From: Fernando Yang <hagisf@xxxxxx>
commit a2b86132955268b2a1703082fbc2d4832fc001b8 upstream.
The ret variable was not checked after iio_device_release_direct_mode(),
which could possibly cause errors
Fixes: c70df20e3159 ("iio: adc: ad7266: claim direct mode during sensor read")
Signed-off-by: Fernando Yang <hagisf@xxxxxx>
Link: https://lore.kernel.org/r/20240603180757.8560-1-hagisf@xxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/ad7266.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -160,6 +160,8 @@ static int ad7266_read_raw(struct iio_de
ret = ad7266_read_single(st, val, chan->address);
iio_device_release_direct_mode(indio_dev);
+ if (ret < 0)
+ return ret;
*val = (*val >> 2) & 0xfff;
if (chan->scan_type.sign == 's')
*val = sign_extend32(*val, 11);
Patches currently in stable-queue which might be from hagisf@xxxxxx are
queue-4.19/iio-adc-ad7266-fix-variable-checking-bug.patch
