Function rt_dma_calc_recved_len

components/drivers/serial/dev_serial.c:445–448

* Calculate DMA received data length. * * @param serial serial device * * @return length */

 * @return length
 */
static rt_ssize_t rt_dma_calc_recved_len(struct rt_serial_device *serial)
{
    return _serial_fifo_calc_recved_len(serial);
}

/**
 * Read data finish by DMA mode then update the get index for receive fifo.