dmaengine: ioatdma: use pci_dev_id() to simplify the code

Jialin Zhang · vinodkoul · commit c65029b13b67 · 2023-08-21T18:39:25.000+05:30
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 <zhangjialin11@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20230815023821.3518007-1-zhangjialin11@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
diff --git 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)

Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@`
`51`	`51`	`/* pack PCI B/D/F into a u16 */`
`52`	`52`	`static inline u16 dcaid_from_pcidev(struct pci_dev *pci)`
`53`	`53`	`{`
`54`		`- return (pci->bus->number << 8) \| pci->devfn;`
	`54`	`+ return pci_dev_id(pci);`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`static int dca_enabled_in_bios(struct pci_dev *pdev)`