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| author | John Keeping <jkeeping@inmusicbrands.com> | 2025-02-24 12:18:30 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:30:54 +0200 |
| commit | 6f18079dae7b3063567f9b3331d54ab12ef97327 (patch) | |
| tree | c216ed37df5cd2afb2e54b0e569090704e919750 /drivers/tty | |
| parent | 9dfaf4d723c62bda8d9d1340e2e78acf0c190439 (diff) | |
| download | linux-6f18079dae7b3063567f9b3331d54ab12ef97327.tar.gz linux-6f18079dae7b3063567f9b3331d54ab12ef97327.tar.bz2 linux-6f18079dae7b3063567f9b3331d54ab12ef97327.zip | |
serial: 8250_dma: terminate correct DMA in tx_dma_flush()
commit a26503092c75abba70a0be2aa01145ecf90c2a22 upstream.
When flushing transmit side DMA, it is the transmit channel that should
be terminated, not the receive channel.
Fixes: 9e512eaaf8f40 ("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>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index cbaac0a5137d..47ae1fbe805b 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -148,7 +148,7 @@ 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) |