diff --git a/include/asm-mips/pci.h b/include/asm-mips/pci.h
index 092900f..049f01f 100644
--- a/include/asm-mips/pci.h
+++ b/include/asm-mips/pci.h
@@ -167,4 +167,17 @@ static inline void pcibios_add_platform_entries(struct pci_dev *dev)
 /* Do platform specific device initialization at pci_enable_device() time */
 extern int pcibios_plat_dev_init(struct pci_dev *dev);
 
+static inline struct resource *
+pcibios_select_root(struct pci_dev *pdev, struct resource *res)
+{
+	struct resource *root = NULL;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &ioport_resource;
+	if (res->flags & IORESOURCE_MEM)
+		root = &iomem_resource;
+
+	return root;
+}
+
 #endif /* _ASM_PCI_H */