fill_queue
err = fill_queue(port->in_vq, &port->inbuf_lock);
err = fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);
fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);
fill_queue(port->in_vq, &port->inbuf_lock);
fill_queue(pch);