devc->last_req = req;
devc->last_req_pending = TRUE;
- if (serial_write_blocking(serial, buf, len, 0) < 0) {
+ if (serial_write_blocking(serial, buf, len,
+ serial_timeout(serial, len)) < 0) {
sr_err("Unable to send request.");
devc->last_req_pending = FALSE;
return SR_ERR;