[PATCH v1 2/3] pch_uart: use pci_get_dma_device() helper

[Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>]

Since we have pci_get_dma_device() public we may use it in the drivers. It
considers the function 0 as a DMA controller.

Signed-off-by: Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/tty/serial/pch_uart.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 2f06e5a..c38fdee 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -736,9 +736,8 @@ static void pch_request_dma(struct uart_port *port)
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	dma_dev = pci_get_bus_and_slot(priv->pdev->bus->number,
-				       PCI_DEVFN(0xa, 0)); /* Get DMA's dev
-								information */
+	dma_dev = pci_get_dma_device(priv->pdev); /* Get DMA's dev information */
+
 	/* Set Tx DMA */
 	param = &priv->param_tx;
 	param->dma_dev = &dma_dev->dev;
-- 
2.0.1

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