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3c670dba86
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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
..
accessibility
acpi ACPI / PMIC: xpower: Block P-Unit I2C access during read-modify-write 2018-10-25 17:00:05 +02:00
amba
android android: binder: fix the race mmap and alloc_new_buf_locked 2018-09-12 09:18:29 +02:00
ata pci-v4.20-changes 2018-10-25 06:50:48 -07:00
atm atm: zatm: Fix empty body Clang warnings 2018-10-18 15:39:10 -07:00
auxdisplay gpiolib: Pass array info to get/set array functions 2018-09-13 11:16:54 +02:00
base Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 15:00:03 +01:00
bcma
block pci-v4.20-changes 2018-10-25 06:50:48 -07:00
bluetooth Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
bus This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
cdrom gdrom: convert to blk-mq 2018-10-16 09:50:39 -06:00
char Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
clk One fix for the Allwinner A10 SoC's audio PLL that wasn't properly set 2018-10-17 13:40:10 +02:00
clocksource arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
connector
cpufreq Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 16:16:40 +01:00
cpuidle cpuidle: menu: Avoid computations when result will be discarded 2018-10-18 09:34:13 +02:00
crypto pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
devfreq PM / devfreq: remove redundant null pointer check before kfree 2018-10-02 10:16:41 +09:00
dio
dma pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dma-buf
edac - amd64_edac: AMD family 0x17, models 0x10-0x2f support (Michael Jin) 2018-10-25 06:40:00 -07:00
eisa
extcon
firewire FireWire: clean up core-transaction.c kernel-doc 2018-09-06 09:41:09 -06:00
firmware EFI updates for v4.20: 2018-09-27 16:58:49 +02:00
fmc
fpga fpga: bridge: fix obvious function documentation error 2018-09-30 08:49:55 -07:00
fsi
gnss
gpio pci-v4.20-changes 2018-10-25 06:50:48 -07:00
gpu Second pull request for v4.19: 2018-10-20 12:26:26 +10:00
hid Merge branch 'for-4.20/multitouch' into for-linus 2018-10-23 13:36:28 +02:00
hsi
hv Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect() 2018-09-30 08:49:55 -07:00
hwmon Lots of small changes to the IPMI driver. Most of the changes 2018-10-23 09:42:05 +01:00
hwspinlock
hwtracing intel_th: pci: Add Ice Lake PCH support 2018-09-18 16:08:38 +02:00
i2c x86: baytrail/cherrytrail: Rework and move P-Unit PMIC bus semaphore code 2018-10-25 16:59:08 +02:00
ide block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
idle 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
iio - New Drivers 2018-10-25 06:19:15 -07:00
infiniband pci-v4.20-changes 2018-10-25 06:50:48 -07:00
input - New Drivers 2018-10-25 06:19:15 -07:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:05:28 +01:00
ipack
irqchip irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint 2018-09-06 20:31:59 +02:00
isdn Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
leds leds: sc27xx: Add pattern_set/clear interfaces for LED controller 2018-10-11 21:59:11 +02:00
lightnvm lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
macintosh macintosh: therm_windtunnel: drop using attach_adapter 2018-08-24 14:42:42 +02:00
mailbox mailbox: PCC: handle parse error 2018-09-10 12:54:02 +02:00
mcb
md for-4.20/block-20181021 2018-10-22 17:46:08 +01:00
media media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
memory memory: ti-aemif: fix a potential NULL-pointer dereference 2018-09-06 10:04:07 -07:00
memstick block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
message
mfd - New Drivers 2018-10-25 06:19:15 -07:00
misc Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-10-24 11:22:39 +01:00
mmc 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
mtd SPI NOR changes: 2018-10-23 01:09:22 +01:00
mux This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
net pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nfc
ntb
nubus
nvdimm libnvdimm for 4.20 2018-10-25 06:31:56 -07:00
nvme pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nvmem
of First batch of dma-mapping changes for 4.20: 2018-10-22 18:16:03 +01:00
opp PM / OPP: _of_add_opp_table_v2(): increment count only if OPP is added 2018-10-04 09:21:36 +05:30
oprofile
parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-10-23 10:22:33 +01:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
pinctrl This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
platform pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pnp
power power: max8925: mark expected switch fall-through 2018-10-21 21:33:35 +02:00
powercap 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
pps
ps3
ptp ptp: ptp_dte: simplify getting .driver_data 2018-10-22 19:48:35 -07:00
pwm pwm: mediatek: Add MT7628 support 2018-08-20 11:36:07 +02:00
rapidio drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md 2018-08-22 10:52:51 -07:00
ras
regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset reset: imx7: Add PCIE_CTRL_APPS_TURNOFF 2018-10-05 09:56:19 +01:00
rpmsg
rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 pci-v4.20-changes 2018-10-25 06:50:48 -07:00
sbus oradax: remove redundant null check before kfree 2018-10-07 22:42:00 -07:00
scsi pci-v4.20-changes 2018-10-25 06:50:48 -07:00
sfi
sh
siox
slimbus
sn
soc net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST 2018-10-24 08:11:35 +01:00
soundwire soundwire: Fix acquiring bus lock twice during master release 2018-08-27 09:49:48 +05:30
spi - New Drivers 2018-10-25 06:19:15 -07:00
spmi
ssb ssb: chipcommon: fix fall-through annotation 2018-10-05 11:37:20 +03:00
staging Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
target block: Finish renaming REQ_DISCARD into REQ_OP_DISCARD 2018-10-03 16:12:28 -06:00
tc
tee ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
thermal x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
thunderbolt thunderbolt: Initialize after IOMMUs 2018-10-02 10:51:16 -07:00
tty - New Drivers 2018-10-25 06:19:15 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
uwb
vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost net: vhost: remove bad code line 2018-10-07 21:31:32 -07:00
video - Old Drivers 2018-10-25 06:21:28 -07:00
virt
virtio virtio, vhost: fixes, tweaks 2018-08-24 08:45:19 -07:00
visorbus
vlynq
vme
w1 power supply and reset changes for the v4.19 series 2018-08-21 18:06:27 -07:00
watchdog include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
xen Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:54:58 +01:00
zorro
Kconfig
Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00