cros_ec_get_host_command_version_mask() expects to receive
sizeof(struct ec_response_get_cmd_versions) from send_command(). The
payload is valid only if the return value is positive.
Return -EPROTO if send_command() returns 0 in
cros_ec_get_host_command_version_mask().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-19-tzungbi@kernel.org
goto exit;
}
+ if (ret == 0) {
+ ret = -EPROTO;
+ goto exit;
+ }
+
rver = (struct ec_response_get_cmd_versions *)msg->data;
*mask = rver->version_mask;
ret = 0;