linux/drivers/iio/imu
Lorenzo Bianconi b7d8a1a073 iio: imu: st_lsm6dsx: fix edge-trigger interrupts
commit 3f9bce7a22 upstream

If we are using edge IRQs, new samples can arrive while processing
current interrupt since there are no hw guarantees the irq line
stays "low" long enough to properly detect the new interrupt.
In this case the new sample will be missed.
Polling FIFO status register in st_lsm6dsx_handler_thread routine
allow us to read new samples even if the interrupt arrives while
processing previous data and the timeslot where the line is "low"
is too short to be properly detected.

Fixes: 89ca88a7cd ("iio: imu: st_lsm6dsx: support active-low interrupts")
Fixes: 290a6ce11d ("iio: imu: add support to lsm6dsx driver")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/5e93cda7dc1e665f5685c53ad8e9ea71dbae782d.1605378871.git.lorenzo@kernel.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[sudip: manual backport to old irq handler path]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-17 14:04:21 +01:00
..
bmi160 iio:imu:bmi160: Fix alignment and data leak issues 2021-01-09 13:43:48 +01:00
inv_mpu6050 iio: imu: mpu6050: add missing available scan masks 2019-12-17 20:36:01 +01:00
st_lsm6dsx iio: imu: st_lsm6dsx: fix edge-trigger interrupts 2021-01-17 14:04:21 +01:00
adis_buffer.c iio: imu: adis16400: release allocated memory on failure 2019-11-06 13:06:02 +01:00
adis_trigger.c iio: adis_lib: Initialize trigger before requesting interrupt 2018-02-17 14:16:35 +00:00
adis.c iio:imu:adis: Mark expected switch fall-throughs 2018-07-07 18:01:05 +01:00
adis16400_buffer.c iio: imu: adis16400: fix memory leak 2020-08-05 10:05:59 +02:00
adis16400_core.c iio:imu: drop assign iio_info.driver_module and iio_trigger_ops.owner 2017-08-22 21:31:01 +01:00
adis16400.h iio: adis16400: Fix burst transfer for adis16448 2015-05-16 11:01:20 +01:00
adis16480.c iio: imu: adis16480: assign bias value only if operation succeeded 2020-01-17 19:47:05 +01:00
Kconfig iio: imu: add support to lsm6dsx driver 2017-01-14 12:40:37 +00:00
kmx61.c iio:imu: drop assign iio_info.driver_module and iio_trigger_ops.owner 2017-08-22 21:31:01 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00