,7 +1865,8 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, /* If enabling v1 checksums, downgrade superblock */ if (COMPAT_FEATURE_ON(JBD2_FEATURE_COMPAT_CHECKSUM)) sb->s_feature_incompat &= - ~cpu_to_be32(JBD2_FEATURE_INCOMPAT_CSUM_V2); + ~cpu_to_be32(JBD2_FEATURE_INCOMPAT_CSUM_V2 | + JBD2_FEATURE_INCOMPAT_CSUM_V3); sb->s_feature_compat |= cpu_to_be32(compat); sb->s_feature_ro_compat |= cpu_to_be32(ro); @@ -2165,16 +2179,20 @@ int jbd2_journal_blocks_per_page(struct inode *inode) */ size_t journal_tag_bytes(journal_t *journal) { - journal_block_tag_t tag; - size_t x = 0; + size_t sz; + + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + return sizeof(journal_block_tag3_t); + + sz = sizeof(journal_block_tag_t); if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) - x += sizeof(tag.t_checksum); + sz += sizeof(__u16); if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT)) - return x + JBD2_TAG_SIZE64; + return sz; else - return x + JBD2_TAG_SIZE32; + return sz - sizeof(__u32); } /* diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 00e9703d7dc6..9b329b55ffe3 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -181,7 +181,7 @@ static int jbd2_descr_block_csum_verify(journal_t *j, __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; tail = (struct jbd2_journal_block_tail *)(buf + j->j_blocksize - @@ -205,7 +205,7 @@ static int count_tags(journal_t *journal, struct buffer_head *bh) int nr = 0, size = journal->j_blocksize; int tag_bytes = journal_tag_bytes(journal); - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) size -= sizeof(struct jbd2_journal_block_tail); tagp = &bh->b_data[sizeof(journal_header_t)]; @@ -338,10 +338,11 @@ int jbd2_journal_skip_recovery(journal_t *journal) return err; } -static inline unsigned long long read_tag_block(int tag_bytes, journal_block_tag_t *tag) +static inline unsigned long long read_tag_block(journal_t *journal, + journal_block_tag_t *tag) { unsigned long long block = be32_to_cpu(tag->t_blocknr); - if (tag_bytes > JBD2_TAG_SIZE32) + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT)) block |= (u64)be32_to_cpu(tag->t_blocknr_high) << 32; return block; } @@ -384,7 +385,7 @@ static int jbd2_commit_block_csum_verify(journal_t *j, void *buf) __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; h = buf; @@ -399,17 +400,21 @@ static int jbd2_commit_block_csum_verify(journal_t *j, void *buf) static int jbd2_block_tag_csum_verify(journal_t *j, journal_block_tag_t *tag, void *buf, __u32 sequence) { + journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag; __u32 csum32; __be32 seq; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; seq = cpu_to_be32(sequence); csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq)); csum32 = jbd2_chksum(j, csum32, buf, j->j_blocksize); - return tag->t_checksum == cpu_to_be16(csum32); + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + return tag3->t_checksum == cpu_to_be32(csum32); + else + return tag->t_checksum == cpu_to_be16(csum32); } static int do_one_pass(journal_t *journal, @@ -513,8 +518,7 @@ static int do_one_pass(journal_t *journal, switch(blocktype) { case JBD2_DESCRIPTOR_BLOCK: /* Verify checksum first */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, - JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) descr_csum_size = sizeof(struct jbd2_journal_block_tail); if (descr_csum_size > 0 && @@ -575,7 +579,7 @@ static int do_one_pass(journal_t *journal, unsigned long long blocknr; J_ASSERT(obh != NULL); - blocknr = read_tag_block(tag_bytes, + blocknr = read_tag_block(journal, tag); /* If the block has been @@ -814,7 +818,7 @@ static int jbd2_revoke_block_csum_verify(journal_t *j, __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; tail = (struct jbd2_journal_revoke_tail *)(buf + j->j_blocksize - diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 198c9c10276d..d5e95a175c92 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -91,8 +91,8 @@ #include #include #include -#endif #include +#endif static struct kmem_cache *jbd2_revoke_record_cache; static struct kmem_cache *jbd2_revoke_table_cache; @@ -597,7 +597,7 @@ static void write_one_revoke_record(journal_t *journal, offset = *offsetp; /* Do we need to leave space at the end for a checksum? */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) csum_size = sizeof(struct jbd2_journal_revoke_tail); /* Make sure we have a descriptor with space left for the record */ @@ -644,7 +644,7 @@ static void jbd2_revoke_csum_set(journal_t *j, struct buffer_head *bh) struct jbd2_journal_revoke_tail *tail; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; tail = (struct jbd2_journal_revoke_tail *)(bh->b_data + j->j_blocksize - diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index d5b50a19463c..0dae71e9971c 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -159,7 +159,11 @@ typedef struct journal_header_s * journal_block_tag (in the descriptor). The other h_chksum* fields are * not used. * - * Checksum v1 and v2 are mutually exclusive features. + * If FEATURE_INCOMPAT_CSUM_V3 is set, the descriptor block uses + * journal_block_tag3_t to store a full 32-bit checksum. Everything else + * is the same as v2. + * + * Checksum v1, v2, and v3 are mutually exclusive features. */ struct commit_header { __be32 h_magic; @@ -179,6 +183,14 @@ struct commit_header { * raw struct shouldn't be used for pointer math or sizeof() - use * journal_tag_bytes(journal) instead to compute this. */ +typedef struct journal_block_tag3_s +{ + __be32 t_blocknr; /* The on-disk block number */ + __be32 t_flags; /* See below */ + __be32 t_blocknr_high; /* most-significant high 32bits. */ + __be32 t_checksum; /* crc32c(uuid+seq+block) */ +} journal_block_tag3_t; + typedef struct journal_block_tag_s { __be32 t_blocknr; /* The on-disk block number */ @@ -187,9 +199,6 @@ typedef struct journal_block_tag_s __be32 t_blocknr_high; /* most-significant high 32bits. */ } journal_block_tag_t; -#define JBD2_TAG_SIZE32 (offsetof(journal_block_tag_t, t_blocknr_high)) -#define JBD2_TAG_SIZE64 (sizeof(journal_block_tag_t)) - /* Tail of descriptor block, for checksumming */ struct jbd2_journal_block_tail { __be32 t_checksum; /* crc32c(uuid+descr_block) */ @@ -284,6 +293,7 @@ typedef struct journal_superblock_s #define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002 #define JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT 0x00000004 #define JBD2_FEATURE_INCOMPAT_CSUM_V2 0x00000008 +#define JBD2_FEATURE_INCOMPAT_CSUM_V3 0x00000010 /* Features known to this kernel version: */ #define JBD2_KNOWN_COMPAT_FEATURES JBD2_FEATURE_COMPAT_CHECKSUM @@ -291,7 +301,8 @@ typedef struct journal_superblock_s #define JBD2_KNOWN_INCOMPAT_FEATURES (JBD2_FEATURE_INCOMPAT_REVOKE | \ JBD2_FEATURE_INCOMPAT_64BIT | \ JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT | \ - JBD2_FEATURE_INCOMPAT_CSUM_V2) + JBD2_FEATURE_INCOMPAT_CSUM_V2 | \ + JBD2_FEATURE_INCOMPAT_CSUM_V3) #ifdef __KERNEL__ @@ -1296,6 +1307,15 @@ static inline int tid_geq(tid_t x, tid_t y) extern int jbd2_journal_blocks_per_page(struct inode *inode); extern size_t journal_tag_bytes(journal_t *journal); +static inline int jbd2_journal_has_csum_v2or3(journal_t *journal) +{ + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) || + JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + return 1; + + return 0; +} + /* * We reserve t_outstanding_credits >> JBD2_CONTROL_BLOCKS_SHIFT for * transaction control blocks. From d80d448c6c5bdd32605b78a60fe8081d82d4da0f Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 27 Aug 2014 18:40:09 -0400 Subject: [PATCH 236/272] ext4: fix same-dir rename when inline data directory overflows When performing a same-directory rename, it's possible that adding or setting the new directory entry will cause the directory to overflow the inline data area, which causes the directory to be converted to an extent-based directory. Under this circumstance it is necessary to re-read the directory when deleting the old dirent because the "old directory" context still points to i_block in the inode table, which is now an extent tree root! The delete fails with an FS error, and the subsequent fsck complains about incorrect link counts and hardlinked directories. Test case (originally found with flat_dir_test in the metadata_csum test program): # mkfs.ext4 -O inline_data /dev/sda # mount /dev/sda /mnt # mkdir /mnt/x # touch /mnt/x/changelog.gz /mnt/x/copyright /mnt/x/README.Debian # sync # for i in /mnt/x/*; do mv $i $i.longer; done # ls -la /mnt/x/ total 0 -rw-r--r-- 1 root root 0 Aug 25 12:03 changelog.gz.longer -rw-r--r-- 1 root root 0 Aug 25 12:03 copyright -rw-r--r-- 1 root root 0 Aug 25 12:03 copyright.longer -rw-r--r-- 1 root root 0 Aug 25 12:03 README.Debian.longer (Hey! Why are there four files now??) Signed-off-by: Darrick J. Wong Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/namei.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index ae7088b446d1..90a3cdca3f88 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3147,7 +3147,8 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir, return retval; } -static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent) +static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent, + int force_reread) { int retval; /* @@ -3159,7 +3160,8 @@ static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent) if (le32_to_cpu(ent->de->inode) != ent->inode->i_ino || ent->de->name_len != ent->dentry->d_name.len || strncmp(ent->de->name, ent->dentry->d_name.name, - ent->de->name_len)) { + ent->de->name_len) || + force_reread) { retval = ext4_find_delete_entry(handle, ent->dir, &ent->dentry->d_name); } else { @@ -3210,6 +3212,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, .dentry = new_dentry, .inode = new_dentry->d_inode, }; + int force_reread; int retval; dquot_initialize(old.dir); @@ -3271,6 +3274,15 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (retval) goto end_rename; } + /* + * If we're renaming a file within an inline_data dir and adding or + * setting the new dirent causes a conversion from inline_data to + * extents/blockmap, we need to force the dirent delete code to + * re-read the directory, or else we end up trying to delete a dirent + * from what is now the extent tree root (or a block map). + */ + force_reread = (new.dir->i_ino == old.dir->i_ino && + ext4_test_inode_flag(new.dir, EXT4_INODE_INLINE_DATA)); if (!new.bh) { retval = ext4_add_entry(handle, new.dentry, old.inode); if (retval) @@ -3281,6 +3293,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (retval) goto end_rename; } + if (force_reread) + force_reread = !ext4_test_inode_flag(new.dir, + EXT4_INODE_INLINE_DATA); /* * Like most other Unix systems, set the ctime for inodes on a @@ -3292,7 +3307,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, /* * ok, that's it */ - ext4_rename_delete(handle, &old); + ext4_rename_delete(handle, &old, force_reread); if (new.inode) { ext4_dec_count(handle, new.inode); From 5d1d150d7d775db1dccb4dc4676075d456dea392 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Thu, 28 Aug 2014 16:43:48 -0700 Subject: [PATCH 237/272] spi/rockchip: Avoid accidentally turning off the clock If our client is requesting a clock that is above the maximum clock then the following division will result in 0: rs->max_freq / rs->speed We'll then program 0 into the SPI_BAUDR register. The Rockchip TRM says: "If the value is 0, the serial output clock (sclk_out) is disabled." It's much better to end up with the fastest possible clock rather than a clock that is off, so enforce a minimum value. Signed-off-by: Doug Anderson Signed-off-by: Mark Brown --- drivers/spi/spi-rockchip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 6321326eb751..cd0e08b0c9f6 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -499,7 +499,7 @@ static void rockchip_spi_config(struct rockchip_spi *rs) } /* div doesn't support odd number */ - div = rs->max_freq / rs->speed; + div = max_t(u32, rs->max_freq / rs->speed, 1); div = (div + 1) & 0xfffe; spi_enable_chip(rs, 0); From 9eabc99a635a77cbf0948ce17d3cbc2b51680d4a Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 29 Aug 2014 17:26:23 +0800 Subject: [PATCH 238/272] x86, irq, PCI: Keep IRQ assignment for runtime power management Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins. We need to keep IRQ assignment for PCI devices during runtime power management, otherwise it may cause failure of device wakeups. Commit 3eec595235c17a7 "x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernation" has fixed the issue for suspend/ hibernation, we also need the same fix for runtime device sleep too. Fix: https://bugzilla.kernel.org/show_bug.cgi?id=83271 Reported-and-Tested-by: EmanueL Czirai Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: EmanueL Czirai Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Grant Likely Link: http://lkml.kernel.org/r/1409304383-18806-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 2 ++ arch/x86/kernel/apic/io_apic.c | 12 ++++++++++++ arch/x86/pci/intel_mid_pci.c | 2 +- arch/x86/pci/irq.c | 2 +- drivers/acpi/pci_irq.c | 4 ++++ 5 files changed, 20 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 0aeed5ca356e..478c490f3654 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -227,6 +227,8 @@ static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned extern void io_apic_eoi(unsigned int apic, unsigned int vector); +extern bool mp_should_keep_irq(struct device *dev); + #else /* !CONFIG_X86_IO_APIC */ #define io_apic_assign_pci_irqs 0 diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 40a4aa3f4061..337ce5a9b15c 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3959,6 +3959,18 @@ int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node) return ret; } +bool mp_should_keep_irq(struct device *dev) +{ + if (dev->power.is_prepared) + return true; +#ifdef CONFIG_PM_RUNTIME + if (dev->power.runtime_status == RPM_SUSPENDING) + return true; +#endif + + return false; +} + /* Enable IOAPIC early just for system timer */ void __init pre_init_apic_IRQ0(void) { diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 3865116c51fb..b9958c364075 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -229,7 +229,7 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev) static void intel_mid_pci_irq_disable(struct pci_dev *dev) { - if (!dev->dev.power.is_prepared && dev->irq > 0) + if (!mp_should_keep_irq(&dev->dev) && dev->irq > 0) mp_unmap_irq(dev->irq); } diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index bc1a2c341891..eb500c2592ad 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -1256,7 +1256,7 @@ static int pirq_enable_irq(struct pci_dev *dev) static void pirq_disable_irq(struct pci_dev *dev) { - if (io_apic_assign_pci_irqs && !dev->dev.power.is_prepared && + if (io_apic_assign_pci_irqs && !mp_should_keep_irq(&dev->dev) && dev->irq) { mp_unmap_irq(dev->irq); dev->irq = 0; diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index c96887d5289e..6e6b80eb0bba 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -484,6 +484,10 @@ void acpi_pci_irq_disable(struct pci_dev *dev) /* Keep IOAPIC pin configuration when suspending */ if (dev->dev.power.is_prepared) return; +#ifdef CONFIG_PM_RUNTIME + if (dev->dev.power.runtime_status == RPM_SUSPENDING) + return; +#endif entry = acpi_pci_irq_lookup(dev, pin); if (!entry) From 5691e4456a9332b5cdc0692f0963f35444711038 Mon Sep 17 00:00:00 2001 From: Michael Cree Date: Thu, 24 Jul 2014 17:53:53 -0700 Subject: [PATCH 239/272] alpha: Wire up sched_setattr, sched_getattr, and renameat2 syscalls. Signed-off-by: Michael Cree Signed-off-by: Matt Turner Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/unistd.h | 2 +- arch/alpha/include/uapi/asm/unistd.h | 3 +++ arch/alpha/kernel/systbls.S | 3 +++ 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h index f2c94402e2c8..c509d306db45 100644 --- a/arch/alpha/include/asm/unistd.h +++ b/arch/alpha/include/asm/unistd.h @@ -3,7 +3,7 @@ #include -#define NR_SYSCALLS 508 +#define NR_SYSCALLS 511 #define __ARCH_WANT_OLD_READDIR #define __ARCH_WANT_STAT64 diff --git a/arch/alpha/include/uapi/asm/unistd.h b/arch/alpha/include/uapi/asm/unistd.h index 53ae7bb1bfd1..d214a0358100 100644 --- a/arch/alpha/include/uapi/asm/unistd.h +++ b/arch/alpha/include/uapi/asm/unistd.h @@ -469,5 +469,8 @@ #define __NR_process_vm_writev 505 #define __NR_kcmp 506 #define __NR_finit_module 507 +#define __NR_sched_setattr 508 +#define __NR_sched_getattr 509 +#define __NR_renameat2 510 #endif /* _UAPI_ALPHA_UNISTD_H */ diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S index dca9b3fb0071..24789713f1ea 100644 --- a/arch/alpha/kernel/systbls.S +++ b/arch/alpha/kernel/systbls.S @@ -526,6 +526,9 @@ sys_call_table: .quad sys_process_vm_writev /* 505 */ .quad sys_kcmp .quad sys_finit_module + .quad sys_sched_setattr + .quad sys_sched_getattr + .quad sys_renameat2 /* 510 */ .size sys_call_table, . - sys_call_table .type sys_call_table, @object From 9e36c633951acb33e250e75b209b04217ce7b86c Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 24 Jul 2014 17:53:54 -0700 Subject: [PATCH 240/272] alpha: io: implement relaxed accessor macros for writes write{b,w,l,q}_relaxed are implemented by some architectures in order to permit memory-mapped I/O writes with weaker barrier semantics than the non-relaxed variants. This patch implements these write macros for Alpha, in the same vein as the relaxed read macros, which are already implemented. Acked-by: Richard Henderson Cc: Ivan Kokshaysky Signed-off-by: Will Deacon Signed-off-by: Matt Turner Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/io.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index 5ebab5895edb..f05bdb4b1cb9 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -500,10 +500,14 @@ extern inline void writeq(u64 b, volatile void __iomem *addr) #define outb_p outb #define outw_p outw #define outl_p outl -#define readb_relaxed(addr) __raw_readb(addr) -#define readw_relaxed(addr) __raw_readw(addr) -#define readl_relaxed(addr) __raw_readl(addr) -#define readq_relaxed(addr) __raw_readq(addr) +#define readb_relaxed(addr) __raw_readb(addr) +#define readw_relaxed(addr) __raw_readw(addr) +#define readl_relaxed(addr) __raw_readl(addr) +#define readq_relaxed(addr) __raw_readq(addr) +#define writeb_relaxed(b, addr) __raw_writeb(b, addr) +#define writew_relaxed(b, addr) __raw_writew(b, addr) +#define writel_relaxed(b, addr) __raw_writel(b, addr) +#define writeq_relaxed(b, addr) __raw_writeq(b, addr) #define mmiowb() From 3f6316b4378e64e96acfe55b499648dc0e6b9603 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 29 Aug 2014 15:18:26 -0700 Subject: [PATCH 241/272] checkpatch: relax check for length of git commit IDs Checkpatch currently warns if a git commit ID (in the changelog, usually) is less than 12 characters or more than 16. The "more than 16" is excessive. Change the check so we accept IDs from 12 to 40 chars in length. Cc: Geert Uytterhoeven Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 31a731e06f50..b385bcbbf2f5 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2133,7 +2133,7 @@ sub process { # Check for improperly formed commit descriptions if ($in_commit_log && $line =~ /\bcommit\s+[0-9a-f]{5,}/i && - $line !~ /\b[Cc]ommit [0-9a-f]{12,16} \("/) { + $line !~ /\b[Cc]ommit [0-9a-f]{12,40} \("/) { $line =~ /\b(c)ommit\s+([0-9a-f]{5,})/i; my $init_char = $1; my $orig_commit = lc($2); @@ -2141,7 +2141,7 @@ sub process { my $desc = 'commit description'; ($id, $desc) = git_commit_info($orig_commit, $id, $desc); ERROR("GIT_COMMIT_ID", - "Please use 12 to 16 chars for the git commit ID like: '${init_char}ommit $id (\"$desc\")'\n" . $herecurr); + "Please use 12 or more chars for the git commit ID like: '${init_char}ommit $id (\"$desc\")'\n" . $herecurr); } # Check for added, moved or deleted files From 800df627e2eabaf4a921d342a1d5162c843b7fc2 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Fri, 29 Aug 2014 15:18:29 -0700 Subject: [PATCH 242/272] resource: fix the case of null pointer access MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Richard and Daniel reported that UML is broken due to changes to resource traversal functions. Problem is that iomem_resource.child can be null and new code does not consider that possibility. Old code used a for loop and that loop will not even execute if p was null. Revert back to for() loop logic and bail out if p is null. I also moved sibling_only check out of resource_lock. There is no reason to keep it inside the lock. Following is backtrace of the UML crash. RIP: 0033:[<0000000060039b9f>] RSP: 0000000081459da0 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 00000000219b3fff RCX: 000000006010d1d9 RDX: 0000000000000001 RSI: 00000000602dfb94 RDI: 0000000081459df8 RBP: 0000000081459de0 R08: 00000000601b59f4 R09: ffffffff0000ff00 R10: ffffffff0000ff00 R11: 0000000081459e88 R12: 0000000081459df8 R13: 00000000219b3fff R14: 00000000602dfb94 R15: 0000000000000000 Kernel panic - not syncing: Segfault with no mm CPU: 0 PID: 1 Comm: swapper Not tainted 3.16.0-10454-g58d08e3 #13 Stack: 00000000 000080d0 81459df0 219b3fff 81459e70 6010d1d9 ffffffff 6033e010 81459e50 6003a269 81459e30 00000000 Call Trace: [<6010d1d9>] ? kclist_add_private+0x0/0xe7 [<6003a269>] walk_system_ram_range+0x61/0xb7 [<6000e859>] ? proc_kcore_init+0x0/0xf1 [<6010d574>] kcore_update_ram+0x4c/0x168 [<6010d72e>] ? kclist_add+0x0/0x2e [<6000e943>] proc_kcore_init+0xea/0xf1 [<6000e859>] ? proc_kcore_init+0x0/0xf1 [<6000e859>] ? proc_kcore_init+0x0/0xf1 [<600189f0>] do_one_initcall+0x13c/0x204 [<6004ca46>] ? parse_args+0x1df/0x2e0 [<6004c82d>] ? parameq+0x0/0x3a [<601b5990>] ? strcpy+0x0/0x18 [<60001e1a>] kernel_init_freeable+0x240/0x31e [<6026f1c0>] kernel_init+0x12/0x148 [<60019fad>] new_thread_handler+0x81/0xa3 Fixes 8c86e70acead629aacb4a ("resource: provide new functions to walk through resources"). Reported-by: Daniel Walter Tested-by: Richard Weinberger Tested-by: Toralf Förster Tested-by: Daniel Walter Signed-off-by: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/resource.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/kernel/resource.c b/kernel/resource.c index da14b8d09296..60c5a3856ab7 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -351,15 +351,12 @@ static int find_next_iomem_res(struct resource *res, char *name, end = res->end; BUG_ON(start >= end); + if (first_level_children_only) + sibling_only = true; + read_lock(&resource_lock); - if (first_level_children_only) { - p = iomem_resource.child; - sibling_only = true; - } else - p = &iomem_resource; - - while ((p = next_resource(p, sibling_only))) { + for (p = iomem_resource.child; p; p = next_resource(p, sibling_only)) { if (p->flags != res->flags) continue; if (name && strcmp(p->name, name)) From 0cfb8f0c3e21e36d4a6e472e4c419d58ba848698 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 29 Aug 2014 15:18:31 -0700 Subject: [PATCH 243/272] memblock, memhotplug: fix wrong type in memblock_find_in_range_node(). In memblock_find_in_range_node(), we defined ret as int. But it should be phys_addr_t because it is used to store the return value from __memblock_find_range_bottom_up(). The bug has not been triggered because when allocating low memory near the kernel end, the "int ret" won't turn out to be negative. When we started to allocate memory on other nodes, and the "int ret" could be minus. Then the kernel will panic. A simple way to reproduce this: comment out the following code in numa_init(), memblock_set_bottom_up(false); and the kernel won't boot. Reported-by: Xishi Qiu Signed-off-by: Tang Chen Tested-by: Xishi Qiu Cc: [3.13+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memblock.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 6d2f219a48b0..70fad0c0dafb 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -192,8 +192,7 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, phys_addr_t start, phys_addr_t end, int nid) { - int ret; - phys_addr_t kernel_end; + phys_addr_t kernel_end, ret; /* pump up @end */ if (end == MEMBLOCK_ALLOC_ACCESSIBLE) From ce8369bcbeeea6dfe24a6c8f60d2fcfce0432830 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Fri, 29 Aug 2014 15:18:33 -0700 Subject: [PATCH 244/272] mm: actually clear pmd_numa before invalidating Commit 67f87463d3a3 ("mm: clear pmd_numa before invalidating") cleared the NUMA bit in a copy of the PMD entry, but then wrote back the original Signed-off-by: Matthew Wilcox Acked-by: Mel Gorman Reviewed-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/pgtable-generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index a8b919925934..dfb79e028ecb 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -195,7 +195,7 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, pmd_t entry = *pmdp; if (pmd_numa(entry)) entry = pmd_mknonnuma(entry); - set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(*pmdp)); + set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(entry)); flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ From 0c38e1fe0fced6aa06dbf444f7203dd7f325e369 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Fri, 29 Aug 2014 15:18:35 -0700 Subject: [PATCH 245/272] lib: turn CONFIG_STACKTRACE into an actual option. I was puzzled why /proc/$$/stack had disappeared, until I figured out I had disabled the last debug option that did a 'select STACKTRACE'. This patch makes the option show up at config time, so it can be enabled without enabling any of the more heavyweight debug options. Signed-off-by: Dave Jones Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/Kconfig.debug | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1b233fc67466..a28590083622 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1036,8 +1036,13 @@ config TRACE_IRQFLAGS either tracing or lock debugging. config STACKTRACE - bool + bool "Stack backtrace support" depends on STACKTRACE_SUPPORT + help + This option causes the kernel to create a /proc/pid/stack for + every process, showing its current stack trace. + It is also used by various kernel debugging features that require + stack trace generation. config DEBUG_KOBJECT bool "kobject debugging" From 0cf1e9d6c34d4c82ac3af8015594849814843d36 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Fri, 29 Aug 2014 15:18:37 -0700 Subject: [PATCH 246/272] zram: fix incorrect stat with failed_reads Since we allocate a temporary buffer in zram_bvec_read to handle partial page operations in commit 924bd88d703e ("Staging: zram: allow partial page operations"), our ->failed_reads value may be incorrect as we do not increase its value when failing to allocate the temporary buffer. Let's fix this issue and correct the annotation of failed_reads. Signed-off-by: Chao Yu Acked-by: Minchan Kim Cc: Nitin Gupta Acked-by: Jerome Marchand Acked-by: Sergey Senozhatsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/zram/zram_drv.c | 10 +++++++--- drivers/block/zram/zram_drv.h | 2 +- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index dfa4024c448a..d00831c3d731 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -378,7 +378,6 @@ static int zram_decompress_page(struct zram *zram, char *mem, u32 index) /* Should NEVER happen. Return bio error if it does. */ if (unlikely(ret)) { pr_err("Decompression failed! err=%d, page=%u\n", ret, index); - atomic64_inc(&zram->stats.failed_reads); return ret; } @@ -547,8 +546,6 @@ out: zcomp_strm_release(zram->comp, zstrm); if (is_partial_io(bvec)) kfree(uncmem); - if (ret) - atomic64_inc(&zram->stats.failed_writes); return ret; } @@ -566,6 +563,13 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, ret = zram_bvec_write(zram, bvec, index, offset); } + if (unlikely(ret)) { + if (rw == READ) + atomic64_inc(&zram->stats.failed_reads); + else + atomic64_inc(&zram->stats.failed_writes); + } + return ret; } diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index 5b0afde729cd..e0f725c87cc6 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -84,7 +84,7 @@ struct zram_stats { atomic64_t compr_data_size; /* compressed size of pages stored */ atomic64_t num_reads; /* failed + successful */ atomic64_t num_writes; /* --do-- */ - atomic64_t failed_reads; /* should NEVER! happen */ + atomic64_t failed_reads; /* can happen when memory is too low */ atomic64_t failed_writes; /* can happen when memory is too low */ atomic64_t invalid_io; /* non-page-aligned I/O requests */ atomic64_t notify_free; /* no. of swap slot free notifications */ From 137f8cff505ace6251dc442c7aa973d60c801a79 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 29 Aug 2014 15:18:40 -0700 Subject: [PATCH 247/272] mm/zpool: use prefixed module loading To avoid potential format string expansion via module parameters, do not use the zpool type directly in request_module() without a format string. Additionally, to avoid arbitrary modules being loaded via zpool API (e.g. via the zswap_zpool_type module parameter) add a "zpool-" prefix to the requested module, as well as module aliases for the existing zpool types (zbud and zsmalloc). Signed-off-by: Kees Cook Cc: Seth Jennings Cc: Minchan Kim Cc: Nitin Gupta Acked-by: Dan Streetman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/zbud.c | 1 + mm/zpool.c | 2 +- mm/zsmalloc.c | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/zbud.c b/mm/zbud.c index a05790b1915e..f26e7fcc7fa2 100644 --- a/mm/zbud.c +++ b/mm/zbud.c @@ -195,6 +195,7 @@ static struct zpool_driver zbud_zpool_driver = { .total_size = zbud_zpool_total_size, }; +MODULE_ALIAS("zpool-zbud"); #endif /* CONFIG_ZPOOL */ /***************** diff --git a/mm/zpool.c b/mm/zpool.c index e40612a1df00..739cdf0d183a 100644 --- a/mm/zpool.c +++ b/mm/zpool.c @@ -150,7 +150,7 @@ struct zpool *zpool_create_pool(char *type, gfp_t gfp, struct zpool_ops *ops) driver = zpool_get_driver(type); if (!driver) { - request_module(type); + request_module("zpool-%s", type); driver = zpool_get_driver(type); } diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 4e2fc83cb394..94f38fac5e81 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -315,6 +315,7 @@ static struct zpool_driver zs_zpool_driver = { .total_size = zs_zpool_total_size, }; +MODULE_ALIAS("zpool-zsmalloc"); #endif /* CONFIG_ZPOOL */ /* per-cpu VM mapping areas for zspage accesses that cross page boundaries */ From 7ea8574e5fa31f43d8098a028f12ba6a9c9f3530 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Fri, 29 Aug 2014 15:18:42 -0700 Subject: [PATCH 248/272] hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked spin_lock may be an empty struct for !SMP configurations and so arch_spin_is_locked may return unconditional 0 and trigger the VM_BUG_ON even when the lock is held. Replace spin_is_locked by lockdep_assert_held. We will not BUG anymore but it is questionable whether crashing makes a lot of sense in the uncharge path. Uncharge happens after the last page reference was released so nobody should touch the page and the function doesn't update any shared state except for res counter which uses synchronization of its own. Signed-off-by: Michal Hocko Reviewed-by: Aneesh Kumar K.V Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hugetlb_cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c index 9eebfadeeee1..a67c26e0f360 100644 --- a/mm/hugetlb_cgroup.c +++ b/mm/hugetlb_cgroup.c @@ -217,7 +217,7 @@ void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, if (hugetlb_cgroup_disabled()) return; - VM_BUG_ON(!spin_is_locked(&hugetlb_lock)); + lockdep_assert_held(&hugetlb_lock); h_cg = hugetlb_cgroup_from_page(page); if (unlikely(!h_cg)) return; From b38af4721f59d0b564468f623b3e52a638195015 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 29 Aug 2014 15:18:44 -0700 Subject: [PATCH 249/272] x86,mm: fix pte_special versus pte_numa Sasha Levin has shown oopses on ffffea0003480048 and ffffea0003480008 at mm/memory.c:1132, running Trinity on different 3.16-rc-next kernels: where zap_pte_range() checks page->mapping to see if PageAnon(page). Those addresses fit struct pages for pfns d2001 and d2000, and in each dump a register or a stack slot showed d2001730 or d2000730: pte flags 0x730 are PCD ACCESSED PROTNONE SPECIAL IOMAP; and Sasha's e820 map has a hole between cfffffff and 100000000, which would need special access. Commit c46a7c817e66 ("x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels") has broken vm_normal_page(): a PROTNONE SPECIAL pte no longer passes the pte_special() test, so zap_pte_range() goes on to try to access a non-existent struct page. Fix this by refining pte_special() (SPECIAL with PRESENT or PROTNONE) to complement pte_numa() (SPECIAL with neither PRESENT nor PROTNONE). A hint that this was a problem was that c46a7c817e66 added pte_numa() test to vm_normal_page(), and moved its is_zero_pfn() test from slow to fast path: This was papering over a pte_special() snag when the zero page was encountered during zap. This patch reverts vm_normal_page() to how it was before, relying on pte_special(). It still appears that this patch may be incomplete: aren't there other places which need to be handling PROTNONE along with PRESENT? For example, pte_mknuma() clears _PAGE_PRESENT and sets _PAGE_NUMA, but on a PROT_NONE area, that would make it pte_special(). This is side-stepped by the fact that NUMA hinting faults skipped PROT_NONE VMAs and there are no grounds where a NUMA hinting fault on a PROT_NONE VMA would be interesting. Fixes: c46a7c817e66 ("x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels") Reported-by: Sasha Levin Tested-by: Sasha Levin Signed-off-by: Hugh Dickins Signed-off-by: Mel Gorman Cc: "Kirill A. Shutemov" Cc: Peter Zijlstra Cc: Rik van Riel Cc: Johannes Weiner Cc: Cyrill Gorcunov Cc: Matthew Wilcox Cc: [3.16] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/include/asm/pgtable.h | 9 +++++++-- mm/memory.c | 7 +++---- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 0ec056012618..aa97a070f09f 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -131,8 +131,13 @@ static inline int pte_exec(pte_t pte) static inline int pte_special(pte_t pte) { - return (pte_flags(pte) & (_PAGE_PRESENT|_PAGE_SPECIAL)) == - (_PAGE_PRESENT|_PAGE_SPECIAL); + /* + * See CONFIG_NUMA_BALANCING pte_numa in include/asm-generic/pgtable.h. + * On x86 we have _PAGE_BIT_NUMA == _PAGE_BIT_GLOBAL+1 == + * __PAGE_BIT_SOFTW1 == _PAGE_BIT_SPECIAL. + */ + return (pte_flags(pte) & _PAGE_SPECIAL) && + (pte_flags(pte) & (_PAGE_PRESENT|_PAGE_PROTNONE)); } static inline unsigned long pte_pfn(pte_t pte) diff --git a/mm/memory.c b/mm/memory.c index ab3537bcfed2..adeac306610f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -751,7 +751,7 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn = pte_pfn(pte); if (HAVE_PTE_SPECIAL) { - if (likely(!pte_special(pte) || pte_numa(pte))) + if (likely(!pte_special(pte))) goto check_pfn; if (vma->vm_flags & (VM_PFNMAP | VM_MIXEDMAP)) return NULL; @@ -777,15 +777,14 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, } } + if (is_zero_pfn(pfn)) + return NULL; check_pfn: if (unlikely(pfn > highest_memmap_pfn)) { print_bad_pte(vma, addr, pte, NULL); return NULL; } - if (is_zero_pfn(pfn)) - return NULL; - /* * NOTE! We still have PageReserved() pages in the page tables. * eg. VDSO mappings can cause them to exist. From 74ca317c26a3f8543203b61d262c0ab2e30c384e Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Fri, 29 Aug 2014 15:18:46 -0700 Subject: [PATCH 250/272] kexec: create a new config option CONFIG_KEXEC_FILE for new syscall Currently new system call kexec_file_load() and all the associated code compiles if CONFIG_KEXEC=y. But new syscall also compiles purgatory code which currently uses gcc option -mcmodel=large. This option seems to be available only gcc 4.4 onwards. Hiding new functionality behind a new config option will not break existing users of old gcc. Those who wish to enable new functionality will require new gcc. Having said that, I am trying to figure out how can I move away from using -mcmodel=large but that can take a while. I think there are other advantages of introducing this new config option. As this option will be enabled only on x86_64, other arches don't have to compile generic kexec code which will never be used. This new code selects CRYPTO=y and CRYPTO_SHA256=y. And all other arches had to do this for CONFIG_KEXEC. Now with introduction of new config option, we can remove crypto dependency from other arches. Now CONFIG_KEXEC_FILE is available only on x86_64. So whereever I had CONFIG_X86_64 defined, I got rid of that. For CONFIG_KEXEC_FILE, instead of doing select CRYPTO=y, I changed it to "depends on CRYPTO=y". This should be safer as "select" is not recursive. Signed-off-by: Vivek Goyal Cc: Eric Biederman Cc: H. Peter Anvin Tested-by: Shaun Ruffell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/Kbuild | 4 +--- arch/x86/Kconfig | 18 ++++++++++++++---- arch/x86/Makefile | 5 +---- arch/x86/kernel/Makefile | 2 +- arch/x86/kernel/crash.c | 6 ++---- arch/x86/kernel/machine_kexec_64.c | 11 +++++++++++ arch/x86/purgatory/Makefile | 5 +---- kernel/kexec.c | 11 +++++++++++ 8 files changed, 42 insertions(+), 20 deletions(-) diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild index 61b6d51866f8..3942f74c92d7 100644 --- a/arch/x86/Kbuild +++ b/arch/x86/Kbuild @@ -17,6 +17,4 @@ obj-$(CONFIG_IA32_EMULATION) += ia32/ obj-y += platform/ obj-y += net/ -ifeq ($(CONFIG_X86_64),y) -obj-$(CONFIG_KEXEC) += purgatory/ -endif +obj-$(CONFIG_KEXEC_FILE) += purgatory/ diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5d0bf1aa9dcb..778178f4c7d1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1585,9 +1585,6 @@ source kernel/Kconfig.hz config KEXEC bool "kexec system call" - select BUILD_BIN2C - select CRYPTO - select CRYPTO_SHA256 ---help--- kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot @@ -1602,9 +1599,22 @@ config KEXEC interface is strongly in flux, so no good recommendation can be made. +config KEXEC_FILE + bool "kexec file based system call" + select BUILD_BIN2C + depends on KEXEC + depends on X86_64 + depends on CRYPTO=y + depends on CRYPTO_SHA256=y + ---help--- + This is new version of kexec system call. This system call is + file based and takes file descriptors as system call argument + for kernel and initramfs as opposed to list of segments as + accepted by previous system call. + config KEXEC_VERIFY_SIG bool "Verify kernel signature during kexec_file_load() syscall" - depends on KEXEC + depends on KEXEC_FILE ---help--- This option makes kernel signature verification mandatory for kexec_file_load() syscall. If kernel is signature can not be diff --git a/arch/x86/Makefile b/arch/x86/Makefile index c1aa36887843..c96bcec544fc 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -184,11 +184,8 @@ archheaders: $(Q)$(MAKE) $(build)=arch/x86/syscalls all archprepare: -ifeq ($(CONFIG_KEXEC),y) -# Build only for 64bit. No loaders for 32bit yet. - ifeq ($(CONFIG_X86_64),y) +ifeq ($(CONFIG_KEXEC_FILE),y) $(Q)$(MAKE) $(build)=arch/x86/purgatory arch/x86/purgatory/kexec-purgatory.c - endif endif ### diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index b5ea75c4a4b4..ada2e2d6be3e 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -71,6 +71,7 @@ obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o obj-$(CONFIG_X86_TSC) += trace_clock.o obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o obj-$(CONFIG_KEXEC) += relocate_kernel_$(BITS).o crash.o +obj-$(CONFIG_KEXEC_FILE) += kexec-bzimage64.o obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o obj-y += kprobes/ obj-$(CONFIG_MODULES) += module.o @@ -118,5 +119,4 @@ ifeq ($(CONFIG_X86_64),y) obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o obj-y += vsmp_64.o - obj-$(CONFIG_KEXEC) += kexec-bzimage64.o endif diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 0553a34fa0df..a618fcd2c07d 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -182,8 +182,7 @@ void native_machine_crash_shutdown(struct pt_regs *regs) crash_save_cpu(regs, safe_smp_processor_id()); } -#ifdef CONFIG_X86_64 - +#ifdef CONFIG_KEXEC_FILE static int get_nr_ram_ranges_callback(unsigned long start_pfn, unsigned long nr_pfn, void *arg) { @@ -696,5 +695,4 @@ int crash_load_segments(struct kimage *image) return ret; } - -#endif /* CONFIG_X86_64 */ +#endif /* CONFIG_KEXEC_FILE */ diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 8b04018e5d1f..485981059a40 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -25,9 +25,11 @@ #include #include +#ifdef CONFIG_KEXEC_FILE static struct kexec_file_ops *kexec_file_loaders[] = { &kexec_bzImage64_ops, }; +#endif static void free_transition_pgtable(struct kimage *image) { @@ -178,6 +180,7 @@ static void load_segments(void) ); } +#ifdef CONFIG_KEXEC_FILE /* Update purgatory as needed after various image segments have been prepared */ static int arch_update_purgatory(struct kimage *image) { @@ -209,6 +212,12 @@ static int arch_update_purgatory(struct kimage *image) return ret; } +#else /* !CONFIG_KEXEC_FILE */ +static inline int arch_update_purgatory(struct kimage *image) +{ + return 0; +} +#endif /* CONFIG_KEXEC_FILE */ int machine_kexec_prepare(struct kimage *image) { @@ -329,6 +338,7 @@ void arch_crash_save_vmcoreinfo(void) /* arch-dependent functionality related to kexec file-based syscall */ +#ifdef CONFIG_KEXEC_FILE int arch_kexec_kernel_image_probe(struct kimage *image, void *buf, unsigned long buf_len) { @@ -522,3 +532,4 @@ overflow: (int)ELF64_R_TYPE(rel[i].r_info), value); return -ENOEXEC; } +#endif /* CONFIG_KEXEC_FILE */ diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 7fde9ee438a4..c4ae06e4ae74 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -24,7 +24,4 @@ $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE $(call if_changed,bin2c) -# No loaders for 32bits yet. -ifeq ($(CONFIG_X86_64),y) - obj-$(CONFIG_KEXEC) += kexec-purgatory.o -endif +obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o diff --git a/kernel/kexec.c b/kernel/kexec.c index 0b49a0a58102..2bee072268d9 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -64,7 +64,9 @@ bool kexec_in_progress = false; char __weak kexec_purgatory[0]; size_t __weak kexec_purgatory_size = 0; +#ifdef CONFIG_KEXEC_FILE static int kexec_calculate_store_digests(struct kimage *image); +#endif /* Location of the reserved area for the crash kernel */ struct resource crashk_res = { @@ -341,6 +343,7 @@ out_free_image: return ret; } +#ifdef CONFIG_KEXEC_FILE static int copy_file_from_fd(int fd, void **buf, unsigned long *buf_len) { struct fd f = fdget(fd); @@ -612,6 +615,9 @@ out_free_image: kfree(image); return ret; } +#else /* CONFIG_KEXEC_FILE */ +static inline void kimage_file_post_load_cleanup(struct kimage *image) { } +#endif /* CONFIG_KEXEC_FILE */ static int kimage_is_destination_range(struct kimage *image, unsigned long start, @@ -1375,6 +1381,7 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry, } #endif +#ifdef CONFIG_KEXEC_FILE SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd, unsigned long, cmdline_len, const char __user *, cmdline_ptr, unsigned long, flags) @@ -1451,6 +1458,8 @@ out: return ret; } +#endif /* CONFIG_KEXEC_FILE */ + void crash_kexec(struct pt_regs *regs) { /* Take the kexec_mutex here to prevent sys_kexec_load @@ -2006,6 +2015,7 @@ static int __init crash_save_vmcoreinfo_init(void) subsys_initcall(crash_save_vmcoreinfo_init); +#ifdef CONFIG_KEXEC_FILE static int __kexec_add_segment(struct kimage *image, char *buf, unsigned long bufsz, unsigned long mem, unsigned long memsz) @@ -2682,6 +2692,7 @@ int kexec_purgatory_get_set_symbol(struct kimage *image, const char *name, return 0; } +#endif /* CONFIG_KEXEC_FILE */ /* * Move into place and start executing a preloaded standalone From b41d34b46aa91e0c83300c38eebc0b8762705e82 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Fri, 29 Aug 2014 15:18:49 -0700 Subject: [PATCH 251/272] kexec: remove CONFIG_KEXEC dependency on crypto New system call depends on crypto. As it did not have a separate config option, CONFIG_KEXEC was modified to select CRYPTO and CRYPTO_SHA256. But now previous patch introduced a new config option for new syscall. So CONFIG_KEXEC does not require crypto. Remove that dependency. Signed-off-by: Vivek Goyal Cc: Eric Biederman Cc: H. Peter Anvin Cc: Shaun Ruffell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/Kconfig | 2 -- arch/ia64/Kconfig | 2 -- arch/m68k/Kconfig | 2 -- arch/mips/Kconfig | 2 -- arch/powerpc/Kconfig | 2 -- arch/s390/Kconfig | 2 -- arch/sh/Kconfig | 2 -- arch/tile/Kconfig | 2 -- 8 files changed, 16 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c49a775937db..32cbbd565902 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1983,8 +1983,6 @@ config XIP_PHYS_ADDR config KEXEC bool "Kexec system call (EXPERIMENTAL)" depends on (!SMP || PM_SLEEP_SMP) - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 64aefb76bd69..c84c88bbbbd7 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -549,8 +549,6 @@ source "drivers/sn/Kconfig" config KEXEC bool "kexec system call" depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 3ff8c9a25335..87b7c7581b1d 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -91,8 +91,6 @@ config MMU_SUN3 config KEXEC bool "kexec system call" depends on M68KCLASSIC - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index df51e78a72cc..900c7e5333b6 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2396,8 +2396,6 @@ source "kernel/Kconfig.preempt" config KEXEC bool "Kexec system call" - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index a577609f8ed6..4bc7b62fb4b6 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -399,8 +399,6 @@ config PPC64_SUPPORTS_MEMORY_FAILURE config KEXEC bool "kexec system call" depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index ab39ceb89ecf..05c78bb5f570 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -48,8 +48,6 @@ config ARCH_SUPPORTS_DEBUG_PAGEALLOC config KEXEC def_bool y - select CRYPTO - select CRYPTO_SHA256 config AUDIT_ARCH def_bool y diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index b319846ad97f..244fb4c81e25 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -598,8 +598,6 @@ source kernel/Kconfig.hz config KEXEC bool "kexec system call (EXPERIMENTAL)" depends on SUPERH32 && MMU - select CRYPTO - select CRYPTO_SHA256 help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index a3ffe2dd4832..7fcd492adbfc 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -191,8 +191,6 @@ source "kernel/Kconfig.hz" config KEXEC bool "kexec system call" - select CRYPTO - select CRYPTO_SHA256 ---help--- kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot From bfcfd44cce2774f19daeb59fb4e43fc9aa80e7b8 Mon Sep 17 00:00:00 2001 From: Filipe Brandenburger Date: Fri, 29 Aug 2014 15:18:51 -0700 Subject: [PATCH 252/272] xattr: fix check for simultaneous glibc header inclusion The guard was introduced in commit ea1a8217b06b ("xattr: guard against simultaneous glibc header inclusion") but it is using #ifdef to check for a define that is either set to 1 or 0. Fix it to use #if instead. * Without this patch: $ { echo "#include "; echo "#include "; } | gcc -E -Iinclude/uapi - >/dev/null include/uapi/linux/xattr.h:19:0: warning: "XATTR_CREATE" redefined [enabled by default] #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */ ^ /usr/include/x86_64-linux-gnu/sys/xattr.h:32:0: note: this is the location of the previous definition #define XATTR_CREATE XATTR_CREATE ^ * With this patch: $ { echo "#include "; echo "#include "; } | gcc -E -Iinclude/uapi - >/dev/null (no warnings) Signed-off-by: Filipe Brandenburger Acked-by: Serge E. Hallyn Cc: Allan McRae Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/uapi/linux/xattr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h index c38355c1f3c9..1590c49cae57 100644 --- a/include/uapi/linux/xattr.h +++ b/include/uapi/linux/xattr.h @@ -13,7 +13,7 @@ #ifndef _UAPI_LINUX_XATTR_H #define _UAPI_LINUX_XATTR_H -#ifdef __UAPI_DEF_XATTR +#if __UAPI_DEF_XATTR #define __USE_KERNEL_XATTR_DEFS #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */ From b7d5b9a9686674eedffe5b8745c85265f3fe3367 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 29 Aug 2014 15:18:53 -0700 Subject: [PATCH 253/272] drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified The rtc-s5m driver used to support devices without irq specified in the past. Re-add this support. The patch fixes boot for Insignal's Exynos4412 based Origen board. Error messages before the patch: ... Unable to handle kernel NULL pointer dereference at virtual address 00000094 pgd = c0004000 [00000094] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.16.0-next-20140804-00008-ga59480f-dirty #701 task: ea80f000 ti: ea882000 task.ti: ea882000 PC is at regmap_irq_get_virq+0x0/0x28 LR is at s5m_rtc_probe+0xdc/0x310 pc : [] lr : [] psr: 80000153 sp : ea883e48 ip : 00000000 fp : 00000000 r10: 0000000c r9 : c05de7ac r8 : eaabc600 r7 : eaa6b4d0 r6 : c0439e8c r5 : eaabc610 r4 : eab30e50 r3 : 00000000 r2 : 00000000 r1 : 0000000c r0 : 00000000 Flags: Nzcv IRQs on FIQs off Mode SVC_32 ISA ARM Segment kernel Control: 10c5387d Table: 4000404a DAC: 00000015 Process swapper/0 (pid: 1, stack limit = 0xea882240) Backtrace: regmap_irq_get_virq s5m_rtc_probe platform_drv_probe driver_probe_device __driver_attach bus_for_each_dev bus_add_driver driver_register do_one_initcall kernel_init_freeable kernel_init ---[ end trace a954d7f019122700 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ... Signed-off-by: Bartlomiej Zolnierkiewicz Reviewed-by: Krzysztof Kozlowski Tested-by: Krzysztof Kozlowski Acked-by: Kyungmin Park Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-s5m.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c index 8f06250a0389..8754c33361e8 100644 --- a/drivers/rtc/rtc-s5m.c +++ b/drivers/rtc/rtc-s5m.c @@ -717,12 +717,14 @@ static int s5m_rtc_probe(struct platform_device *pdev) info->device_type = s5m87xx->device_type; info->wtsr_smpl = s5m87xx->wtsr_smpl; - info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); - if (info->irq <= 0) { - ret = -EINVAL; - dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", + if (s5m87xx->irq_data) { + info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); + if (info->irq <= 0) { + ret = -EINVAL; + dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", alarm_irq); - goto err; + goto err; + } } platform_set_drvdata(pdev, info); @@ -744,6 +746,11 @@ static int s5m_rtc_probe(struct platform_device *pdev) goto err; } + if (!info->irq) { + dev_info(&pdev->dev, "Alarm IRQ not available\n"); + return 0; + } + ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, s5m_rtc_alarm_irq, 0, "rtc-alarm0", info); @@ -802,7 +809,7 @@ static int s5m_rtc_resume(struct device *dev) struct s5m_rtc_info *info = dev_get_drvdata(dev); int ret = 0; - if (device_may_wakeup(dev)) + if (info->irq && device_may_wakeup(dev)) ret = disable_irq_wake(info->irq); return ret; @@ -813,7 +820,7 @@ static int s5m_rtc_suspend(struct device *dev) struct s5m_rtc_info *info = dev_get_drvdata(dev); int ret = 0; - if (device_may_wakeup(dev)) + if (info->irq && device_may_wakeup(dev)) ret = enable_irq_wake(info->irq); return ret; From 4df4185a596c7301be0d8e1fdf691ec03e57cd23 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Fri, 29 Aug 2014 15:18:55 -0700 Subject: [PATCH 254/272] x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory Thomas reported that build of x86_64 kernel was failing for him. He is using 32bit tool chain. Problem is that while compiling purgatory, I have not specified -m64 flag. And 32bit tool chain must be assuming -m32 by default. Following is error message. (mini) [~/work/linux-2.6] make scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release UPD include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h CC arch/x86/purgatory/purgatory.o arch/x86/purgatory/purgatory.c:1:0: error: code model 'large' not supported in the 32 bit mode Fix it by explicitly passing appropriate -m64/-m32 build flag for purgatory. Reported-by: Thomas Glanzmann Tested-by: Thomas Glanzmann Suggested-by: H. Peter Anvin Signed-off-by: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/purgatory/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index c4ae06e4ae74..899dd2454256 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -11,6 +11,7 @@ targets += purgatory.ro # sure how to relocate those. Like kexec-tools, use custom flags. KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large +KBUILD_CFLAGS += -m$(BITS) $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE $(call if_changed,ld) From 2b462638e41ea62230297c21c4da9955937b7a3c Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 29 Aug 2014 15:18:58 -0700 Subject: [PATCH 255/272] ocfs2: do not write error flag to user structure we cannot copy from/to If we failed to copy from the structure, writing back the flags leaks 31 bits of kernel memory (the rest of the ir_flags field). In any case, if we cannot copy from/to the structure, why should we expect putting just the flags to work? Also make sure ocfs2_info_handle_freeinode() returns the right error code if the copy_to_user() fails. Fixes: ddee5cdb70e6 ('Ocfs2: Add new OCFS2_IOC_INFO ioctl for ocfs2 v8.') Signed-off-by: Ben Hutchings Cc: Joel Becker Acked-by: Mark Fasheh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/ioctl.c | 129 ++++++++++++++++------------------------------- 1 file changed, 43 insertions(+), 86 deletions(-) diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 6f66b3751ace..53e6c40ed4c6 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -35,9 +35,8 @@ copy_to_user((typeof(a) __user *)b, &(a), sizeof(a)) /* - * This call is void because we are already reporting an error that may - * be -EFAULT. The error will be returned from the ioctl(2) call. It's - * just a best-effort to tell userspace that this request caused the error. + * This is just a best-effort to tell userspace that this request + * caused the error. */ static inline void o2info_set_request_error(struct ocfs2_info_request *kreq, struct ocfs2_info_request __user *req) @@ -146,136 +145,105 @@ bail: static int ocfs2_info_handle_blocksize(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_blocksize oib; if (o2info_from_user(oib, req)) - goto bail; + return -EFAULT; oib.ib_blocksize = inode->i_sb->s_blocksize; o2info_set_request_filled(&oib.ib_req); if (o2info_to_user(oib, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oib.ib_req, req); - - return status; + return 0; } static int ocfs2_info_handle_clustersize(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_clustersize oic; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oic, req)) - goto bail; + return -EFAULT; oic.ic_clustersize = osb->s_clustersize; o2info_set_request_filled(&oic.ic_req); if (o2info_to_user(oic, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oic.ic_req, req); - - return status; + return 0; } static int ocfs2_info_handle_maxslots(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_maxslots oim; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oim, req)) - goto bail; + return -EFAULT; oim.im_max_slots = osb->max_slots; o2info_set_request_filled(&oim.im_req); if (o2info_to_user(oim, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oim.im_req, req); - - return status; + return 0; } static int ocfs2_info_handle_label(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_label oil; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oil, req)) - goto bail; + return -EFAULT; memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN); o2info_set_request_filled(&oil.il_req); if (o2info_to_user(oil, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oil.il_req, req); - - return status; + return 0; } static int ocfs2_info_handle_uuid(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_uuid oiu; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oiu, req)) - goto bail; + return -EFAULT; memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1); o2info_set_request_filled(&oiu.iu_req); if (o2info_to_user(oiu, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oiu.iu_req, req); - - return status; + return 0; } static int ocfs2_info_handle_fs_features(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_fs_features oif; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oif, req)) - goto bail; + return -EFAULT; oif.if_compat_features = osb->s_feature_compat; oif.if_incompat_features = osb->s_feature_incompat; @@ -284,39 +252,28 @@ static int ocfs2_info_handle_fs_features(struct inode *inode, o2info_set_request_filled(&oif.if_req); if (o2info_to_user(oif, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oif.if_req, req); - - return status; + return 0; } static int ocfs2_info_handle_journal_size(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_journal_size oij; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oij, req)) - goto bail; + return -EFAULT; oij.ij_journal_size = i_size_read(osb->journal->j_inode); o2info_set_request_filled(&oij.ij_req); if (o2info_to_user(oij, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oij.ij_req, req); - - return status; + return 0; } static int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, @@ -373,7 +330,7 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, u32 i; u64 blkno = -1; char namebuf[40]; - int status = -EFAULT, type = INODE_ALLOC_SYSTEM_INODE; + int status, type = INODE_ALLOC_SYSTEM_INODE; struct ocfs2_info_freeinode *oifi = NULL; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct inode *inode_alloc = NULL; @@ -385,8 +342,10 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, goto out_err; } - if (o2info_from_user(*oifi, req)) - goto bail; + if (o2info_from_user(*oifi, req)) { + status = -EFAULT; + goto out_free; + } oifi->ifi_slotnum = osb->max_slots; @@ -424,14 +383,16 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, o2info_set_request_filled(&oifi->ifi_req); - if (o2info_to_user(*oifi, req)) - goto bail; + if (o2info_to_user(*oifi, req)) { + status = -EFAULT; + goto out_free; + } status = 0; bail: if (status) o2info_set_request_error(&oifi->ifi_req, req); - +out_free: kfree(oifi); out_err: return status; @@ -658,7 +619,7 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, { u64 blkno = -1; char namebuf[40]; - int status = -EFAULT, type = GLOBAL_BITMAP_SYSTEM_INODE; + int status, type = GLOBAL_BITMAP_SYSTEM_INODE; struct ocfs2_info_freefrag *oiff; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); @@ -671,8 +632,10 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, goto out_err; } - if (o2info_from_user(*oiff, req)) - goto bail; + if (o2info_from_user(*oiff, req)) { + status = -EFAULT; + goto out_free; + } /* * chunksize from userspace should be power of 2. */ @@ -711,14 +674,14 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, if (o2info_to_user(*oiff, req)) { status = -EFAULT; - goto bail; + goto out_free; } status = 0; bail: if (status) o2info_set_request_error(&oiff->iff_req, req); - +out_free: kfree(oiff); out_err: return status; @@ -727,23 +690,17 @@ out_err: static int ocfs2_info_handle_unknown(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_request oir; if (o2info_from_user(oir, req)) - goto bail; + return -EFAULT; o2info_clear_request_filled(&oir); if (o2info_to_user(oir, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oir, req); - - return status; + return 0; } /* From c43c363def04cdaed0d9e26dae846081f55714e7 Mon Sep 17 00:00:00 2001 From: Junxiao Bi Date: Fri, 29 Aug 2014 15:19:00 -0700 Subject: [PATCH 256/272] ocfs2: o2net: don't shutdown connection when idle timeout This patch series is to fix a possible message lost bug in ocfs2 when network go bad. This bug will cause ocfs2 hung forever even network become good again. The messages may lost in this case. After the tcp connection is established between two nodes, an idle timer will be set to check its state periodically, if no messages are received during this time, idle timer will timeout, it will shutdown the connection and try to reconnect, so pending messages in tcp queues will be lost. This messages may be from dlm. Dlm may get hung in this case. This may cause the whole ocfs2 cluster hung. This is very possible to happen when network state goes bad. Do the reconnect is useless, it will fail if network state is still bad. Just waiting there for network recovering may be a good idea, it will not lost messages and some node will be fenced until cluster goes into split-brain state, for this case, Tcp user timeout is used to override the tcp retransmit timeout. It will timeout after 25 days, user should have notice this through the provided log and fix the network, if they don't, ocfs2 will fall back to original reconnect way. This patch (of 3): Some messages in the tcp queue maybe lost if we shutdown the connection and reconnect when idle timeout. If packets lost and reconnect success, then the ocfs2 cluster maybe hung. To fix this, we can leave the connection there and do the fence decision when idle timeout, if network recover before fence dicision is made, the connection survive without lost any messages. This bug can be saw when network state go bad. It may cause ocfs2 hung forever if some packets lost. With this fix, ocfs2 will recover from hung if network becomes good again. Signed-off-by: Junxiao Bi Reviewed-by: Srinivas Eeda Reviewed-by: Mark Fasheh Cc: Joel Becker Cc: Joseph Qi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/cluster/tcp.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 681691bc233a..2334bfc966c1 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1536,16 +1536,20 @@ static void o2net_idle_timer(unsigned long data) #endif printk(KERN_NOTICE "o2net: Connection to " SC_NODEF_FMT " has been " - "idle for %lu.%lu secs, shutting it down.\n", SC_NODEF_ARGS(sc), - msecs / 1000, msecs % 1000); + "idle for %lu.%lu secs.\n", + SC_NODEF_ARGS(sc), msecs / 1000, msecs % 1000); - /* - * Initialize the nn_timeout so that the next connection attempt - * will continue in o2net_start_connect. + /* idle timerout happen, don't shutdown the connection, but + * make fence decision. Maybe the connection can recover before + * the decision is made. */ atomic_set(&nn->nn_timeout, 1); + o2quo_conn_err(o2net_num_from_nn(nn)); + queue_delayed_work(o2net_wq, &nn->nn_still_up, + msecs_to_jiffies(O2NET_QUORUM_DELAY_MS)); + + o2net_sc_reset_idle_timer(sc); - o2net_sc_queue_work(sc, &sc->sc_shutdown_work); } static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc) @@ -1560,6 +1564,15 @@ static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc) static void o2net_sc_postpone_idle(struct o2net_sock_container *sc) { + struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num); + + /* clear fence decision since the connection recover from timeout*/ + if (atomic_read(&nn->nn_timeout)) { + o2quo_conn_up(o2net_num_from_nn(nn)); + cancel_delayed_work(&nn->nn_still_up); + atomic_set(&nn->nn_timeout, 0); + } + /* Only push out an existing timer */ if (timer_pending(&sc->sc_idle_timeout)) o2net_sc_reset_idle_timer(sc); From 8e9801dfe37c9e68cdbfcd15988df2187191864e Mon Sep 17 00:00:00 2001 From: Junxiao Bi Date: Fri, 29 Aug 2014 15:19:02 -0700 Subject: [PATCH 257/272] ocfs2: o2net: set tcp user timeout to max value When tcp retransmit timeout(15mins), the connection will be closed. Pending messages may be lost during this time. So we set tcp user timeout to override the retransmit timeout to the max value. This is OK for ocfs2 since we have disk heartbeat, if peer crash, the disk heartbeat will timeout and it will be evicted, if disk heartbeat not timeout and connection idle for a long time, then this means the cluster enters split-brain state, since fence can't happen, we'd better keep the connection and wait network recover. Signed-off-by: Junxiao Bi Reviewed-by: Srinivas Eeda Reviewed-by: Mark Fasheh Cc: Joel Becker Cc: Joseph Qi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/cluster/tcp.c | 20 ++++++++++++++++++++ fs/ocfs2/cluster/tcp.h | 1 + 2 files changed, 21 insertions(+) diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 2334bfc966c1..ea34952f9496 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1480,6 +1480,14 @@ static int o2net_set_nodelay(struct socket *sock) return ret; } +static int o2net_set_usertimeout(struct socket *sock) +{ + int user_timeout = O2NET_TCP_USER_TIMEOUT; + + return kernel_setsockopt(sock, SOL_TCP, TCP_USER_TIMEOUT, + (char *)&user_timeout, sizeof(user_timeout)); +} + static void o2net_initialize_handshake(void) { o2net_hand->o2hb_heartbeat_timeout_ms = cpu_to_be32( @@ -1663,6 +1671,12 @@ static void o2net_start_connect(struct work_struct *work) goto out; } + ret = o2net_set_usertimeout(sock); + if (ret) { + mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret); + goto out; + } + o2net_register_callbacks(sc->sc_sock->sk, sc); spin_lock(&nn->nn_lock); @@ -1844,6 +1858,12 @@ static int o2net_accept_one(struct socket *sock, int *more) goto out; } + ret = o2net_set_usertimeout(new_sock); + if (ret) { + mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret); + goto out; + } + slen = sizeof(sin); ret = new_sock->ops->getname(new_sock, (struct sockaddr *) &sin, &slen, 1); diff --git a/fs/ocfs2/cluster/tcp.h b/fs/ocfs2/cluster/tcp.h index 5bada2a69b50..c571e849fda4 100644 --- a/fs/ocfs2/cluster/tcp.h +++ b/fs/ocfs2/cluster/tcp.h @@ -63,6 +63,7 @@ typedef void (o2net_post_msg_handler_func)(int status, void *data, #define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000 #define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000 +#define O2NET_TCP_USER_TIMEOUT 0x7fffffff /* TODO: figure this out.... */ static inline int o2net_link_down(int err, struct socket *sock) From 8c7b638cece146234b0c0d5f6ba84d1cf6f81e83 Mon Sep 17 00:00:00 2001 From: Junxiao Bi Date: Fri, 29 Aug 2014 15:19:04 -0700 Subject: [PATCH 258/272] ocfs2: quorum: add a log for node not fenced For debug use, we can see from the log whether the fence decision is made and why it is not fenced. Signed-off-by: Junxiao Bi Reviewed-by: Srinivas Eeda Reviewed-by: Mark Fasheh Cc: Joel Becker Cc: Joseph Qi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/cluster/quorum.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c index 1ec141e758d7..62e8ec619b4c 100644 --- a/fs/ocfs2/cluster/quorum.c +++ b/fs/ocfs2/cluster/quorum.c @@ -160,9 +160,18 @@ static void o2quo_make_decision(struct work_struct *work) } out: - spin_unlock(&qs->qs_lock); - if (fence) + if (fence) { + spin_unlock(&qs->qs_lock); o2quo_fence_self(); + } else { + mlog(ML_NOTICE, "not fencing this node, heartbeating: %d, " + "connected: %d, lowest: %d (%sreachable)\n", + qs->qs_heartbeating, qs->qs_connected, lowest_hb, + lowest_reachable ? "" : "un"); + spin_unlock(&qs->qs_lock); + + } + } static void o2quo_set_hold(struct o2quo_state *qs, u8 node) From 498b473af9c20a4cb533297dc43b063f35f86349 Mon Sep 17 00:00:00 2001 From: Phong Tran Date: Fri, 29 Aug 2014 15:19:06 -0700 Subject: [PATCH 259/272] tools: selftests: fix build issue with make kselftests target Fix the typo of ARCH when running 'make kselftests'. Change the 'X86' to 'x86'. Test by compilation. Signed-off-by: Phong Tran Cc: David Herrmann Cc: Hugh Dickins Cc: Shuah Khan Cc: Sam Ravnborg Cc: Michal Marek Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- tools/testing/selftests/ipc/Makefile | 6 +++--- tools/testing/selftests/kcmp/Makefile | 6 +++--- tools/testing/selftests/memfd/Makefile | 10 +++++----- 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/ipc/Makefile b/tools/testing/selftests/ipc/Makefile index 5386fd7c43ae..74bbefdeaf4c 100644 --- a/tools/testing/selftests/ipc/Makefile +++ b/tools/testing/selftests/ipc/Makefile @@ -1,18 +1,18 @@ uname_M := $(shell uname -m 2>/dev/null || echo not) ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/) ifeq ($(ARCH),i386) - ARCH := X86 + ARCH := x86 CFLAGS := -DCONFIG_X86_32 -D__i386__ endif ifeq ($(ARCH),x86_64) - ARCH := X86 + ARCH := x86 CFLAGS := -DCONFIG_X86_64 -D__x86_64__ endif CFLAGS += -I../../../../usr/include/ all: -ifeq ($(ARCH),X86) +ifeq ($(ARCH),x86) gcc $(CFLAGS) msgque.c -o msgque_test else echo "Not an x86 target, can't build msgque selftest" diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile index d7d6bbeeff2f..8aabd82db9e4 100644 --- a/tools/testing/selftests/kcmp/Makefile +++ b/tools/testing/selftests/kcmp/Makefile @@ -1,11 +1,11 @@ uname_M := $(shell uname -m 2>/dev/null || echo not) ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/) ifeq ($(ARCH),i386) - ARCH := X86 + ARCH := x86 CFLAGS := -DCONFIG_X86_32 -D__i386__ endif ifeq ($(ARCH),x86_64) - ARCH := X86 + ARCH := x86 CFLAGS := -DCONFIG_X86_64 -D__x86_64__ endif @@ -15,7 +15,7 @@ CFLAGS += -I../../../../usr/include/ CFLAGS += -I../../../../arch/x86/include/ all: -ifeq ($(ARCH),X86) +ifeq ($(ARCH),x86) gcc $(CFLAGS) kcmp_test.c -o kcmp_test else echo "Not an x86 target, can't build kcmp selftest" diff --git a/tools/testing/selftests/memfd/Makefile b/tools/testing/selftests/memfd/Makefile index 6816c491c5ff..ad4ab01cd28f 100644 --- a/tools/testing/selftests/memfd/Makefile +++ b/tools/testing/selftests/memfd/Makefile @@ -1,10 +1,10 @@ uname_M := $(shell uname -m 2>/dev/null || echo not) ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/) ifeq ($(ARCH),i386) - ARCH := X86 + ARCH := x86 endif ifeq ($(ARCH),x86_64) - ARCH := X86 + ARCH := x86 endif CFLAGS += -D_FILE_OFFSET_BITS=64 @@ -14,20 +14,20 @@ CFLAGS += -I../../../../include/uapi/ CFLAGS += -I../../../../include/ all: -ifeq ($(ARCH),X86) +ifeq ($(ARCH),x86) gcc $(CFLAGS) memfd_test.c -o memfd_test else echo "Not an x86 target, can't build memfd selftest" endif run_tests: all -ifeq ($(ARCH),X86) +ifeq ($(ARCH),x86) gcc $(CFLAGS) memfd_test.c -o memfd_test endif @./memfd_test || echo "memfd_test: [FAIL]" build_fuse: -ifeq ($(ARCH),X86) +ifeq ($(ARCH),x86) gcc $(CFLAGS) fuse_mnt.c `pkg-config fuse --cflags --libs` -o fuse_mnt gcc $(CFLAGS) fuse_test.c -o fuse_test else From e3560305192cd51b3c07206c85eb4231594dd58b Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Fri, 29 Aug 2014 15:19:09 -0700 Subject: [PATCH 260/272] flush_icache_range: export symbol to fix build errors Fix building errors occuring due to a missing export of flush_icache_range() in kisskb.ellerman.id.au/kisskb/buildresult/11677809/ ERROR: "flush_icache_range" [drivers/misc/lkdtm.ko] undefined! Signed-off-by: Pranith Kumar Reported-by: Geert Uytterhoeven Acked-by: Vineet Gupta [arc] Acked-by: Richard Kuo [hexagon] Cc: Chris Metcalf Cc: Chris Zankel Acked-by: Max Filippov [xtensa] Cc: Noam Camus Cc: Masami Hiramatsu Acked-by: Zhigang Lu [tile] Cc: Kirill Tkhai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arc/mm/cache_arc700.c | 1 + arch/hexagon/mm/cache.c | 1 + arch/sh/mm/cache.c | 1 + arch/tile/kernel/smp.c | 1 + arch/xtensa/kernel/smp.c | 1 + 5 files changed, 5 insertions(+) diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c index 4670afc3b971..e88ddbf990e3 100644 --- a/arch/arc/mm/cache_arc700.c +++ b/arch/arc/mm/cache_arc700.c @@ -581,6 +581,7 @@ void flush_icache_range(unsigned long kstart, unsigned long kend) tot_sz -= sz; } } +EXPORT_SYMBOL(flush_icache_range); /* * General purpose helper to make I and D cache lines consistent. diff --git a/arch/hexagon/mm/cache.c b/arch/hexagon/mm/cache.c index fe14ccf28561..0c76c802e31c 100644 --- a/arch/hexagon/mm/cache.c +++ b/arch/hexagon/mm/cache.c @@ -68,6 +68,7 @@ void flush_icache_range(unsigned long start, unsigned long end) ); local_irq_restore(flags); } +EXPORT_SYMBOL(flush_icache_range); void hexagon_clean_dcache_range(unsigned long start, unsigned long end) { diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 097c2cdd117f..f770e3992620 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -229,6 +229,7 @@ void flush_icache_range(unsigned long start, unsigned long end) cacheop_on_each_cpu(local_flush_icache_range, (void *)&data, 1); } +EXPORT_SYMBOL(flush_icache_range); void flush_icache_page(struct vm_area_struct *vma, struct page *page) { diff --git a/arch/tile/kernel/smp.c b/arch/tile/kernel/smp.c index 01e8ab29f43a..19eaa62d456a 100644 --- a/arch/tile/kernel/smp.c +++ b/arch/tile/kernel/smp.c @@ -183,6 +183,7 @@ void flush_icache_range(unsigned long start, unsigned long end) preempt_enable(); } } +EXPORT_SYMBOL(flush_icache_range); /* Called when smp_send_reschedule() triggers IRQ_RESCHEDULE. */ diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c index 40b5a3771fb0..4d02e38514f5 100644 --- a/arch/xtensa/kernel/smp.c +++ b/arch/xtensa/kernel/smp.c @@ -571,6 +571,7 @@ void flush_icache_range(unsigned long start, unsigned long end) }; on_each_cpu(ipi_flush_icache_range, &fd, 1); } +EXPORT_SYMBOL(flush_icache_range); /* ------------------------------------------------------------------------- */ From 16b0371a2e2ba1a2dea84a18356b9bc7168a5b12 Mon Sep 17 00:00:00 2001 From: HuKeping Date: Fri, 29 Aug 2014 15:19:11 -0700 Subject: [PATCH 261/272] Documentation/kdump/kdump.txt: add ARM description Add arm specific parts to kdump kernel documentation. Signed-off-by: Hu Keping Acked-by: Vivek Goyal Cc: Haren Myneni Cc: Rob Landley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kdump/kdump.txt | 36 ++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt index 88d5a863712a..6c0b9f27e465 100644 --- a/Documentation/kdump/kdump.txt +++ b/Documentation/kdump/kdump.txt @@ -18,7 +18,7 @@ memory image to a dump file on the local disk, or across the network to a remote system. Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64, -and s390x architectures. +s390x and arm architectures. When the system kernel boots, it reserves a small section of memory for the dump-capture kernel. This ensures that ongoing Direct Memory Access @@ -112,7 +112,7 @@ There are two possible methods of using Kdump. 2) Or use the system kernel binary itself as dump-capture kernel and there is no need to build a separate dump-capture kernel. This is possible only with the architectures which support a relocatable kernel. As - of today, i386, x86_64, ppc64 and ia64 architectures support relocatable + of today, i386, x86_64, ppc64, ia64 and arm architectures support relocatable kernel. Building a relocatable kernel is advantageous from the point of view that @@ -241,6 +241,13 @@ Dump-capture kernel config options (Arch Dependent, ia64) kernel will be aligned to 64Mb, so if the start address is not then any space below the alignment point will be wasted. +Dump-capture kernel config options (Arch Dependent, arm) +---------------------------------------------------------- + +- To use a relocatable kernel, + Enable "AUTO_ZRELADDR" support under "Boot" options: + + AUTO_ZRELADDR=y Extended crashkernel syntax =========================== @@ -256,6 +263,10 @@ The syntax is: crashkernel=:[,:,...][@offset] range=start-[end] +Please note, on arm, the offset is required. + crashkernel=:[,:,...]@offset + range=start-[end] + 'start' is inclusive and 'end' is exclusive. For example: @@ -296,6 +307,12 @@ Boot into System Kernel on the memory consumption of the kdump system. In general this is not dependent on the memory size of the production system. + On arm, use "crashkernel=Y@X". Note that the start address of the kernel + will be aligned to 128MiB (0x08000000), so if the start address is not then + any space below the alignment point may be overwritten by the dump-capture kernel, + which means it is possible that the vmcore is not that precise as expected. + + Load the Dump-capture Kernel ============================ @@ -315,7 +332,8 @@ For ia64: - Use vmlinux or vmlinuz.gz For s390x: - Use image or bzImage - +For arm: + - Use zImage If you are using a uncompressed vmlinux image then use following command to load dump-capture kernel. @@ -331,6 +349,15 @@ to load dump-capture kernel. --initrd= \ --append="root= " +If you are using a compressed zImage, then use following command +to load dump-capture kernel. + + kexec --type zImage -p \ + --initrd= \ + --dtb= \ + --append="root= " + + Please note, that --args-linux does not need to be specified for ia64. It is planned to make this a no-op on that architecture, but for now it should be omitted @@ -347,6 +374,9 @@ For ppc64: For s390x: "1 maxcpus=1 cgroup_disable=memory" +For arm: + "1 maxcpus=1 reset_devices" + Notes on loading the dump-capture kernel: * By default, the ELF headers are stored in ELF64 format to support From b0108f9e93d0d39050eaa11358852f349bdccb71 Mon Sep 17 00:00:00 2001 From: Michael Welling Date: Fri, 29 Aug 2014 15:19:13 -0700 Subject: [PATCH 262/272] kexec: purgatory: add clean-up for purgatory directory Without this patch the kexec-purgatory.c and purgatory.ro files are not removed after make mrproper. Signed-off-by: Michael Welling Acked-by: Vivek Goyal Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index c96bcec544fc..60087ca37679 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -251,6 +251,7 @@ archclean: $(Q)rm -rf $(objtree)/arch/x86_64 $(Q)$(MAKE) $(clean)=$(boot) $(Q)$(MAKE) $(clean)=arch/x86/tools + $(Q)$(MAKE) $(clean)=arch/x86/purgatory PHONY += kvmconfig kvmconfig: From cdcd565fa0925edf9b80c875fcc84a231c75bd1d Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 7 Aug 2014 14:07:43 +0200 Subject: [PATCH 263/272] spi: sh-msiof: Fix transmit-only DMA transfers Fix tx/rx mixup, which broke transmit-only transfers. Introduced by commit 4240305f7cbdc7782aa8bc40cc702775d9ac0839 ("spi: sh-msiof: Fix leaking of unused DMA descriptors"). Reported-by: Laurent Pinchart Signed-off-by: Geert Uytterhoeven Acked-by: Laurent Pinchart Signed-off-by: Mark Brown --- drivers/spi/spi-sh-msiof.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 887c2084130f..543075b80f16 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -693,9 +693,9 @@ static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, reinit_completion(&p->done); /* Now start DMA */ - if (tx) - dma_async_issue_pending(p->master->dma_rx); if (rx) + dma_async_issue_pending(p->master->dma_rx); + if (tx) dma_async_issue_pending(p->master->dma_tx); ret = sh_msiof_spi_start(p, rx); From e160cc17688cc6f24211cbc2e2a6e872e08dd4d6 Mon Sep 17 00:00:00 2001 From: Alex Shi Date: Wed, 16 Jul 2014 19:21:56 +0800 Subject: [PATCH 264/272] vexpress/spc: fix a build warning on array bounds MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With ARCH_VEXPRESS_SPC option, kernel build has the following warning: arch/arm/mach-vexpress/spc.c: In function ‘ve_spc_clk_init’: arch/arm/mach-vexpress/spc.c:431:38: warning: array subscript is below array bounds [-Warray-bounds] struct ve_spc_opp *opps = info->opps[cluster]; ^ since 'cluster' maybe '-1' in UP system. This patch does a active checking to fix this issue. Signed-off-by: Alex Shi Acked-by: Pawel Moll Acked-by: Sudeep Holla Signed-off-by: Olof Johansson --- arch/arm/mach-vexpress/spc.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c index 2c2754e79cb3..f61158c6ce71 100644 --- a/arch/arm/mach-vexpress/spc.c +++ b/arch/arm/mach-vexpress/spc.c @@ -426,9 +426,15 @@ static int ve_spc_populate_opps(uint32_t cluster) static int ve_init_opp_table(struct device *cpu_dev) { - int cluster = topology_physical_package_id(cpu_dev->id); - int idx, ret = 0, max_opp = info->num_opps[cluster]; - struct ve_spc_opp *opps = info->opps[cluster]; + int cluster; + int idx, ret = 0, max_opp; + struct ve_spc_opp *opps; + + cluster = topology_physical_package_id(cpu_dev->id); + cluster = cluster < 0 ? 0 : cluster; + + max_opp = info->num_opps[cluster]; + opps = info->opps[cluster]; for (idx = 0; idx < max_opp; idx++, opps++) { ret = dev_pm_opp_add(cpu_dev, opps->freq * 1000, opps->u_volt); @@ -537,6 +543,8 @@ static struct clk *ve_spc_clk_register(struct device *cpu_dev) spc->hw.init = &init; spc->cluster = topology_physical_package_id(cpu_dev->id); + spc->cluster = spc->cluster < 0 ? 0 : spc->cluster; + init.name = dev_name(cpu_dev); init.ops = &clk_spc_ops; init.flags = CLK_IS_ROOT | CLK_GET_RATE_NOCACHE; From ca98565a6182a960cd857d7546267a0775154eb8 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 31 Aug 2014 11:14:26 -0700 Subject: [PATCH 265/272] unicore32: Fix build error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit unicore32 builds fail with arch/unicore32/kernel/signal.c: In function ‘setup_frame’: arch/unicore32/kernel/signal.c:257: error: ‘usig’ undeclared (first use in this function) arch/unicore32/kernel/signal.c:279: error: ‘usig’ undeclared (first use in this function) arch/unicore32/kernel/signal.c: In function ‘handle_signal’: arch/unicore32/kernel/signal.c:306: warning: unused variable ‘tsk’ arch/unicore32/kernel/signal.c: In function ‘do_signal’: arch/unicore32/kernel/signal.c:376: error: implicit declaration of function ‘get_signsl’ make[1]: *** [arch/unicore32/kernel/signal.o] Error 1 make: *** [arch/unicore32/kernel/signal.o] Error 2 Bisect points to commit 649671c90eaf ("unicore32: Use get_signal() signal_setup_done()"). This code never even compiled. Reverting the patch does not work, since previously used functions no longer exist, so try to fix it up. Compile tested only. Fixes: 649671c90eaf ("unicore32: Use get_signal() signal_setup_done()") Cc: Richard Weinberger Signed-off-by: Guenter Roeck Signed-off-by: Linus Torvalds --- arch/unicore32/kernel/signal.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c index 780d77388dec..7c8fb7018dc6 100644 --- a/arch/unicore32/kernel/signal.c +++ b/arch/unicore32/kernel/signal.c @@ -254,7 +254,8 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set, err |= setup_sigframe(frame, regs, set); if (err == 0) - err |= setup_return(regs, &ksig->ka, frame->retcode, frame, usig); + err |= setup_return(regs, &ksig->ka, frame->retcode, frame, + ksig->sig); return err; } @@ -276,7 +277,8 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, err |= __save_altstack(&frame->sig.uc.uc_stack, regs->UCreg_sp); err |= setup_sigframe(&frame->sig, regs, set); if (err == 0) - err |= setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig); + err |= setup_return(regs, &ksig->ka, frame->sig.retcode, frame, + ksig->sig); if (err == 0) { /* @@ -303,7 +305,6 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs, int syscall) { struct thread_info *thread = current_thread_info(); - struct task_struct *tsk = current; sigset_t *oldset = sigmask_to_save(); int usig = ksig->sig; int ret; @@ -373,7 +374,7 @@ static void do_signal(struct pt_regs *regs, int syscall) if (!user_mode(regs)) return; - if (get_signsl(&ksig)) { + if (get_signal(&ksig)) { handle_signal(&ksig, regs, syscall); return; } From 69e273c0b0a3c337a521d083374c918dc52c666f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 31 Aug 2014 18:23:04 -0700 Subject: [PATCH 266/272] Linux 3.17-rc3 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index f64fc7804a03..2893d7f0fecc 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 17 SUBLEVEL = 0 -EXTRAVERSION = -rc2 +EXTRAVERSION = -rc3 NAME = Shuffling Zombie Juror # *DOCUMENTATION* From 0738854939e6ec9b9111a8cfc0ca1dfa3cff6b2e Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 2 Sep 2014 23:02:59 +0800 Subject: [PATCH 267/272] blk-merge: fix blk_recount_segments QUEUE_FLAG_NO_SG_MERGE is set at default for blk-mq devices, so bio->bi_phys_segment computed may be bigger than queue_max_segments(q) for blk-mq devices, then drivers will fail to handle the case, for example, BUG_ON() in virtio_queue_rq() can be triggerd for virtio-blk: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1359146 This patch fixes the issue by ignoring the QUEUE_FLAG_NO_SG_MERGE flag if the computed bio->bi_phys_segment is bigger than queue_max_segments(q), and the regression is caused by commit 05f1dd53152173(block: add queue flag for disabling SG merging). Reported-by: Kick In Tested-by: Chris J Arges Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-merge.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index 54535831f1e1..77881798f793 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -10,10 +10,11 @@ #include "blk.h" static unsigned int __blk_recalc_rq_segments(struct request_queue *q, - struct bio *bio) + struct bio *bio, + bool no_sg_merge) { struct bio_vec bv, bvprv = { NULL }; - int cluster, high, highprv = 1, no_sg_merge; + int cluster, high, highprv = 1; unsigned int seg_size, nr_phys_segs; struct bio *fbio, *bbio; struct bvec_iter iter; @@ -35,7 +36,6 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, cluster = blk_queue_cluster(q); seg_size = 0; nr_phys_segs = 0; - no_sg_merge = test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags); high = 0; for_each_bio(bio) { bio_for_each_segment(bv, bio, iter) { @@ -88,18 +88,23 @@ new_segment: void blk_recalc_rq_segments(struct request *rq) { - rq->nr_phys_segments = __blk_recalc_rq_segments(rq->q, rq->bio); + bool no_sg_merge = !!test_bit(QUEUE_FLAG_NO_SG_MERGE, + &rq->q->queue_flags); + + rq->nr_phys_segments = __blk_recalc_rq_segments(rq->q, rq->bio, + no_sg_merge); } void blk_recount_segments(struct request_queue *q, struct bio *bio) { - if (test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags)) + if (test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags) && + bio->bi_vcnt < queue_max_segments(q)) bio->bi_phys_segments = bio->bi_vcnt; else { struct bio *nxt = bio->bi_next; bio->bi_next = NULL; - bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio); + bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio, false); bio->bi_next = nxt; } From dc501dc0d9dc9cbabc18b920f91a26c207e9476c Mon Sep 17 00:00:00 2001 From: Robert Elliott Date: Tue, 2 Sep 2014 11:38:49 -0500 Subject: [PATCH 268/272] blk-mq: pass along blk_mq_alloc_tag_set return values Two of the blk-mq based drivers do not pass back the return value from blk_mq_alloc_tag_set, instead just returning -ENOMEM. blk_mq_alloc_tag_set returns -EINVAL if the number of queues or queue depth is bad. -ENOMEM implies that retrying after freeing some memory might be more successful, but that won't ever change in the -EINVAL cases. Change the null_blk and mtip32xx drivers to pass along the return value. Signed-off-by: Robert Elliott Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 1 - drivers/block/null_blk.c | 29 +++++++++++++++++++++-------- 2 files changed, 21 insertions(+), 9 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index db1e9560d8a7..5c8e7fe07745 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3918,7 +3918,6 @@ skip_create_disk: if (rv) { dev_err(&dd->pdev->dev, "Unable to allocate request queue\n"); - rv = -ENOMEM; goto block_queue_alloc_init_error; } diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index a3b042c4d448..00d469c7f9f7 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -462,17 +462,21 @@ static int null_add_dev(void) struct gendisk *disk; struct nullb *nullb; sector_t size; + int rv; nullb = kzalloc_node(sizeof(*nullb), GFP_KERNEL, home_node); - if (!nullb) + if (!nullb) { + rv = -ENOMEM; goto out; + } spin_lock_init(&nullb->lock); if (queue_mode == NULL_Q_MQ && use_per_node_hctx) submit_queues = nr_online_nodes; - if (setup_queues(nullb)) + rv = setup_queues(nullb); + if (rv) goto out_free_nullb; if (queue_mode == NULL_Q_MQ) { @@ -484,22 +488,29 @@ static int null_add_dev(void) nullb->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; nullb->tag_set.driver_data = nullb; - if (blk_mq_alloc_tag_set(&nullb->tag_set)) + rv = blk_mq_alloc_tag_set(&nullb->tag_set); + if (rv) goto out_cleanup_queues; nullb->q = blk_mq_init_queue(&nullb->tag_set); - if (!nullb->q) + if (!nullb->q) { + rv = -ENOMEM; goto out_cleanup_tags; + } } else if (queue_mode == NULL_Q_BIO) { nullb->q = blk_alloc_queue_node(GFP_KERNEL, home_node); - if (!nullb->q) + if (!nullb->q) { + rv = -ENOMEM; goto out_cleanup_queues; + } blk_queue_make_request(nullb->q, null_queue_bio); init_driver_queues(nullb); } else { nullb->q = blk_init_queue_node(null_request_fn, &nullb->lock, home_node); - if (!nullb->q) + if (!nullb->q) { + rv = -ENOMEM; goto out_cleanup_queues; + } blk_queue_prep_rq(nullb->q, null_rq_prep_fn); blk_queue_softirq_done(nullb->q, null_softirq_done_fn); init_driver_queues(nullb); @@ -509,8 +520,10 @@ static int null_add_dev(void) queue_flag_set_unlocked(QUEUE_FLAG_NONROT, nullb->q); disk = nullb->disk = alloc_disk_node(1, home_node); - if (!disk) + if (!disk) { + rv = -ENOMEM; goto out_cleanup_blk_queue; + } mutex_lock(&lock); list_add_tail(&nullb->list, &nullb_list); @@ -544,7 +557,7 @@ out_cleanup_queues: out_free_nullb: kfree(nullb); out: - return -ENOMEM; + return rv; } static int __init null_init(void) From 5676e7b6db02b80eafc2e3ad316d5f2fee817ecb Mon Sep 17 00:00:00 2001 From: Robert Elliott Date: Tue, 2 Sep 2014 11:38:44 -0500 Subject: [PATCH 269/272] blk-mq: cleanup after blk_mq_init_rq_map failures In blk-mq.c blk_mq_alloc_tag_set, if: set->tags = kmalloc_node() succeeds, but one of the blk_mq_init_rq_map() calls fails, goto out_unwind; needs to free set->tags so the caller is not obligated to do so. None of the current callers (null_blk, virtio_blk, virtio_blk, or the forthcoming scsi-mq) do so. set->tags needs to be set to NULL after doing so, so other tag cleanup logic doesn't try to free a stale pointer later. Also set it to NULL in blk_mq_free_tag_set. Tested with error injection on the forthcoming scsi-mq + hpsa combination. Signed-off-by: Robert Elliott Signed-off-by: Jens Axboe --- block/blk-mq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index 4aac82615a46..f9b85e83d9ba 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1982,6 +1982,8 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) out_unwind: while (--i >= 0) blk_mq_free_rq_map(set, set->tags[i], i); + kfree(set->tags); + set->tags = NULL; out: return -ENOMEM; } @@ -1997,6 +1999,7 @@ void blk_mq_free_tag_set(struct blk_mq_tag_set *set) } kfree(set->tags); + set->tags = NULL; } EXPORT_SYMBOL(blk_mq_free_tag_set); From 2da78092dda13f1efd26edbbf99a567776913750 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 26 Aug 2014 09:05:36 -0600 Subject: [PATCH 270/272] block: Fix dev_t minor allocation lifetime Releases the dev_t minor when all references are closed to prevent another device from acquiring the same major/minor. Since the partition's release may be invoked from call_rcu's soft-irq context, the ext_dev_idr's mutex had to be replaced with a spinlock so as not so sleep. Signed-off-by: Keith Busch Cc: stable@kernel.org Signed-off-by: Jens Axboe --- block/genhd.c | 24 ++++++++++++++---------- block/partition-generic.c | 2 +- 2 files changed, 15 insertions(+), 11 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 791f41943132..09da5e4a8e03 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -28,10 +28,10 @@ struct kobject *block_depr; /* for extended dynamic devt allocation, currently only one major is used */ #define NR_EXT_DEVT (1 << MINORBITS) -/* For extended devt allocation. ext_devt_mutex prevents look up +/* For extended devt allocation. ext_devt_lock prevents look up * results from going away underneath its user. */ -static DEFINE_MUTEX(ext_devt_mutex); +static DEFINE_SPINLOCK(ext_devt_lock); static DEFINE_IDR(ext_devt_idr); static struct device_type disk_type; @@ -420,9 +420,13 @@ int blk_alloc_devt(struct hd_struct *part, dev_t *devt) } /* allocate ext devt */ - mutex_lock(&ext_devt_mutex); - idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_KERNEL); - mutex_unlock(&ext_devt_mutex); + idr_preload(GFP_KERNEL); + + spin_lock(&ext_devt_lock); + idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_NOWAIT); + spin_unlock(&ext_devt_lock); + + idr_preload_end(); if (idx < 0) return idx == -ENOSPC ? -EBUSY : idx; @@ -447,9 +451,9 @@ void blk_free_devt(dev_t devt) return; if (MAJOR(devt) == BLOCK_EXT_MAJOR) { - mutex_lock(&ext_devt_mutex); + spin_lock(&ext_devt_lock); idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt))); - mutex_unlock(&ext_devt_mutex); + spin_unlock(&ext_devt_lock); } } @@ -665,7 +669,6 @@ void del_gendisk(struct gendisk *disk) sysfs_remove_link(block_depr, dev_name(disk_to_dev(disk))); pm_runtime_set_memalloc_noio(disk_to_dev(disk), false); device_del(disk_to_dev(disk)); - blk_free_devt(disk_to_dev(disk)->devt); } EXPORT_SYMBOL(del_gendisk); @@ -690,13 +693,13 @@ struct gendisk *get_gendisk(dev_t devt, int *partno) } else { struct hd_struct *part; - mutex_lock(&ext_devt_mutex); + spin_lock(&ext_devt_lock); part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt))); if (part && get_disk(part_to_disk(part))) { *partno = part->partno; disk = part_to_disk(part); } - mutex_unlock(&ext_devt_mutex); + spin_unlock(&ext_devt_lock); } return disk; @@ -1098,6 +1101,7 @@ static void disk_release(struct device *dev) { struct gendisk *disk = dev_to_disk(dev); + blk_free_devt(dev->devt); disk_release_events(disk); kfree(disk->random); disk_replace_part_tbl(disk, NULL); diff --git a/block/partition-generic.c b/block/partition-generic.c index 789cdea05893..0d9e5f97f0a8 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -211,6 +211,7 @@ static const struct attribute_group *part_attr_groups[] = { static void part_release(struct device *dev) { struct hd_struct *p = dev_to_part(dev); + blk_free_devt(dev->devt); free_part_stats(p); free_part_info(p); kfree(p); @@ -253,7 +254,6 @@ void delete_partition(struct gendisk *disk, int partno) rcu_assign_pointer(ptbl->last_lookup, NULL); kobject_put(part->holder_dir); device_del(part_to_dev(part)); - blk_free_devt(part_devt(part)); hd_struct_put(part); } From df35c7c912fe668797681842b3b74c61b0664050 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 9 Sep 2014 11:50:58 -0400 Subject: [PATCH 271/272] Block: fix unbalanced bypass-disable in blk_register_queue When a queue is registered, the block layer turns off the bypass setting (because bypass is enabled when the queue is created). This doesn't work well for queues that are unregistered and then registered again; we get a WARNING because of the unbalanced calls to blk_queue_bypass_end(). This patch fixes the problem by making blk_register_queue() call blk_queue_bypass_end() only the first time the queue is registered. Signed-off-by: Alan Stern Acked-by: Tejun Heo CC: James Bottomley CC: Jens Axboe Signed-off-by: Jens Axboe --- block/blk-sysfs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 4db5abf96b9e..17f5c84ce7bf 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -554,8 +554,10 @@ int blk_register_queue(struct gendisk *disk) * Initialization must be complete by now. Finish the initial * bypass from queue allocation. */ - queue_flag_set_unlocked(QUEUE_FLAG_INIT_DONE, q); - blk_queue_bypass_end(q); + if (!blk_queue_init_done(q)) { + queue_flag_set_unlocked(QUEUE_FLAG_INIT_DONE, q); + blk_queue_bypass_end(q); + } ret = blk_trace_init_sysfs(dev); if (ret) From a516440542afcb9647f88d12c35640baf02d07ea Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 10 Sep 2014 09:02:03 -0600 Subject: [PATCH 272/272] blk-mq: scale depth and rq map appropriate if low on memory If we are running in a kdump environment, resources are scarce. For some SCSI setups with a huge set of shared tags, we run out of memory allocating what the drivers is asking for. So implement a scale back logic to reduce the tag depth for those cases, allowing the driver to successfully load. We should extend this to detect low memory situations, and implement a sane fallback for those (1 queue, 64 tags, or something like that). Tested-by: Robert Elliott Signed-off-by: Jens Axboe --- block/blk-mq.c | 88 +++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 69 insertions(+), 19 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index f9b85e83d9ba..383ea0cb1f0a 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1321,6 +1321,7 @@ static void blk_mq_free_rq_map(struct blk_mq_tag_set *set, continue; set->ops->exit_request(set->driver_data, tags->rqs[i], hctx_idx, i); + tags->rqs[i] = NULL; } } @@ -1354,8 +1355,9 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, INIT_LIST_HEAD(&tags->page_list); - tags->rqs = kmalloc_node(set->queue_depth * sizeof(struct request *), - GFP_KERNEL, set->numa_node); + tags->rqs = kzalloc_node(set->queue_depth * sizeof(struct request *), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY, + set->numa_node); if (!tags->rqs) { blk_mq_free_tags(tags); return NULL; @@ -1379,8 +1381,9 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, this_order--; do { - page = alloc_pages_node(set->numa_node, GFP_KERNEL, - this_order); + page = alloc_pages_node(set->numa_node, + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY, + this_order); if (page) break; if (!this_order--) @@ -1404,8 +1407,10 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, if (set->ops->init_request) { if (set->ops->init_request(set->driver_data, tags->rqs[i], hctx_idx, i, - set->numa_node)) + set->numa_node)) { + tags->rqs[i] = NULL; goto fail; + } } p += rq_size; @@ -1416,7 +1421,6 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set, return tags; fail: - pr_warn("%s: failed to allocate requests\n", __func__); blk_mq_free_rq_map(set, tags, hctx_idx); return NULL; } @@ -1936,6 +1940,61 @@ static int blk_mq_queue_reinit_notify(struct notifier_block *nb, return NOTIFY_OK; } +static int __blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set) +{ + int i; + + for (i = 0; i < set->nr_hw_queues; i++) { + set->tags[i] = blk_mq_init_rq_map(set, i); + if (!set->tags[i]) + goto out_unwind; + } + + return 0; + +out_unwind: + while (--i >= 0) + blk_mq_free_rq_map(set, set->tags[i], i); + + set->tags = NULL; + return -ENOMEM; +} + +/* + * Allocate the request maps associated with this tag_set. Note that this + * may reduce the depth asked for, if memory is tight. set->queue_depth + * will be updated to reflect the allocated depth. + */ +static int blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set) +{ + unsigned int depth; + int err; + + depth = set->queue_depth; + do { + err = __blk_mq_alloc_rq_maps(set); + if (!err) + break; + + set->queue_depth >>= 1; + if (set->queue_depth < set->reserved_tags + BLK_MQ_TAG_MIN) { + err = -ENOMEM; + break; + } + } while (set->queue_depth); + + if (!set->queue_depth || err) { + pr_err("blk-mq: failed to allocate request map\n"); + return -ENOMEM; + } + + if (depth != set->queue_depth) + pr_info("blk-mq: reduced tag depth (%u -> %u)\n", + depth, set->queue_depth); + + return 0; +} + /* * Alloc a tag set to be associated with one or more request queues. * May fail with EINVAL for various error conditions. May adjust the @@ -1944,8 +2003,6 @@ static int blk_mq_queue_reinit_notify(struct notifier_block *nb, */ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) { - int i; - if (!set->nr_hw_queues) return -EINVAL; if (!set->queue_depth) @@ -1966,25 +2023,18 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) sizeof(struct blk_mq_tags *), GFP_KERNEL, set->numa_node); if (!set->tags) - goto out; + return -ENOMEM; - for (i = 0; i < set->nr_hw_queues; i++) { - set->tags[i] = blk_mq_init_rq_map(set, i); - if (!set->tags[i]) - goto out_unwind; - } + if (blk_mq_alloc_rq_maps(set)) + goto enomem; mutex_init(&set->tag_list_lock); INIT_LIST_HEAD(&set->tag_list); return 0; - -out_unwind: - while (--i >= 0) - blk_mq_free_rq_map(set, set->tags[i], i); +enomem: kfree(set->tags); set->tags = NULL; -out: return -ENOMEM; } EXPORT_SYMBOL(blk_mq_alloc_tag_set);