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c537d34575
linux/drivers
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Fabrice Gasnier c537d34575 iio: adc: stm32-adc: fix runtime autosuspend delay when slow polling 
When the ADC is runtime suspended and starting a conversion, the stm32-adc
driver calls pm_runtime_get_sync() that gets cascaded to the parent
(e.g. runtime resume of stm32-adc-core driver). This also kicks the
autosuspend delay (e.g. 2s) of the parent.
Once the ADC is active, calling pm_runtime_get_sync() again (upon a new
capture) won't kick the autosuspend delay for the parent (stm32-adc-core
driver) as already active.

Currently, this makes the stm32-adc-core driver go in suspend state
every 2s when doing slow polling. As an example, doing a capture, e.g.
cat in_voltageY_raw at a 0.2s rate, the auto suspend delay for the parent
isn't refreshed. Once it expires, the parent immediately falls into
runtime suspended state, in between two captures, as soon as the child
driver falls into runtime suspend state:
- e.g. after 2s, + child calls pm_runtime_put_autosuspend() + 100ms
  autosuspend delay of the child.
- stm32-adc-core switches off regulators, clocks and so on.
- They get switched on back again 100ms later in this example (at 2.2s).

So, use runtime_idle() callback in stm32-adc-core driver to call
pm_runtime_mark_last_busy() for the parent driver (stm32-adc-core),
to avoid this.

Fixes: 9bdbb1139c ("iio: adc: stm32-adc: add power management support")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/1593615328-5180-1-git-send-email-fabrice.gasnier@st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-09-29 17:50:51 +01:00
..
accessibility Char/Misc driver fixes for 5.9-rc3 2020-08-26 10:50:50 -07:00
acpi Merge branch 'acpi-mm' 2020-08-28 21:17:56 +02:00
amba
android drivers: android: Fix the SPDX comment style 2020-07-29 17:05:44 +02:00
ata libata-5.9-2020-09-04 2020-09-04 13:19:19 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
auxdisplay A trivial patch for auxdisplay: 2020-09-05 14:22:46 -07:00
base Driver core fixes for 5.9-rc5 2020-09-13 09:02:59 -07:00
bcma bcma: gpio: Use irqchip template 2020-08-02 18:26:51 +03:00
block rbd: require global CAP_SYS_ADMIN for mapping and unmapping 2020-09-07 13:14:30 +02:00
bluetooth Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2020-07-31 15:11:52 -07:00
bus treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
cdrom
char Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-08-30 15:53:44 -07:00
clk More ACPI updates for 5.9-rc1 2020-08-15 08:18:22 -07:00
clocksource treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
connector
counter counter: use semicolons rather than commas to separate statements 2020-09-29 17:27:08 +01:00
cpufreq cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled 2020-09-01 21:15:00 +02:00
cpuidle cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic 2020-08-26 12:41:53 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-08-30 15:53:44 -07:00
dax libnvdimm fix for v5.9-rc5 2020-09-12 12:43:58 -07:00
dca
devfreq PM / devfreq: Fix the wrong end with semicolon 2020-07-30 17:22:58 +09:00
dio
dma dmaengine fixes for v5.9-rc4 2020-09-04 12:12:39 -07:00
dma-buf dma-buf: fence-chain: Document missing dma_fence_chain_init() parameter in kerneldoc 2020-09-03 17:47:02 +05:30
edac A fix to properly clear ghes_edac driver state on driver remove so that 2020-08-30 10:47:23 -07:00
eisa
extcon
firewire treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
firmware Driver core fixes for 5.9-rc5 2020-09-13 09:02:59 -07:00
fpga Linux 5.8-rc7 2020-07-27 11:49:37 +02:00
fsi
gnss
gpio treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
gpu drm-misc-fixes for v5.9-rc5: 2020-09-11 09:49:23 +10:00
greybus greybus: Use fallthrough pseudo-keyword 2020-07-29 16:58:08 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2020-09-02 12:55:46 -07:00
hsi treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hv hyperv-fixes for 5.9-rc3 2020-08-26 10:44:15 -07:00
hwmon hwmon fixes for v5.9-rc3 2020-08-29 12:37:00 -07:00
hwspinlock
hwtracing treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
i2c i2c: algo: pca: Reapply i2c bus settings after reset 2020-09-09 10:22:40 +02:00
i3c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ide treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
idle cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic 2020-08-26 12:41:53 +02:00
iio iio: adc: stm32-adc: fix runtime autosuspend delay when slow polling 2020-09-29 17:50:51 +01:00
infiniband RDMA second 5.9-rc pull request 2020-09-11 10:02:36 -07:00
input treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
interconnect interconnect: qcom: Fix small BW votes being truncated to zero 2020-09-04 00:07:12 +03:00
iommu iommu/vt-d: Handle 36bit addressing for x86-32 2020-09-04 12:14:28 +02:00
ipack
irqchip A set of fixes for interrupt chip drivers: 2020-08-30 11:56:54 -07:00
isdn treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
leds LEDs changes for 5.9-rc1. 2020-08-05 19:24:27 -07:00
lightnvm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
macintosh treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mailbox iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
mcb
md dm thin metadata: Fix use-after-free in dm_bm_set_read_only 2020-09-02 13:38:40 -04:00
media media fixes for v5.9-rc4 2020-09-03 08:22:16 -07:00
memory treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
memstick treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
message treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mfd - Bug Fixes 2020-08-28 10:15:33 -07:00
misc Char / Misc driver fixes for 5.9-rc5 2020-09-13 08:52:21 -07:00
mmc mmc: sdio: Use mmc_pre_req() / mmc_post_req() 2020-09-07 08:57:44 +02:00
most drivers: most: add character device interface driver 2020-09-07 15:16:26 +02:00
mtd This pull request contains changes for JFFS2, UBI and UBIFS 2020-08-10 18:20:04 -07:00
mux treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
net Merge 5.9-rc5 into staging-next 2020-09-14 06:57:52 +02:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
ntb treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nubus
nvdimm libnvdimm: KASAN: global-out-of-bounds Read in internal_create_group 2020-08-17 14:47:38 -06:00
nvme - Fix a regression in bdev partition locking (Christoph) 2020-09-11 11:55:28 -07:00
nvmem nvmem: qcom-spmi-sdam: Enable multiple devices 2020-07-29 17:12:09 +02:00
of of: address: Work around missing device_type property in pcie nodes 2020-08-19 16:30:57 -06:00
opp Merge branch 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm 2020-09-01 19:44:20 +02:00
oprofile
parisc Merge branch 'parisc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2020-08-12 12:41:15 -07:00
parport treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pci treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pcmcia treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
perf treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
phy phy: fixes for 5.9 2020-09-04 12:41:55 +02:00
pinctrl This is the bulk of the pin control changes for the v5.9 2020-08-09 12:52:28 -07:00
platform treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pnp
power treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
powercap powercap/intel_rapl: add support for AlderLake 2020-09-10 19:17:29 +02:00
pps
ps3 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ptp ptp: ptp_clockmatrix: use i2c_master_send for i2c write 2020-08-19 16:23:22 -07:00
pwm pwm: Changes for v5.9-rc1 2020-08-14 16:00:09 -07:00
rapidio rapidio: Replace 'select' DMAENGINES 'with depends on' 2020-09-05 19:52:54 +03:00
ras
regulator regulator: Fixes for v5.9 2020-09-11 11:25:55 -07:00
remoteproc treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
reset treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rpmsg treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rtc treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
s390 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sbus
scsi SCSI fixes on 20200908 2020-09-08 11:42:58 -07:00
sfi
sh iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
siox
slimbus
soc treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
soundwire soundwire: fix double free of dangling pointer 2020-09-03 14:10:19 +05:30
spi spi: Fixes for v5.9 2020-09-11 11:35:55 -07:00
spmi
ssb treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
staging staging: r8188eu: replace WIFI_REASON_CODE enum with native ieee80211_reasoncode 2020-09-22 09:51:28 +02:00
target SCSI fixes on 20200908 2020-09-08 11:42:58 -07:00
tc
tee
thermal - Fix bogus thermal shutdowns for omap4430 where bogus values 2020-09-04 12:49:03 -07:00
thunderbolt thunderbolt: Fixes for v5.9-rc4 2020-09-01 09:48:28 +02:00
tty TTY/Serial fixes for 5.9-rc3 2020-08-26 10:58:20 -07:00
uio
usb USB-serial fixes for 5.9-rc5 2020-09-08 17:50:58 +02:00
vdpa vdpa/mlx5: Avoid warnings about shifts on 32-bit platforms 2020-08-26 08:13:59 -04:00
vfio treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
video video: fbdev: fix OOB read in vga_8planes_imageblit() 2020-09-04 17:27:10 +02:00
virt
virtio virtio: pci: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
visorbus
vlynq
vme
w1
watchdog treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xen xen: branch for v5.9-rc4 2020-09-06 09:59:27 -07:00
zorro
Kconfig
Makefile