iio:imu:st_lsm6dsx: check st_lsm6dsx_shub_read_output return

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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: c91c1c844e ("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>

...

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Tom Rix 2020-08-09 10:55:51 -07:00 • committed by Jonathan Cameron

parent d390ff735d

commit f71e41e23e

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drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c

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