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 <[email protected]>
---
 drivers/spi/spi-topcliff-pch.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index af51d6a..47e7bde 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -874,8 +874,8 @@ static void pch_spi_request_dma(struct pch_spi_data *data, 
int bpw)
        dma_cap_set(DMA_SLAVE, mask);
 
        /* Get DMA's dev information */
-       dma_dev = pci_get_bus_and_slot(data->board_dat->pdev->bus->number,
-                                      PCI_DEVFN(12, 0));
+       dma_dev = pci_get_slot(data->board_dat->pdev->bus,
+                              PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
 
        /* Set Tx DMA */
        param = &dma->param_tx;
-- 
2.0.1

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