PCI core API pci_dev_id() can be used to get the BDF number for a pci
device. We don't need to compose it mannually. Use pci_dev_id() to
simplify the code a little bit.

Signed-off-by: Jialin Zhang <redacted>
---
 drivers/dma/ioat/dca.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c
index 289c59ed74b9..17f6b6367113 100644
--- a/drivers/dma/ioat/dca.c
+++ b/drivers/dma/ioat/dca.c

@@ -51,7 +51,7 @@
 /* pack PCI B/D/F into a u16 */
 static inline u16 dcaid_from_pcidev(struct pci_dev *pci)
 {
-	return (pci->bus->number << 8) | pci->devfn;
+	return pci_dev_id(pci);
 }
 
 static int dca_enabled_in_bios(struct pci_dev *pdev)

-- 
2.25.1