4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fernando Yang hagisf@usp.br
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@usp.br Link: https://lore.kernel.org/r/20240603180757.8560-1-hagisf@usp.br Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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);