diff options
Diffstat (limited to 'kernel/drivers/tty/serial/8250/8250_dma.c')
| -rw-r--r-- | kernel/drivers/tty/serial/8250/8250_dma.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/kernel/drivers/tty/serial/8250/8250_dma.c b/kernel/drivers/tty/serial/8250/8250_dma.c index 21d01a491..78259d3c6 100644 --- a/kernel/drivers/tty/serial/8250/8250_dma.c +++ b/kernel/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); @@ -80,10 +77,6 @@ int serial8250_tx_dma(struct uart_8250_port *p) return 0; dma->tx_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE); - if (dma->tx_size < p->port.fifosize) { - ret = -EINVAL; - goto err; - } desc = dmaengine_prep_slave_single(dma->txchan, dma->tx_addr + xmit->tail, @@ -156,9 +149,6 @@ 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; |