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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2014-07-30 18:59:52 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-08-01 16:04:21 -0700
commit8368d6a2b73900507ad7632b8057532d0c2ee07f (patch)
treea1e03234554758bf9aafd16679b23845d86526bd /drivers/tty
parentc62fd1d9f094b1a97674374d09869df05cdc1025 (diff)
downloadop-kernel-dev-8368d6a2b73900507ad7632b8057532d0c2ee07f.zip
op-kernel-dev-8368d6a2b73900507ad7632b8057532d0c2ee07f.tar.gz
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: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/pch_uart.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 2f06e5a..ea4ffc2 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -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;
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