linux-sg2042/drivers
Thierry Reding 95dcd64bc5 hwmon: (pwm-fan) Set fan speed to 0 on suspend
Technically this is not required because disabling the PWM should be
enough. However, when support for atomic operations was implemented in
the PWM subsystem, only actual changes to the PWM channel are applied
during pwm_config(), which means that during after resume from suspend
the old settings won't be applied.

One possible solution is for the PWM driver to implement its own PM
operations such that settings from before suspend get applied on resume.
This has the disadvantage of completely ignoring any particular ordering
requirements that PWM user drivers might have, so it is best to leave it
up to the user drivers to apply the settings that they want at the
appropriate time.

Another way to solve this would be to read back the current state of the
PWM at the time of resume. That way, in case the configuration was lost
during suspend, applying the old settings in PWM user drivers would
actually get them applied because they differ from the current settings.
However, not all PWM drivers support reading the hardware state, and not
all hardware may support it.

The best workaround at this point seems to be to let PWM user drivers
tell the PWM subsystem that the PWM is turned off by, in addition to
disabling it, also setting the duty cycle to 0. This causes the resume
operation to apply a configuration that is different from the current
configuration, resulting in the proper state from before suspend getting
restored.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-10-10 20:37:13 -07:00
..
accessibility
acpi Merge branch 'acpi-bus' 2018-09-07 10:05:20 +02:00
amba
android android: binder: fix the race mmap and alloc_new_buf_locked 2018-09-12 09:18:29 +02:00
ata for-linus-20180920 2018-09-21 09:41:05 +02:00
atm
auxdisplay Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
base Char/Misc fixes for 4.19-rc7 2018-10-07 08:15:57 +02:00
bcma
block for-linus-20180929 2018-09-29 14:52:14 -07:00
bluetooth Bluetooth: hci_ldisc: Free rw_semaphore on close 2018-09-11 13:33:57 +02:00
bus Merge branch 'perm-fix' into omap-for-v4.19/fixes-v2 2018-08-28 09:58:03 -07:00
cdrom cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status 2018-08-29 08:09:20 -06:00
char A few fixes that came around or after the merge window, except 2018-09-12 19:33:56 -10:00
clk clk: x86: Stop marking clocks as CLK_IS_CRITICAL 2018-09-17 18:47:58 -07:00
clocksource clocksource/drivers/timer-atmel-pit: Properly handle error cases 2018-09-27 12:01:45 +02:00
connector
cpufreq cpufreq: qcom-kryo: Fix section annotations 2018-09-29 15:01:10 +02:00
cpuidle cpuidle: menu: Retain tick when shallow state is selected 2018-08-25 13:16:08 +02:00
crypto crypto: qat - Fix KASAN stack-out-of-bounds bug in adf_probe() 2018-09-28 12:45:37 +08:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
devfreq Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
dio
dma dmaengine: mic_x100_dma: use devm_kzalloc to fix an issue 2018-08-27 11:16:04 +05:30
dma-buf
edac EDAC: Add missing MEM_LRDDR4 entry in edac_mem_types[] 2018-08-17 15:13:34 +02:00
eisa
extcon
firewire firewire: use 64-bit time_t based interfaces 2018-08-17 16:20:27 -07:00
firmware efi/libstub/arm: default EFI_ARMSTUB_DTB_LOADER to y 2018-09-12 16:41:41 +02:00
fmc
fpga fpga: bridge: fix obvious function documentation error 2018-09-30 08:49:55 -07:00
fsi fsi: sbefifo: Bump max command length 2018-08-08 15:44:47 +10:00
gnss
gpio gpiolib: Free the last requested descriptor 2018-09-18 16:36:05 -07:00
gpu Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2018-10-05 08:39:35 +10:00
hid HID: intel-ish-hid: Enable Ice Lake mobile 2018-09-24 11:46:15 +02:00
hsi
hv Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect() 2018-09-30 08:49:55 -07:00
hwmon hwmon: (pwm-fan) Set fan speed to 0 on suspend 2018-10-10 20:37:13 -07:00
hwspinlock hwspinlock: Fix incorrect return pointers 2018-07-30 20:54:51 -07:00
hwtracing intel_th: pci: Add Ice Lake PCH support 2018-09-18 16:08:38 +02:00
i2c i2c: designware: Call i2c_dw_clk_rate() only when calculating timings 2018-10-05 13:40:05 +02:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2018-08-22 07:40:33 -07:00
idle
iio First set of IIO fixes for the 4.19 cycle. 2018-09-09 09:33:29 +02:00
infiniband Second rc pull request 2018-09-27 21:53:55 +02:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-09-28 18:04:50 -07:00
iommu iommu/amd: Clear memory encryption mask from physical address 2018-10-05 10:20:24 +02:00
ipack
irqchip irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint 2018-09-06 20:31:59 +02:00
isdn isdn: Disable IIOCDBGVAR 2018-08-16 12:26:24 -07:00
leds leds: ns2: Change unsigned to unsigned int 2018-08-06 23:03:12 +02:00
lightnvm
macintosh macintosh: therm_windtunnel: drop using attach_adapter 2018-08-24 14:42:42 +02:00
mailbox mailbox: Add support for i.MX messaging unit 2018-08-15 09:53:07 +05:30
mcb
md - Fix a DM thinp __udivdi3 undefined on 32-bit bug introduced during 2018-10-05 16:09:56 -07:00
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
message scsi: message: fusion: Replace GFP_ATOMIC with GFP_KERNEL 2018-07-30 23:17:53 -04:00
mfd mfd: omap-usb-host: Fix dts probe of children 2018-09-11 16:47:33 +01:00
misc misc: hmc6352: fix potential Spectre v1 2018-09-12 09:31:00 +02:00
mmc mmc: slot-gpio: Fix debounce time to use miliseconds again 2018-09-28 17:43:48 +02:00
mtd mtd: devices: m25p80: Make sure the buffer passed in op is DMA-able 2018-09-18 10:17:48 +02:00
mux mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux 2018-08-02 10:23:02 +02:00
net net: mvpp2: Extract the correct ethtype from the skb for tx csum offload 2018-10-05 14:52:43 -07:00
nfc
ntb
nubus
nvdimm libnvdimm-for-4.19_dax-memory-failure 2018-08-25 18:43:59 -07:00
nvme nvme: properly propagate errors in nvme_mpath_init 2018-09-25 16:21:40 -07:00
nvmem
of Devicetree fixes for 4.19, part 2: 2018-09-14 13:03:17 -10:00
opp
oprofile
parisc
parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci pci-v4.19-fixes-3 2018-10-05 16:11:16 -07:00
pcmcia pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function 2018-08-18 12:30:42 -07:00
perf Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
phy Merge 4.18-rc7 into usb-next 2018-07-30 10:04:58 +02:00
pinctrl Revert "pinctrl: intel: Do pin translation when lock IRQ" 2018-09-25 12:50:00 +02:00
platform platform/x86: alienware-wmi: Correct a memory leak 2018-09-10 13:45:43 -07:00
pnp
power treewide: convert ISO_8859-1 text comments to utf-8 2018-08-23 18:48:43 -07:00
powercap
pps
ps3
ptp Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -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: fix crash caused by null driver data 2018-09-20 09:04:51 -07:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset ARM: SoC: late updates 2018-08-25 14:12:36 -07:00
rpmsg rpmsg: Add compat ioctl for rpmsg char driver 2018-07-30 23:40:23 -07:00
rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 s390: qeth: Fix potential array overrun in cmd/rc lookup 2018-09-28 10:27:26 -07:00
sbus
scsi scsi: qedi: Initialize the stats mutex lock 2018-09-28 02:28:05 -04:00
sfi
sh sh: introduce a sh_cacheop_vaddr helper 2018-08-02 13:54:06 +02:00
siox
slimbus
sn
soc soc: fsl: qe: Fix copy/paste bug in ucc_get_tdm_sync_shift() 2018-09-25 13:57:26 -07:00
soundwire soundwire: Fix acquiring bus lock twice during master release 2018-08-27 09:49:48 +05:30
spi spi: Fixes for v4.19 2018-09-28 18:04:06 -07:00
spmi
ssb ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUG 2018-08-09 18:47:47 +03:00
staging media fixes for v4.19-rc5 2018-09-24 15:16:41 +02:00
target scsi: target: iscsi: Use bin2hex instead of a re-implementation 2018-09-21 12:32:30 -04:00
tc
tee ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
thermal Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2018-08-28 16:11:34 -07:00
thunderbolt thunderbolt: Initialize after IOMMUs 2018-10-02 10:51:16 -07:00
tty Revert "serial: sh-sci: Allow for compressed SCIF address" 2018-10-02 14:38:16 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb usb: xhci-mtk: resume USB3 roothub first 2018-10-01 17:59:02 -07:00
uwb
vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-08-27 11:59:39 -07:00
video video/fbdev/stifb: Fix spelling mistake in fall-through annotation 2018-09-26 18:50:54 +02:00
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 xen: issue warning message when out of grant maptrack entries 2018-09-19 11:27:42 -04:00
zorro
Kconfig
Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00