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Martin Kelly fe5192ac81 iio:st_magn: Fix enable device after trigger 
Currently, we enable the device before we enable the device trigger. At
high frequencies, this can cause interrupts that don't yet have a poll
function associated with them and are thus treated as spurious. At high
frequencies with level interrupts, this can even cause an interrupt storm
of repeated spurious interrupts (~100,000 on my Beagleboard with the
LSM9DS1 magnetometer). If these repeat too much, the interrupt will get
disabled and the device will stop functioning.

To prevent these problems, enable the device prior to enabling the device
trigger, and disable the divec prior to disabling the trigger. This means
there's no window of time during which the device creates interrupts but we
have no trigger to answer them.

Fixes: 90efe05562 ("iio: st_sensors: harden interrupt handling")
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Tested-by: Denis Ciocca <denis.ciocca@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 		2018-11-03 11:24:07 +00:00
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accessibility
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acpi ACPI / PMIC: xpower: Add depends on IOSF_MBI to Kconfig entry 2018-10-25 17:00:05 +02:00
amba
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android
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ata libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9 2018-10-26 08:21:04 -06:00
atm atm: zatm: Fix empty body Clang warnings 2018-10-18 15:39:10 -07:00
auxdisplay
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base mm, proc: add KReclaimable to /proc/meminfo 2018-10-26 16:26:32 -07:00
bcma
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block powerpc updates for 4.20 2018-10-26 14:36:21 -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 ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
cdrom gdrom: fix mistake in assignment of error 2018-10-25 11:17:40 -06:00
char RTC for 4.20 2018-10-27 09:24:24 -07:00
clk ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
clocksource RISC-V Patches for the 4.20 Merge Window, Part 1 2018-10-25 18:01:29 -07:00
connector
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cpufreq cpufreq: remove unused arm_big_little_dt driver 2018-10-25 18:39:02 +02:00
cpuidle More power management updates for 4.20-rc1 2018-10-30 09:08:07 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-10-25 16:43:35 -07:00
dax
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dca
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devfreq
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dio
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dma pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dma-buf
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edac ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
eisa
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extcon
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firewire
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firmware ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
fmc
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fpga fpga: add devm_fpga_region_create 2018-10-16 11:13:50 +02:00
fsi
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gnss
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gpio pci-v4.20-changes 2018-10-25 06:50:48 -07:00
gpu media updates for v4.20-rc1 2018-10-29 14:29:58 -07:00
hid media updates for v4.20-rc1 2018-10-29 14:29:58 -07:00
hsi
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hv hv_balloon: Replace spin_is_locked() with lockdep 2018-10-15 20:54:17 +02:00
hwmon Lots of small changes to the IPMI driver. Most of the changes 2018-10-23 09:42:05 +01:00
hwspinlock
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hwtracing stm class: Use memcat_p() 2018-10-11 12:12:55 +02:00
i2c More ACPI updates for 4.20-rc1 2018-10-30 09:15:31 -07:00
ide
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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 iio:st_magn: Fix enable device after trigger 2018-11-03 11:24:07 +00:00
infiniband Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks" 2018-10-26 16:25:19 -07:00
input Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
iommu Merge branch 'akpm' (patches from Andrew) 2018-10-26 19:33:41 -07:00
ipack
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irqchip This tag contains the Linux port for C-SKY(csky) based on linux-4.19 2018-10-29 08:25:00 -07:00
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: gpio: set led_dat->gpiod pointer for OF defined GPIO leds 2018-10-26 20:51:36 +02:00
lightnvm
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macintosh macintosh/windfarm_smu_sat: Fix debug output 2018-10-19 00:56:17 +11:00
mailbox - Convert print users to use the %pOFn format specifier 2018-10-29 10:30:44 -07:00
mcb
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md Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2018-10-26 13:00:44 -07:00
media media updates for v4.20-rc1 2018-10-29 14:29:58 -07:00
memory
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memstick
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message
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mfd - New Drivers 2018-10-25 06:19:15 -07:00
misc Merge branch 'i2c/for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-10-29 14:44:03 -07:00
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 macsec: let the administrator set UP state even if lowerdev is down 2018-10-28 19:26:42 -07:00
nfc NFC: nfcmrvl_uart: fix OF child-node lookup 2018-10-23 13:28:53 -05:00
ntb
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nubus
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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 nvmem: hide unused nvmem_find_cell_by_index function 2018-10-15 15:56:15 +02:00
of TTY/Serial patches for 4.20-rc1 2018-10-29 10:42:20 -07:00
opp
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oprofile
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parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport
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pci Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
pcmcia powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy USB/PHY patches for 4.20-rc1 2018-10-26 08:14:13 -07:00
pinctrl This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
platform Char/Misc driver patches for 4.20-rc1 2018-10-26 09:11:43 -07:00
pnp
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power Devicetree updates for 4.20: 2018-10-26 12:09:58 -07:00
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
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ps3
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ptp ptp: drop redundant kasprintf() to create worker name 2018-10-28 19:20:06 -07:00
pwm
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rapidio
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ras
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regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc remoteproc: qcom: q6v5-mss: Register segments/dumpfn for coredump 2018-10-19 12:54:03 -07:00
reset ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
rpmsg
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rtc rtc: sc27xx: Always read normal alarm when registering RTC device 2018-10-25 02:35:42 +02:00
s390 KVM updates for v4.20 2018-10-25 17:57:35 -07:00
sbus
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scsi for-linus-20181026 2018-10-26 12:43:13 -07:00
sfi
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sh
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siox
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slimbus
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sn
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soc ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
soundwire
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spi - New Drivers 2018-10-25 06:19:15 -07:00
spmi
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ssb
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staging media updates for v4.20-rc1 2018-10-29 14:29:58 -07:00
target SCSI misc on 20181024 2018-10-25 07:40:30 -07:00
tc TC: Set DMA masks for devices 2018-10-11 09:16:44 -07:00
tee
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thermal Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2018-10-26 12:04:29 -07:00
thunderbolt
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tty TTY/Serial patches for 4.20-rc1 2018-10-29 10:42:20 -07:00
uio
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usb USB/PHY patches for 4.20-rc1 2018-10-26 08:14:13 -07:00
uwb
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vfio KVM: PPC: Optimize clearing TCEs for sparse tables 2018-10-20 20:47:02 +11:00
vhost
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video media updates for v4.20-rc1 2018-10-29 14:29:58 -07:00
virt
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virtio
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visorbus
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vlynq
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vme
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w1 w1: IAD Register is yet readable trough iad sys file. Fix snprintf (%u for unsigned, count for max size). 2018-10-15 20:50:32 +02:00
watchdog watchdog: ts4800: release syscon device node in ts4800_wdt_probe() 2018-10-22 10:16:28 +02:00
xen xen: drop writing error messages to xenstore 2018-10-26 09:17:16 +02:00
zorro
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Kconfig
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Makefile
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