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serial: 8250_dma: terminate transfer explicitly when timeout 

There is no need to terminate transfer in the __dma_rx_complete() since it's
called at the end of transfer. Special case when serial timeout occurs is
handled separately where we have to terminate transfer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2014-11-28 16:17:11 +02:00 committed by Greg Kroah-Hartman
parent 9e5df9f88c
commit 9bdd6369aa
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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@ -59,7 +59,6 @@ static void __dma_rx_complete(void *param)
dma->rx_running = 0;
dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
dmaengine_terminate_all(dma->rxchan);
count = dma->rx_size - state.residue;
@ -131,6 +130,7 @@ int serial8250_rx_dma(struct uart_8250_port *p, unsigned int iir)
if (dma->rx_running) {
dmaengine_pause(dma->rxchan);
__dma_rx_complete(p);
dmaengine_terminate_all(dma->rxchan);
}
return -ETIMEDOUT;
default: