spi-topcliff-pch: Modify pci-bus number dynamically to get DMA device info

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index 4a5fafb8d57..4b32fd7d057 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -924,7 +924,8 @@ 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(2, PCI_DEVFN(12, 0));
+        dma_dev = pci_get_bus_and_slot(data->board_dat->pdev->bus->number,
+                                       PCI_DEVFN(12, 0));
 
         /* Set Tx DMA */
         param = &dma->param_tx;