static int mxs_auart_dma_init(struct mxs_auart_port *s)
{
+ struct dma_chan *chan;
+
if (auart_dma_enabled(s))
return 0;
/* init for RX */
- s->rx_dma_chan = dma_request_slave_channel(s->dev, "rx");
- if (!s->rx_dma_chan)
+ chan = dma_request_chan(s->dev, "rx");
+ if (IS_ERR(chan))
goto err_out;
+ s->rx_dma_chan = chan;
+
s->rx_dma_buf = kzalloc(UART_XMIT_SIZE, GFP_KERNEL | GFP_DMA);
if (!s->rx_dma_buf)
goto err_out;
/* init for TX */
- s->tx_dma_chan = dma_request_slave_channel(s->dev, "tx");
- if (!s->tx_dma_chan)
+ chan = dma_request_chan(s->dev, "tx");
+ if (IS_ERR(chan))
goto err_out;
+ s->tx_dma_chan = chan;
+
s->tx_dma_buf = kzalloc(UART_XMIT_SIZE, GFP_KERNEL | GFP_DMA);
if (!s->tx_dma_buf)
goto err_out;