ASoC: cros_ec_codec: remove null pointer dereference warning
Cppcheck complains of a possible issue:
sound/soc/codecs/cros_ec_codec.c:98:10: warning: Possible null pointer
dereference: in [nullPointer]
memcpy(in, msg->data, insize);
^
sound/soc/codecs/cros_ec_codec.c:162:34: note: Calling function
'send_ec_host_command', 5th argument 'NULL' value is 0
(uint8_t *)&p, sizeof(p), NULL, 0);
^
sound/soc/codecs/cros_ec_codec.c:98:10: note: Null pointer dereference
memcpy(in, msg->data, insize);
^
In practice the access to the pointer is protected by another
argument, but this is likely to fool other static analysis tools. Add
a test to avoid doing the memcpy if the pointer is NULL or the size is
zero.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210312182246.5153-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed
