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Commit 8368d6a2 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
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pch_uart: don't hardcode PCI slot to get DMA device 



The DMA is a function 0 of the multifunction device where SPI host is attached.
Thus, we may avoid to hardcode PCI slot number.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c62fd1d9

drivers/tty/serial/pch_uart.c

+4 −3
Original line number Diff line number Diff line
@@ -736,9 +736,10 @@ 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 */

	/* Get DMA's dev information */

	dma_dev = pci_get_slot(priv->pdev->bus,

			PCI_DEVFN(PCI_SLOT(priv->pdev->devfn), 0));



	/* Set Tx DMA */

	param = &priv->param_tx;

	param->dma_dev = &dma_dev->dev;