diff options
| author | Tom Rix <trix@redhat.com> | 2020-08-09 10:55:51 -0700 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-09-21 20:01:50 +0100 |
| commit | f71e41e23e129640f620b65fc362a6da02580310 (patch) | |
| tree | d80b4f9b83aeed1975665503928de02fb5c0381c /drivers/iio | |
| parent | d390ff735d0a61e4703bf124866ef6d4be7fdc64 (diff) | |
| download | linux-f71e41e23e129640f620b65fc362a6da02580310.tar.gz | |
iio:imu:st_lsm6dsx: check st_lsm6dsx_shub_read_output return
Potential error return is not checked. This can lead to use
of undefined data.
Detected by clang static analysis.
st_lsm6dsx_shub.c:540:8: warning: Assigned value is garbage or undefined
*val = (s16)le16_to_cpu(*((__le16 *)data));
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fixes: c91c1c844ebd ("iio: imu: st_lsm6dsx: add i2c embedded controller support")
Signed-off-by: Tom Rix <trix@redhat.com
Cc: <Stable@vger.kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200809175551.6794-1-trix@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c index ed83471dc7dd..8c8d8870ca07 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c @@ -313,6 +313,8 @@ st_lsm6dsx_shub_read(struct st_lsm6dsx_sensor *sensor, u8 addr, err = st_lsm6dsx_shub_read_output(hw, data, len & ST_LS6DSX_READ_OP_MASK); + if (err < 0) + return err; st_lsm6dsx_shub_master_enable(sensor, false); |