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Author SHA1 Message Date
Linus Torvalds 6fb805fb10 nios2 fixes for v4.0-final
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Merge tag 'nios2-fixes-v4.0-final' of git://git.rocketboards.org/linux-socfpga-next

Pull arch/nios2 fixes from Ley Foon Tan:
 "There are 3 arch/nios2 fixes for 4.0 final:

   - fix cache coherency issue when debugging with gdb

   - move restart_block to struct task_struct (aligned with other
     architectures)

   - fix for missing registers defines for ptrace"

* tag 'nios2-fixes-v4.0-final' of git://git.rocketboards.org/linux-socfpga-next:
  nios2: fix cache coherency issue when debug with gdb
  nios2: add missing ptrace registers defines
  nios2: signal: Move restart_block to struct task_struct
2015-04-10 10:51:34 -07:00
Markus Pargmann c0cf5a59fb regulator: max8660: Handle empty regulator data
It is not necessary to have regulator init data for a regulator. This
patch removes the necessity of this data and handles a NULL pointer
properly.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 18:17:53 +01:00
Jiri Kosina 8fec02a73e HID: debug: fix error handling in hid_debug_events_read()
In the unlikely case of hdev vanishing while hid_debug_events_read() was
sleeping, we can't really break out of the case switch as with other cases,
as on the way out we'll try to remove ourselves from the hdev waitqueue.

Fix this by taking a shortcut exit path and avoiding cleanup that doesn't
make sense in case hdev doesn't exist any more anyway.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-04-10 17:32:21 +02:00
Heiko Stübner 23296099e7 regulator: output current-limit for all regulators in summary
Voltage regulators can have (unregulated) current limits too, so we should
probably output both voltage and current for all regulators.

Holding the rdev->mutex actually conflicts with _regulator_get_current_limit
but also is not really necessary, as the global regulator_list_mutex already
protects us from the regulator vanishing while we go through the list.

On the rk3288-firefly the summary now looks like:

 regulator                      use open bypass voltage current     min     max
-------------------------------------------------------------------------------
 vcc_sys                          0   12      0  5000mV     0mA  5000mV  5000mV
    vcc_lan                       1    1      0  3300mV     0mA  3300mV  3300mV
       ff290000.ethernet                                            0mV     0mV
    vcca_33                       0    0      0  3300mV     0mA  3300mV  3300mV
    vcca_18                       0    0      0  1800mV     0mA  1800mV  1800mV
    vdd10_lcd                     0    0      0  1000mV     0mA  1000mV  1000mV
 [...]

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 15:46:32 +01:00
Heiko Stübner 7c225ec90c regulator: add a summary tree in debugfs
On modern systems the regulator hierarchy can get quite long and nested
with regulators supplying other regulators. In some cases when debugging
it might be nice to get a tree of these regulators, their consumers
and the regulation constraints in one go.

To achieve this add a regulator_summary sysfs node, similar to
clk_summary in the common clock framework, that walks the regulator
list and creates a tree out of the regulators, their consumers and
core per-regulator settings.

On a rk3288-firefly the regulator_summary would for example look
something like:

 regulator                      use open bypass   value     min     max
-----------------------------------------------------------------------
 vcc_sys                          0   12      0  5000mV  5000mV  5000mV
    vcc_lan                       1    1      0  3300mV  3300mV  3300mV
       ff290000.ethernet                                    0mV     0mV
    vcca_33                       0    0      0  3300mV  3300mV  3300mV
    vcca_18                       0    0      0  1800mV  1800mV  1800mV
    vdd10_lcd                     0    0      0  1000mV  1000mV  1000mV
    vccio_sd                      0    0      0  3300mV  3300mV  3300mV
    vcc_20                        0    3      0  2000mV  2000mV  2000mV
       vcc18_lcd                  0    0      0  1800mV  1800mV  1800mV
       vcc_18                     0    2      0  1800mV  1800mV  1800mV
          ff100000.saradc                                   0mV     0mV
          ff0d0000.dwmmc                                 1650mV  1950mV
       vdd_10                     0    0      0  1000mV  1000mV  1000mV
    vdd_log                       0    0      0  1100mV  1100mV  1100mV
    vcc_io                        0    3      0  3300mV  3300mV  3300mV
       ff0f0000.dwmmc                                    3300mV  3400mV
       vcc_flash                  1    1      0  1800mV  1800mV  1800mV
          ff0f0000.dwmmc                                 1700mV  1950mV
       vcc_sd                     1    1      0  3300mV  3300mV  3300mV
          ff0c0000.dwmmc                                 3300mV  3400mV
    vcc_ddr                       0    0      0  1200mV  1200mV  1200mV
    vdd_gpu                       0    0      0  1000mV   850mV  1350mV
    vdd_cpu                       0    1      0   900mV   850mV  1350mV
       cpu0                                               900mV   900mV
    vcc_5v                        0    2      0  5000mV  5000mV  5000mV
       vcc_otg_5v                 0    0      0  5000mV  5000mV  5000mV
       vcc_host_5v                0    0      0  5000mV  5000mV  5000mV
 regulator-dummy                  0    0      0     0mV     0mV     0mV

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 15:46:28 +01:00
Radim Krčmář ca3f087472 KVM: use slowpath for cross page cached accesses
kvm_write_guest_cached() does not mark all written pages as dirty and
code comments in kvm_gfn_to_hva_cache_init() talk about NULL memslot
with cross page accesses.  Fix all the easy way.

The check is '<= 1' to have the same result for 'len = 0' cache anywhere
in the page.  (nr_pages_needed is 0 on page boundary.)

Fixes: 8f964525a1 ("KVM: Allow cross page reads and writes from cached translations.")
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Message-Id: <20150408121648.GA3519@potion.brq.redhat.com>
Reviewed-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-04-10 16:04:45 +02:00
Bjorn Helgaas 5468d5a64b Merge branch 'pci/misc' into next
* pci/misc:
  PCI: Read capability list as dwords, not bytes
  PCI: Don't clear ASPM bits when the FADT declares it's unsupported
  PCI: Clarify policy for vendor IDs in pci.txt
  PCI/ACPI: Optimize device state transition delays
  PCI: Export pci_find_host_bridge() for use inside PCI core
  PCI: Make a shareable UUID for PCI firmware ACPI _DSM
  PCI: Fix typo in Thunderbolt kernel message
2015-04-10 08:27:18 -05:00
Bjorn Helgaas 4dd1f57956 Merge branches 'pci/host-exynos', 'pci/host-iproc', 'pci/host-keystone', 'pci/host-layerscape', 'pci/host-mvebu', 'pci/host-rcar' and 'pci/host-versatile' into next
* pci/host-exynos:
  PCI: exynos: Fix INTx enablement statement termination error

* pci/host-iproc:
  PCI: iproc: Add Broadcom iProc PCIe support
  PCI: iproc: Add DT docs for Broadcom iProc PCIe driver
  PCI: Export symbols required for loadable host driver modules

* pci/host-keystone:
  PCI: keystone: Don't dereference possible NULL pointer

* pci/host-layerscape:
  PCI: layerscape: Simplify platform_get_resource_byname() failure checking

* pci/host-mvebu:
  PCI: mvebu: Add suspend/resume support

* pci/host-rcar:
  PCI: rcar: Verify that mem_res is 64K-aligned
  PCI: rcar: Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR
  PCI: rcar: Write zeroes to reserved PCIEPARL bits
  PCI: rcar: Fix position of MSI enable bit

* pci/host-versatile:
  PCI: versatile: Check for devm_ioremap_resource() failures
2015-04-10 08:26:54 -05:00
Chase Metzger 00fe52deb4 drivers/usb/core: devio.c: Removed an uneeded space before tab
Ran checkpatch.pl on file and removed a warning about an unwanted space before
a tab.

Signed-off-by: Chase Metzger <chasemetzger15@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-10 14:00:22 +02:00
Gregory Herrero 42a6630a87 usb: dwc2: host: sleep USB_RESUME_TIMEOUT during resume
msleep(USB_RESUME_TIMEOUT) must be done when the controller drives
the resume. This is true after HPRT0_RES is written.
Moreover, restore the delay after controller power is up.

Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-10 13:52:49 +02:00
Greg Kroah-Hartman b9cd825d06 Two Chipidea updates
- Forbid dumpping registers when the controller in low power mode
 - dp pullup needs to be controlled by fsm when working at otg
 fsm mode
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Merge tag 'usb-ci-v4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

Peter writes:

Two Chipidea updates

- Forbid dumpping registers when the controller in low power mode
- dp pullup needs to be controlled by fsm when working at otg
fsm mode
2015-04-10 13:51:20 +02:00
Greg Kroah-Hartman 2aebe3f3b2 New Features
============
 *) Add driver for USB PHYs on sun9i
 *) Add driver for USB PHY on dm816x
 *) Modified exynos5-usbdrd driver to add support for Exynos5433 SoC
 
 Fixes
 =====
 *) Fix power_on/power_off failure paths in some drivers
 *) Make miphy365x use generic PHY type constants
 *) Fix build errors due to missing export symbols in qcom-ufs driver
 *) Make all the functions return proper error values
 
 Cleanups
 ========
 *) use PTR_ERR_OR_ZERO to simplify code
 *) use devm_kcalloc instead of devm_kzalloc with multiply
 *) remove un-necessary ifdef CONFIG_OF
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Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

New Features
============
*) Add driver for USB PHYs on sun9i
*) Add driver for USB PHY on dm816x
*) Modified exynos5-usbdrd driver to add support for Exynos5433 SoC

Fixes
=====
*) Fix power_on/power_off failure paths in some drivers
*) Make miphy365x use generic PHY type constants
*) Fix build errors due to missing export symbols in qcom-ufs driver
*) Make all the functions return proper error values

Cleanups
========
*) use PTR_ERR_OR_ZERO to simplify code
*) use devm_kcalloc instead of devm_kzalloc with multiply
*) remove un-necessary ifdef CONFIG_OF
2015-04-10 13:47:50 +02:00
Greg Kroah-Hartman c8d1bc12c7 usb: generic resume timeout for v4.1
This part 2 pull request contains only the patches
 which make sure everybody on linux uses the same
 resume timeout value.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v4.1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing

Felipe writes:

usb: generic resume timeout for v4.1

This part 2 pull request contains only the patches
which make sure everybody on linux uses the same
resume timeout value.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-10 13:45:27 +02:00
Peter Griffin 69f0fb2a59 mmc: sdhci-st: Update ST SDHCI binding documentation.
This patch updates the binding information to reflect the
extra dt options which are now supported by the sdhci-st.c
driver which enable support for stih407 family silicon.

STiH410 SoC and later support UHS modes for eMMC, so the
driver now makes use of these common bindings. Examples
are provided for both eMMC (which has additional bindings)
and also sd slot for STiH407.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:40 +02:00
Peter Griffin 4e187d3154 mmc: sdhci-st: Update the quirks for this controller.
Some additional quirks need to be enabled now we support UHS
modes. This avoids some spurious warnings like

"Got data interrupt 0x00000002 even though no data operation was in progress"

Testing on stih410-b2120 board achieves the following speeds
with HS200 eMMC card.

max-frequency = 200Mhz
/dev/mmcblk0p1:
 Timing buffered disk reads: 270 MB in  3.02 seconds =  89.54 MB/sec

max-frequency = 100Mhz
root@debian-armhf:~# hdparm -t /dev/mmcblk0p1
/dev/mmcblk0p1:
 Timing buffered disk reads: 210 MB in  3.00 seconds =  70.00 MB/sec

max-frequency = 50Mhz
root@debian-armhf:~# hdparm -t /dev/mmcblk0p1
/dev/mmcblk0p1:
 Timing buffered disk reads: 118 MB in  3.00 seconds =  39.28 MB/sec

This is better than the 3.10 kernel which achieves 77.59 MB/sec
at 200Mhz clock (same board/soc/eMMC).

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:40 +02:00
Peter Griffin cf48d32efb mmc: sdhci-st: Add sdhci_st_set_uhs_signaling function.
To allow UHS modes to work properly we need to provide the st specific
set_uhs_signaling callback function. This function differs from the
generic sdhci_set_uhs_signaling callback in that we need to configure
the correct delay depending on the UHS mode, and also set the V18_EN
bit.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:40 +02:00
Peter Griffin 2053812f6e mmc: sdhci-st: Add st_mmcss_cconfig function to configure mmcss glue registers.
STiH407 family SoC's have glue registers in the flashSS subsystem which
are used to configure the Arasan HC. This patch configures these glue
registers according to what has been specified in the DT.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:40 +02:00
Peter Griffin bfa448041f mmc: sdhci-st: Add delay management functions for top registers (eMMC).
Due to the tight timing constraints in some UHS modes, it is required to have
some delay management in the design. Two types of delay management are supported
in the HW: -

1) Static delay management
2) Dynamic delay management

NB: The delay management is only there when eMMC interface is selected.

1: Static delay management: is used to provide PVT dependent static delay on the
clock/data lines to manage setup/hold requirements of the interface. The maximum
delay possible is 3.25ns. These delays are PVT dependent, and thus delay values
applied are not accurate and vary across provcess voltage and temperature range.
Due to this these delays must not be used on the very time critical paths.

2. Dynamic delay locked loop (DLL): is used to provide dynamic delay management.
The advantage of DLL is that it provides accurate & PVT indepedent delay.

The DLL is used to provide delay on the loopback clock on "Read Path" to capture
read data reliably. On TX path the clock on which output data is transmitted is
delayed, resulting in delay of TX data.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:40 +02:00
Peter Griffin 406c24310a mmc: sdhci-st: Add support for de-asserting reset signal and top regs resource
STiH407 family SoC's can have a reset signal for the controller which needs to
be managed. Also the eMMC controller has some additional 'top' memory mapped
registers which are used to manage the dynamic and static delay required for
UHS modes. This patch adds support for creating the mapping, which will be used
by subsequent patches.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:39 +02:00
Peter Griffin 8bef7178a6 mmc: sdhci-st: Add macros for register offsets and bitfields for mmcss glue regs
The stih407 family SoC's have additional glue registers in the flashSS which
are used to configure the Arasan controller.

This patch adds macros for the register offsets and bitfields which will be
used by subsequent patches to support stih407 family SoC's.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-04-10 12:55:39 +02:00
Mike Travis 1912c7afa3 x86/apic/uv: Update the UV APIC HUB check
Update the check for UV2000/3000.  Note when the HUB is not recognized.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182629.267239403@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-10 10:16:08 +02:00
Mike Travis 379b97e280 x86/apic/uv: Update the UV APIC driver check
Fix a bug in the OEM check function that determines if the
system is a UV system and the BIOS is compatible with the
kernel's UV apic driver.  This prevents some possibly obscure
panics and guards the system against being started on SGI
hardware that does not have the required kernel support.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182629.112998930@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-10 10:16:07 +02:00
Mike Travis 7a4e017041 x86/apic/uv: Update the APIC UV OEM check
Optimize the first "SGI" OEM check to return faster if the
system is not an SGI or UV system.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182628.952357922@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-10 10:16:07 +02:00
NeilBrown 47d68979cc md/raid0: fix bug with chunksize not a power of 2.
Since commit 20d0189b10
in v3.14-rc1 RAID0 has performed incorrect calculations
when the chunksize is not a power of 2.

This happens because "sector_div()" modifies its first argument, but
this wasn't taken into account in the patch.

So restore that first arg before re-using the variable.

Reported-by: Joe Landman <joe.landman@gmail.com>
Reported-by: Dave Chinner <david@fromorbit.com>
Fixes: 20d0189b10
Cc: stable@vger.kernel.org (3.14 and later).
Signed-off-by: NeilBrown <neilb@suse.de>
2015-04-10 15:36:31 +10:00
Ley Foon Tan 4a89c3088f nios2: fix cache coherency issue when debug with gdb
Remove the end address checking for flushda function. We need to flush
each address line for flushda instruction, from start to end address.
This is because flushda instruction only flush the cache if tag and line
fields are matched.

Change to use ldwio instruction (bypass cache) to load the instruction
that causing trap. Our interest is the actual instruction that executed
by the processor, this should be uncached.
Note, EA address might be an userspace cached address.


Signed-off-by: Ley Foon Tan <lftan@altera.com>
2015-04-10 11:10:08 +08:00
Linus Torvalds e5e02de066 Power management and ACPI fixes for v4.0-rc8
- Revert a 3.17 hibernate commit that was supposed to fix an issue
    related to e820 reserved regions, but broke resume from hibernation
    on Lenovo x230 (Rafael J Wysocki).
 
  - Prevent the ACPI cpuidle driver from overwriting the name and
    description of the C0 state set by the core when the list of
    C-states changes (Thomas Schlichter).
 
  - Remove the no longer needed state_count field from struct cpuidle_device
    which prevents the list of C-states shown by the sysfs interface from
    becoming incorrect when the current number of them is different from
    the number of C-states on boot (Bartlomiej Zolnierkiewicz).
 
  - The cpufreq core updates the policy object of the only online CPU
    during system resume to make it reflect the current hardware state,
    but it always assumes that CPU to be CPU0 which need not be the
    case, so fix the code to avoid that assumption (Viresh Kumar).
 
 /
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Merge tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are stable-candidate fixes of some recently reported issues in
  the cpufreq core, cpuidle core, the ACPI cpuidle driver and the
  hibernate core.

  Specifics:

   - Revert a 3.17 hibernate commit that was supposed to fix an issue
     related to e820 reserved regions, but broke resume from hibernation
     on Lenovo x230 (Rafael J Wysocki).

   - Prevent the ACPI cpuidle driver from overwriting the name and
     description of the C0 state set by the core when the list of
     C-states changes (Thomas Schlichter).

   - Remove the no longer needed state_count field from struct
     cpuidle_device which prevents the list of C-states shown by the
     sysfs interface from becoming incorrect when the current number of
     them is different from the number of C-states on boot (Bartlomiej
     Zolnierkiewicz).

   - The cpufreq core updates the policy object of the only online CPU
     during system resume to make it reflect the current hardware state,
     but it always assumes that CPU to be CPU0 which need not be the
     case, so fix the code to avoid that assumption (Viresh Kumar)"

* tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"
  cpuidle: ACPI: do not overwrite name and description of C0
  cpuidle: remove state_count field from struct cpuidle_device
  cpufreq: Schedule work for the first-online CPU on resume
2015-04-09 17:44:27 -07:00
Sean O. Stalley 55db3208f2 PCI: Read capability list as dwords, not bytes
Reading both the capability ID and "next" pointer at the same time lets us
parse the list with half the number of config reads.

Signed-off-by: Sean O. Stalley <sean.stalley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 17:01:39 -05:00
Rafael J. Wysocki b2d5fb97d3 Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-cpuidle'
* pm-sleep:
  Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"

* pm-cpufreq:
  cpufreq: Schedule work for the first-online CPU on resume

* pm-cpuidle:
  cpuidle: ACPI: do not overwrite name and description of C0
  cpuidle: remove state_count field from struct cpuidle_device
2015-04-09 23:25:23 +02:00
Bjorn Helgaas e3dc17a53f PCI: layerscape: Simplify platform_get_resource_byname() failure checking
devm_ioremap_resource() validates the resource it receives, so if we check
for devm_ioremap_resource() failure, we need not check for failure of the
preceding platform_get_resource().

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 14:36:52 -05:00
Bjorn Helgaas f76ea574d6 PCI: keystone: Don't dereference possible NULL pointer
Check for failure from platform_get_resource() (this check actually happens
inside devm_ioremap_resource()) before dereferencing the pointer returned
from platform_get_resource().

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 14:34:10 -05:00
Jisheng Zhang 873581698d PCI: versatile: Check for devm_ioremap_resource() failures
Check for failure of devm_ioremap_resource().

devm_ioremap_resource() validates the resource it receives, so if we check
for devm_ioremap_resource() failure, we need not check for failure of the
preceding platform_get_resource().

[bhelgaas: changelog]
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 14:27:06 -05:00
Matthew Garrett 387d37577f PCI: Don't clear ASPM bits when the FADT declares it's unsupported
Communications with a hardware vendor confirm that the expected behaviour
on systems that set the FADT ASPM disable bit but which still grant full
PCIe control is for the OS to leave any BIOS configuration intact and
refuse to touch the ASPM bits.  This mimics the behaviour of Windows.

Signed-off-by: Matthew Garrett <mjg59@coreos.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 14:20:11 -05:00
Michael S. Tsirkin 37a9c502c0 PCI: Clarify policy for vendor IDs in pci.txt
Clarify pci.txt so it matches the "do not add new entries unless they are
shared between multiple drivers" comment in include/linux/pci_ids.h.

[bhelgaas: changelog, strengthen language]
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-04-09 13:34:02 -05:00
Linus Torvalds 3cfb2f7976 PCI updates for v4.0:
Enumeration
     - Don't look for ACPI hotplug parameters if ACPI is disabled (Bjorn Helgaas)
 
   Resource management
     - Revert "sparc/PCI: Clip bridge windows to fit in upstream windows" (Bjorn Helgaas)
 
   AER
     - Avoid info leak in __print_tlp_header() (Rasmus Villemoes)
 
   PCI device hotplug
     - Add missing curly braces in cpci_configure_slot() (Dan Carpenter)
 
   ST Microelectronics SPEAr13xx host bridge driver
     - Drop __initdata from spear13xx_pcie_driver (Matwey V. Kornilov)
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Merge tag 'pci-v4.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Here are some fixes for v4.0.  I apologize for how late they are.  We
  were hoping for some better fixes, but couldn't get them polished in
  time.  These fix:

   - a Xen domU oops with PCI passthrough devices
   - a sparc T5 boot failure
   - a STM SPEAr13xx crash (use after initdata freed)
   - a cpcihp hotplug driver thinko
   - an AER thinko that printed stack junk

  Details:

  Enumeration
    - Don't look for ACPI hotplug parameters if ACPI is disabled (Bjorn Helgaas)

  Resource management
    - Revert "sparc/PCI: Clip bridge windows to fit in upstream windows" (Bjorn Helgaas)

  AER
    - Avoid info leak in __print_tlp_header() (Rasmus Villemoes)

  PCI device hotplug
    - Add missing curly braces in cpci_configure_slot() (Dan Carpenter)

  ST Microelectronics SPEAr13xx host bridge driver
    - Drop __initdata from spear13xx_pcie_driver (Matwey V. Kornilov)

* tag 'pci-v4.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "sparc/PCI: Clip bridge windows to fit in upstream windows"
  PCI: Don't look for ACPI hotplug parameters if ACPI is disabled
  PCI: cpcihp: Add missing curly braces in cpci_configure_slot()
  PCI/AER: Avoid info leak in __print_tlp_header()
  PCI: spear: Drop __initdata from spear13xx_pcie_driver
2015-04-09 10:17:44 -07:00
Dmitry M. Fedin 3dc8523fa7 ALSA: usb - Creative USB X-Fi Pro SB1095 volume knob support
Adds an entry for Creative USB X-Fi to the rc_config array in
mixer_quirks.c to allow use of volume knob on the device.
Adds support for newer X-Fi Pro card, known as "Model No. SB1095"
with USB ID "041e:3237"

Signed-off-by: Dmitry M. Fedin <dmitry.fedin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-09 17:20:39 +02:00
Guenter Roeck f83a9cb622 hwmon: (it87) Use feature macros on sio_data
Feature macros work on sio_data as well, so use them there.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-09 06:39:11 -07:00
Al Viro 64b4e2526d ocfs2: _really_ sync the right range
"ocfs2 syncs the wrong range" had been broken; prior to it the
code was doing the wrong thing in case of O_APPEND, all right,
but _after_ it we were syncing the wrong range in 100% cases.
*ppos, aka iocb->ki_pos is incremented prior to that point,
so we are always doing sync on the area _after_ the one we'd
written to.

Spotted by Joseph Qi <joseph.qi@huawei.com> back in January;
unfortunately, I'd missed his mail back then ;-/

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-09 07:18:48 -04:00
Ley Foon Tan e3e29f990c nios2: add missing ptrace registers defines
These are all register available in nios2.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
2015-04-09 18:28:05 +08:00
Aravind Gopalakrishnan b44915927c x86/iommu: Fix header comments regarding standard and _FINISH macros
The comment line regarding IOMMU_INIT and IOMMU_INIT_FINISH
macros is incorrect:

  "The standard vs the _FINISH differs in that the _FINISH variant
  will continue detecting other IOMMUs in the call list..."

It should be "..the *standard* variant will continue
detecting..."

Fix that. Also, make it readable while at it.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: konrad.wilk@oracle.com
Fixes: 6e96366933 ("x86, iommu: Update header comments with appropriate naming")
Link: http://lkml.kernel.org/r/1428508017-5316-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:56:31 +02:00
Denys Vlasenko a37f34a325 x86/asm/entry/64: Reduce padding in execve stubs
execve stubs are 7 bytes only. Padding them to 16 bytes is a
waste.

   text	   data	    bss	    dec	    hex	filename
  12594	      0	      0	  12594	   3132	entry_64.o.before
  12530	      0	      0	  12530	   30f2	entry_64.o

Run-tested.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-8-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:26 +02:00
Denys Vlasenko 54a81e914b x86/asm/entry/64: Remove GET_THREAD_INFO() in ret_from_fork
It used to be used to check for _TIF_IA32, but the check has
been removed.

Remove GET_THREAD_INFO() too.

Run-tested.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-7-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:26 +02:00
Denys Vlasenko 66ad4efa51 x86/asm/entry/64: Simplify jumps in ret_from_fork
Replace
        test
        jz  1f
        jmp label
    1:

with
        test
        jnz label

Run-tested.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-6-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:25 +02:00
Denys Vlasenko a30b0085f5 x86/asm/entry/64: Remove a redundant jump
Jumping to the very next instruction is not very useful:

        jmp label
    label:

Removing the jump.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-5-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:25 +02:00
Denys Vlasenko 772951c4e4 x86/asm/entry/64: Optimize [v]fork/clone stubs
Replace "call func; ret" with "jmp func".

Run-tested.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-4-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:25 +02:00
Denys Vlasenko 0f90fb979d x86/asm/entry: Zero EXTRA_REGS for stub32_execve() too
The change which affected how execve clears EXTRA_REGS missed
32-bit execve syscalls.

Fix this by using 64-bit execve stub epilogue for them too.

Run-tested.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-3-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:24 +02:00
Denys Vlasenko 05f1752d19 x86/asm/entry/64: Move stub_x32_execvecloser() to stub_execveat()
This is a preparatory patch for moving stub32_execve[at]() to this
file. It makes sense to have all execve stubs in one place, so
that they can reuse code.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:24 +02:00
Denys Vlasenko 31f0119b81 x86/asm/entry/64: Use common code for rt_sigreturn() epilogue
Similarly to stub_execve, we can reuse the epilogue in
stub_rt_sigreturn() and stub_x32_rt_sigreturn().

Add a comment explaining why we can't eliminage SAVE_EXTRA_REGS
here.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 10:31:24 +02:00
Anton Blanchard 58995a9a5b powerpc, jump_label: Include linux/jump_label.h to get HAVE_JUMP_LABEL define
Commit 1bc9e47aa8 ("powerpc/jump_label: Use HAVE_JUMP_LABEL")
converted uses of CONFIG_JUMP_LABEL to HAVE_JUMP_LABEL in
some assembly files.

HAVE_JUMP_LABEL is defined in linux/jump_label.h, so we need to
include this or we always get the non jump label fallback code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Fixes: 1bc9e47aa8 ("powerpc/jump_label: Use HAVE_JUMP_LABEL")
Link: http://lkml.kernel.org/r/1428551492-21977-3-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 09:40:29 +02:00
Anton Blanchard c0ccf6f99e jump_label: Allow jump labels to be used in assembly
To use jump labels in assembly we need the HAVE_JUMP_LABEL
define, so we select a fallback version if the toolchain does
not support them.

Modify linux/jump_label.h so it can be included by assembly
files. We also need to add -DCC_HAVE_ASM_GOTO to KBUILD_AFLAGS.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: mpe@ellerman.id.au
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1428551492-21977-2-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 09:40:24 +02:00
Anton Blanchard 55dd0df781 jump_label: Allow asm/jump_label.h to be included in assembly
Wrap asm/jump_label.h for all archs with #ifndef __ASSEMBLY__.
Since these are kernel only headers, we don't need #ifdef
__KERNEL__ so can simplify things a bit.

If an architecture wants to use jump labels in assembly, it
will still need to define a macro to create the __jump_table
entries (see ARCH_STATIC_BRANCH in the powerpc asm/jump_label.h
for an example).

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: mpe@ellerman.id.au
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1428551492-21977-1-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-09 09:40:23 +02:00