From: Heikki Krogerus Date: Wed, 10 Apr 2013 13:58:26 +0000 (+0300) Subject: serial: 8250_dma: Use dmaengine helpers to get the slave channels X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e4fb3b88ebf21e6127ed0e91336752352ba0931e;p=linux-beck.git serial: 8250_dma: Use dmaengine helpers to get the slave channels The helper functions in dmaengine API allow the drivers to request slave channels without the filter parameters. They will attempt to extract the needed DMA client information from DT or ACPI, but if such information is not available the filter parameters can still be used. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 66430614510a..fdb6139e8c17 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -156,14 +156,18 @@ int serial8250_request_dma(struct uart_8250_port *p) dma_cap_set(DMA_SLAVE, mask); /* Get a channel for RX */ - dma->rxchan = dma_request_channel(mask, dma->fn, dma->rx_param); + dma->rxchan = dma_request_slave_channel_compat(mask, + dma->fn, dma->rx_param, + p->port.dev, "rx"); if (!dma->rxchan) return -ENODEV; dmaengine_slave_config(dma->rxchan, &dma->rxconf); /* Get a channel for TX */ - dma->txchan = dma_request_channel(mask, dma->fn, dma->tx_param); + dma->txchan = dma_request_slave_channel_compat(mask, + dma->fn, dma->tx_param, + p->port.dev, "tx"); if (!dma->txchan) { dma_release_channel(dma->rxchan); return -ENODEV;