From: Tom Rix trix@redhat.com
commit f71e41e23e129640f620b65fc362a6da02580310 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 2 ++ 1 file changed, 2 insertions(+)
--- 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_s
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);