ret = ustcomm_send_app_cmd(sock, &lum, &lur);
if (ret)
return ret;
+ if (lur.ret_code != USTCOMM_OK) {
+ DBG("Return code: %s", ustcomm_get_readable_code(lur.ret_code));
+ return -EINVAL;
+ }
len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter));
if (len != sizeof(*iter)) {
return -EINVAL;