fix: Fix accidentally close PDMA used by other devices when close the serial port
@@ -803,8 +803,10 @@ static rt_err_t nu_uart_control(struct rt_serial_device *serial, int cmd, void *
rt_hw_interrupt_mask(psNuUart->irqn);
#if defined(RT_SERIAL_USING_DMA)
+ if (psNuUart->dma_flag != 0) {
nu_pdma_channel_terminate(psNuUart->pdma_chanid_tx);
nu_pdma_channel_terminate(psNuUart->pdma_chanid_rx);
+ }
#endif
/* Close UART port */
