Function rt_bypass_upper_unregister

components/drivers/serial/bypass.c:303–308

}

rt_err_t rt_bypass_upper_unregister(struct rt_serial_device* serial, rt_uint8_t level)
{
    if (!serial->bypass || !serial->bypass->upper_h)
        return -RT_ERROR;
    return rt_bypass_unregister(serial->bypass->upper_h, level);
}

rt_err_t rt_bypass_lower_unregister(struct rt_serial_device* serial, rt_uint8_t level)
{