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alistair23-linux/drivers/acpi
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Hans de Goede 3c670dba86 ACPI / PMIC: xpower: Block P-Unit I2C access during read-modify-write 
intel_xpower_pmic_update_power() does a read-modify-write of the output
control register. The i2c-designware code blocks the P-Unit I2C access
during the read and write by taking the P-Unit's PMIC bus semaphore.
But between the read and the write that semaphore is released and the
P-Unit could make changes to the register which we then end up overwriting.

This commit makes intel_xpower_pmic_update_power() take the semaphore
itself so that it is held over the entire read-modify-write, avoiding this
race.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-10-25 17:00:05 +02:00
..
acpica ACPICA: Remove acpi_gbl_group_module_level_code and only use acpi_gbl_execute_tables_as_methods instead 2018-10-18 09:17:04 +02:00
apei treewide: kvmalloc() -> kvmalloc_array() 2018-06-12 16:19:22 -07:00
arm64 dma-mapping: remove dma_deconfigure 2018-09-08 11:19:28 +02:00
dptf License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfit acpi, nfit: Further restrict userspace ARS start requests 2018-10-17 14:02:32 -07:00
pmic ACPI / PMIC: xpower: Block P-Unit I2C access during read-modify-write 2018-10-25 17:00:05 +02:00
x86 pci-v4.20-changes 2018-10-25 06:50:48 -07:00
ac.c ACPI updates for 4.18-rc1 2018-06-05 10:08:27 -07:00
acpi_adxl.c ACPI/ADXL: Add address translation interface using an ACPI DSM 2018-10-16 10:03:00 +02:00
acpi_amba.c ACPI / amba: Remove CLK_IS_ROOT 2016-04-27 23:42:57 +02:00
acpi_apd.c ACPI: APD: Add AMD misc clock handler support 2018-05-17 12:44:06 +02:00
acpi_cmos_rtc.c char/genrtc: x86: remove remnants of asm/rtc.h 2016-06-04 00:20:07 +02:00
acpi_configfs.c ACPI: configfs: make config_item_type const 2017-10-19 16:15:29 +02:00
acpi_dbg.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
acpi_extlog.c ACPI: Switch to use generic guid_t in acpi_evaluate_dsm() 2017-06-07 12:20:49 +02:00
acpi_ipmi.c acpi:ipmi: Convert ipmi_user_t to struct ipmi_user * 2018-09-18 16:15:33 -05:00
acpi_lpat.c ACPI / lpat: Fix typos in comments and kerneldoc style 2017-07-24 22:52:00 +02:00
acpi_lpit.c ACPI / PM: LPIT: Register sysfs attributes based on FADT 2018-10-04 09:01:06 +02:00
acpi_lpss.c Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
acpi_memhotplug.c
acpi_pad.c ACPI: Add Hygon Dhyana support 2018-09-27 18:29:00 +02:00
acpi_platform.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
acpi_pnp.c ACPI / PNP: constify device IDs 2016-01-04 22:10:30 +01:00
acpi_processor.c ACPI / processor: Fix the return value of acpi_processor_ids_walk() 2018-10-04 08:58:32 +02:00
acpi_tad.c ACPI: TAD: Add low-level support for real time capability 2018-10-18 09:11:53 +02:00
acpi_video.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
acpi_watchdog.c ACPI / watchdog: Prefer iTCO_wdt always when WDAT table uses RTC SRAM 2018-05-24 10:52:49 +02:00
battery.c ACPI / battery: Do not export energy_full[_design] on devices without full_charge_capacity 2018-08-09 10:49:35 +02:00
bgrt.c ACPI: BGRT: constify attribute_group structures 2017-07-04 22:15:20 +02:00
blacklist.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
bus.c ACPI: probe ECDT before loading AML tables regardless of module-level code flag 2018-10-18 09:19:17 +02:00
button.c ACPI / button: fix defined but not used warning 2018-07-09 11:32:44 +02:00
cm_sbs.c
container.c
cppc_acpi.c ACPI / CPPC: Add support for guaranteed performance 2018-10-16 10:33:38 +02:00
custom_method.c ACPI: custom_method: remove meaningless null check before debugfs_remove() 2018-09-10 12:46:51 +02:00
debugfs.c
device_pm.c PM / Domains: Allow a better error handling of dev_pm_domain_attach() 2018-05-14 22:58:44 +02:00
device_sysfs.c treewide: Use DEVICE_ATTR_RO 2018-01-09 16:34:34 +01:00
dock.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
ec.c ACPI / EC: Add another entry for Thinkpad X1 Carbon 6th 2018-08-09 11:01:59 +02:00
ec_sys.c ACPI: EC: Fix debugfs_create_*() usage 2018-01-04 13:54:51 +01:00
event.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
evged.c ACPI: GED: unregister interrupts during shutdown 2017-12-16 03:05:37 +01:00
fan.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
glue.c ACPI / glue: Split dev_is_platform() out of module for wide use 2018-09-10 12:48:50 +02:00
hed.c
internal.h ACPI: EC: Dispatch the EC GPE directly on s2idle wake 2018-05-25 10:32:13 +02:00
ioapic.c ACPI: fix whitespace in pr_fmt() to align log entries 2017-06-22 02:18:20 +02:00
irq.c ACPI / irq: Fix return code of acpi_gsi_to_irq() 2017-07-12 13:11:49 +02:00
Kconfig - amd64_edac: AMD family 0x17, models 0x10-0x2f support (Michael Jin) 2018-10-25 06:40:00 -07:00
Makefile ACPI/ADXL: Add address translation interface using an ACPI DSM 2018-10-16 10:03:00 +02:00
numa.c acpi, numa: fix pxm to online numa node associations 2018-03-15 19:49:14 -07:00
nvs.c
osi.c ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio 2018-07-20 10:12:41 +02:00
osl.c Merge branches 'acpi-property' and 'acpi-sbs' 2018-10-18 12:37:51 +02:00
pci_irq.c ACPI / PCI: fix GIC irq model default PCI IRQ polarity 2016-09-10 02:50:50 +02:00
pci_link.c ACPI / PCI: pci_link: Allow the absence of _PRS and change log level 2018-02-27 17:15:39 +01:00
pci_mcfg.c PCI/ACPI: Add ThunderX pass2.x 2nd node MCFG quirk 2017-04-24 11:58:56 -05:00
pci_root.c PCI/ACPI: Allow _OSC presence to be optional for PCI 2018-09-17 16:32:24 -05:00
pci_slot.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
power.c ACPI / power: constify attribute_group structures 2017-07-04 22:15:14 +02:00
pptt.c ACPI/PPTT: Handle architecturally unknown cache types 2018-10-04 23:02:17 +02:00
proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_core.c xen/ACPI: don't upload Px/Cx data for disabled processors 2018-08-20 14:46:18 -04:00
processor_driver.c ACPI: processor: use dev_dbg() instead of dev_warn() when CPPC probe failed 2017-07-27 01:51:06 +02:00
processor_idle.c ACPI: Add Hygon Dhyana support 2018-09-27 18:29:00 +02:00
processor_pdc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_perflib.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
processor_thermal.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
processor_throttling.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
property.c PCI / ACPI: Whitelist D3 for more PCIe hotplug ports 2018-10-02 16:04:40 -05:00
reboot.c ACPI: add missing newline to printk 2018-05-02 13:01:08 +02:00
resource.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
sbs.c ACPI / SBS: Fix GPE storm on recent MacBookPro's 2018-10-08 08:41:35 +02:00
sbshc.c ACPI / SBS: Fix rare oops when removing modules 2018-10-08 08:41:35 +02:00
sbshc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scan.c ACPI updates for 4.20-rc1 2018-10-23 10:33:16 +01:00
sleep.c ACPI / PM: save NVS memory for ASUS 1025C laptop 2018-07-11 11:42:13 +02:00
sleep.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spcr.c ACPI: SPCR: Mark expected switch fall-through in acpi_parse_spcr 2018-02-12 10:31:26 +01:00
sysfs.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
tables.c arm64 updates for 4.18: 2018-06-08 11:10:58 -07:00
thermal.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
utils.c ACPI: utils: Introduce acpi_dev_get_first_match_name() 2018-01-10 00:41:43 +01:00
video_detect.c ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E 2018-03-20 10:38:17 +01:00
wakeup.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00