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serial: 8250_dma: no need to sync RX buffer
[cascardo/linux.git]
/
drivers
/
tty
/
serial
/
8250
/
8250_dma.c
diff --git
a/drivers/tty/serial/8250/8250_dma.c
b/drivers/tty/serial/8250/8250_dma.c
index
21d01a4
..
b503071
100644
(file)
--- a/
drivers/tty/serial/8250/8250_dma.c
+++ b/
drivers/tty/serial/8250/8250_dma.c
@@
-54,9
+54,6
@@
static void __dma_rx_complete(void *param)
struct dma_tx_state state;
int count;
struct dma_tx_state state;
int count;
- dma_sync_single_for_cpu(dma->rxchan->device->dev, dma->rx_addr,
- dma->rx_size, DMA_FROM_DEVICE);
-
dma->rx_running = 0;
dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
dma->rx_running = 0;
dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
@@
-156,9
+153,6
@@
int serial8250_rx_dma(struct uart_8250_port *p, unsigned int iir)
dma->rx_cookie = dmaengine_submit(desc);
dma->rx_cookie = dmaengine_submit(desc);
- dma_sync_single_for_device(dma->rxchan->device->dev, dma->rx_addr,
- dma->rx_size, DMA_FROM_DEVICE);
-
dma_async_issue_pending(dma->rxchan);
return 0;
dma_async_issue_pending(dma->rxchan);
return 0;