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serial: 8250_dma: terminate correct DMA in tx_dma_flush()

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When flushing transmit side DMA, it is the transmit channel that should
be terminated, not the receive channel.

Fixes: 9e512eaaf8 ("serial: 8250: Fix fifo underflow on flush")
Cc: stable <stable@kernel.org>
Reported-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: John Keeping <jkeeping@inmusicbrands.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250224121831.1429323-1-jkeeping@inmusicbrands.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John Keeping 2025-02-24 12:18:30 +00:00 committed by Greg Kroah-Hartman
parent 1d9ac5bd4e
commit a26503092c
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/8250/8250_dma.c
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@ -162,7 +162,7 @@ void serial8250_tx_dma_flush(struct uart_8250_port *p)
*/
dma->tx_size = 0;
dmaengine_terminate_async(dma->rxchan);
dmaengine_terminate_async(dma->txchan);
}
int serial8250_rx_dma(struct uart_8250_port *p)