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Mircea Caprioru af7cc8ebab iio: dac: ad5686: fix bit shift read register 
commit 0e76df5c97 upstream.

This patch solves the register readback issue with the bit shift. When the
dac resolution was lower than the register size (ex. 12 bits out of 16
bits) the readback value was not shifted with the difference in bits and
the value was higher. Also a mask is applied on the read value in order to
get the value relative to the actual bit size.

Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-13 09:51:08 +01:00
..
accel iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
adc iio: adc: at91: fix wrong channel number in triggered buffer mode 2018-11-13 11:08:47 -08:00
afe iio: afe: rescale: new driver 2018-04-28 18:03:22 +01:00
amplifiers iio: amplifiers: ad8366: move channel init before iio_device_register() 2018-05-22 18:13:45 +01:00
buffer iio:kfifo_buf: check for uint overflow 2018-03-30 11:16:12 +01:00
chemical iio: chemical: Add support for Bosch BME680 sensor 2018-07-28 11:38:46 +01:00
common iio: change strncpy+truncation to strlcpy 2018-07-15 11:38:06 +01:00
counter iio: 104-quad-8: Provide defines for magic numbers 2018-06-10 11:52:30 +01:00
dac iio: dac: ad5686: fix bit shift read register 2019-01-13 09:51:08 +01:00
dummy iio:dummy: Add extra paragraphs on Kconfig 2018-03-03 15:20:16 +00:00
frequency Merge branch 'fixes-togreg' into togreg 2018-08-01 18:56:17 +01:00
gyro iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
health iio: add SPDX identifier for various drivers 2018-02-18 11:55:19 +00:00
humidity iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
imu iio: imu: st_lsm6dsx: take into account ts samples in wm configuration 2018-09-02 21:19:53 +01:00
light iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
magnetometer iio:st_magn: Fix enable device after trigger 2018-12-05 19:32:13 +01:00
multiplexer treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
orientation iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
potentiometer iio: potentiometer: mcp4531: switch to using .probe_new 2018-04-15 18:12:51 +01:00
potentiostat iio: potentiostat: lmp91000: add LMP91002 support 2018-05-12 11:02:44 +01:00
pressure iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
proximity iio: light: isl29501: Add support for the ISL29501 ToF sensor. 2018-07-23 19:18:10 +01:00
resolver staging: iio: ad2s1200: Move driver out of staging 2018-05-20 12:17:48 +01:00
temperature iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-12-05 19:32:13 +01:00
trigger iio: stm32: Adopt SPDX identifier 2018-01-08 16:03:41 +01:00
iio_core.h
iio_core_trigger.h
industrialio-buffer.c First round of IIO fixes for the 4.16 cycle. 2018-02-20 10:03:22 +01:00
industrialio-configfs.c
industrialio-core.c iio: Add modifier for DUV light 2018-07-23 19:18:10 +01:00
industrialio-event.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
industrialio-sw-device.c
industrialio-sw-trigger.c
industrialio-trigger.c
industrialio-triggered-event.c
inkern.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
Kconfig staging: iio: ad2s1200: Move driver out of staging 2018-05-20 12:17:48 +01:00
Makefile staging: iio: ad2s1200: Move driver out of staging 2018-05-20 12:17:48 +01:00