RX buffer is allocated from DMA coherent memory. Thus there is no need to call DMA sync API for it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> --- drivers/tty/serial/8250/8250_dma.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 21d01a4..b503071 100644 --- 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; - 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); @@ -156,9 +153,6 @@ int serial8250_rx_dma(struct uart_8250_port *p, unsigned int iir) 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; -- 2.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
