diff options
| -rw-r--r-- | drivers/tty/serial/samsung.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 19273e31d224..7196a3e586cf 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1209,6 +1209,18 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, ret = platform_get_irq(platdev, 1); if (ret > 0) ourport->tx_irq = ret; + /* + * DMA is currently supported only on DT platforms, if DMA properties + * are specified. + */ + if (platdev->dev.of_node && of_find_property(platdev->dev.of_node, + "dmas", NULL)) { + ourport->dma = devm_kzalloc(port->dev, + sizeof(*ourport->dma), + GFP_KERNEL); + if (!ourport->dma) + return -ENOMEM; + } ourport->clk = clk_get(&platdev->dev, "uart"); if (IS_ERR(ourport->clk)) { |