__send_control_msg
__send_control_msg(portdev, id, VIRTIO_CONSOLE_PORT_READY, 0);
__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,
__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,
return __send_control_msg(port->portdev, port->id, event, value);