diff options
| author | Fernando Yang <hagisf@usp.br> | 2024-06-03 21:07:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-07-05 10:38:07 +0300 |
| commit | bb5efe847d6a8626b1347cf70893fd517f7bb3e0 (patch) | |
| tree | af51a3e4aa778a036563e8316ad2cba0a0b7d936 | |
| parent | cf39681819ae39f96824c4de3d4e386bfb7b7eff (diff) | |
| download | linux-bb5efe847d6a8626b1347cf70893fd517f7bb3e0.tar.xz | |
iio: adc: ad7266: Fix variable checking bug
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>
| -rw-r--r-- | drivers/iio/adc/ad7266.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 468c2656d2be..98648c679a55 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -157,6 +157,8 @@ static int ad7266_read_raw(struct iio_dev *indio_dev, 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, |