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path: root/drivers/tty/serial/8250/8250_omap.c
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Diffstat (limited to 'drivers/tty/serial/8250/8250_omap.c')
-rw-r--r--drivers/tty/serial/8250/8250_omap.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 1395ff7b03e7..c13b48ad7cdb 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -755,7 +755,10 @@ static void __dma_rx_do_complete(struct uart_8250_port *p)
dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
count = dma->rx_size - state.residue;
-
+ if (count < dma->rx_size)
+ dmaengine_terminate_async(dma->rxchan);
+ if (!count)
+ goto unlock;
ret = tty_insert_flip_string(tty_port, dma->rx_buf, count);
p->port.icount.rx += ret;
@@ -817,7 +820,6 @@ static void omap_8250_rx_dma_flush(struct uart_8250_port *p)
spin_unlock_irqrestore(&priv->rx_dma_lock, flags);
__dma_rx_do_complete(p);
- dmaengine_terminate_all(dma->rxchan);
}
static int omap_8250_rx_dma(struct uart_8250_port *p)