diff --git a/include/asm-arm/pci.h b/include/asm-arm/pci.h
index 38ea589..ead3ced 100644
--- a/include/asm-arm/pci.h
+++ b/include/asm-arm/pci.h
@@ -64,6 +64,19 @@
 pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 			struct pci_bus_region *region);
 
+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;
+}
+
 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
 {
 }