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f954b098fb
linux/drivers/iio
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Lars-Peter Clausen f954b098fb iio: xilinx-xadc: Fix clearing interrupt when enabling trigger 
When enabling the trigger and unmasking the end-of-sequence (EOS) interrupt
the EOS interrupt should be cleared from the status register. Otherwise it
is possible that it was still set from a previous capture. If that is the
case the interrupt would fire immediately even though no conversion has
been done yet and stale data is being read from the device.

The old code only clears the interrupt if the interrupt was previously
unmasked. Which does not make much sense since the interrupt is always
masked at this point and in addition masking the interrupt does not clear
the interrupt from the status register. So the clearing needs to be done
unconditionally.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Fixes: bdc8cda1d0 ("iio:adc: Add Xilinx XADC driver")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-04-19 17:50:01 +01:00
..
accel Merge 5.6-rc7 into staging-next 2020-03-23 08:01:20 +01:00
adc iio: xilinx-xadc: Fix clearing interrupt when enabling trigger 2020-04-19 17:50:01 +01:00
afe treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
amplifiers iio: amplifiers: ad8366: add support for HMC1119 Attenuator 2020-03-08 17:28:43 +00:00
buffer iio: buffer: rename 'read_first_n' callback to 'read' 2019-12-29 15:20:09 +00:00
chemical Merge 5.6-rc7 into staging-next 2020-03-23 08:01:20 +01:00
common iio: st_sensors: handle memory allocation failure to fix null pointer dereference 2020-02-14 12:08:22 +00:00
dac iio: dac: ad5770r: fix off-by-one check on maximum number of channels 2020-04-19 17:50:01 +01:00
dummy spi: docs: convert to ReST and add it to the kABI bookset 2019-07-31 14:13:13 -06:00
frequency iio: adf4350: Convert to use GPIO descriptor 2019-12-15 11:42:16 +00:00
gyro iio: imu: adis: Add self_test_reg variable 2020-03-08 17:28:30 +00:00
health treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
humidity iio: humidity: dht11 remove TODO since it doesn't make sense 2020-01-12 11:34:15 +00:00
imu iio: imu: st_lsm6dsx: flush hw FIFO before resetting the device 2020-04-19 17:50:01 +01:00
light Merge 5.6-rc7 into staging-next 2020-03-23 08:01:20 +01:00
magnetometer iio: magnetometer: ak8974: Fix negative raw values in sysfs 2020-02-21 11:59:46 +00:00
multiplexer treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
orientation treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 309 2019-06-05 17:37:04 +02:00
potentiometer iio: potentiometer: add a driver for Maxim 5432-5435 2019-08-05 14:25:08 +01:00
potentiostat iio: potentiostat: lmp9100: fix iio_triggered_buffer_{predisable,postenable} positions 2020-03-08 17:28:53 +00:00
pressure counter: 104-quad-8: Support Filter Clock Prescaler 2020-03-08 17:28:52 +00:00
proximity Merge 5.6-rc7 into staging-next 2020-03-23 08:01:20 +01:00
resolver iio: ad2s1200: Drop legacy include 2019-12-15 11:42:15 +00:00
temperature First set of new device support, features and cleanups for IIO in the 5.6 cycle 2020-01-10 10:44:00 +01:00
trigger Merge 5.6-rc7 into staging-next 2020-03-23 08:01:20 +01:00
iio_core_trigger.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
iio_core.h iio: buffer: rename 'read_first_n' callback to 'read' 2019-12-29 15:20:09 +00:00
industrialio-buffer.c Merge 5.5-rc7 into staging-next 2020-01-22 09:05:34 +01:00
industrialio-configfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
industrialio-core.c iio: core: Fix handling of 'dB' 2020-04-19 17:50:01 +01:00
industrialio-event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
industrialio-sw-device.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
industrialio-sw-trigger.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
industrialio-trigger.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
industrialio-triggered-event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
inkern.c Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
Kconfig Second set of IIO device support, features, cleanups and minor fixes for 5.3. 2019-07-01 10:58:13 +02:00
Makefile counter: stm32-lptimer: add counter device 2019-04-25 21:33:41 +02:00
TODO iio: add a TODO 2020-03-08 17:28:53 +00:00