sparc/PCI: Use dev_is_pci() to identify PCI devices

Use dev_is_pci() instead of checking bus type directly.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

arch/sparc/kernel/iommu.c

@@ -854,7 +854,7 @@ int dma_supported(struct device *dev, u64 device_mask)
 		return 1;
 
 #ifdef CONFIG_PCI
-	if (dev->bus == &pci_bus_type)
+	if (dev_is_pci(dev))
 		return pci64_dma_supported(to_pci_dev(dev), device_mask);
 #endif
 

arch/sparc/kernel/ioport.c

@@ -666,10 +666,9 @@ EXPORT_SYMBOL(dma_ops);
  */
 int dma_supported(struct device *dev, u64 mask)
 {
-#ifdef CONFIG_PCI
-	if (dev->bus == &pci_bus_type)
+	if (dev_is_pci(dev))
 		return 1;
-#endif
+
 	return 0;
 }
 EXPORT_SYMBOL(dma_supported);