diff --git a/include/asm-alpha/pci.h b/include/asm-alpha/pci.h
index f681e67..4e115f3 100644
--- a/include/asm-alpha/pci.h
+++ b/include/asm-alpha/pci.h
@@ -254,6 +254,19 @@
 extern void 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;
+}
+
 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
 
 static inline int pci_proc_domain(struct pci_bus *bus)
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)
 {
 }
diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
index ee1d8b5..c36a77d 100644
--- a/include/asm-generic/pci.h
+++ b/include/asm-generic/pci.h
@@ -30,6 +30,19 @@
 	res->end = region->end;
 }
 
+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;
+}
+
 #define pcibios_scan_all_fns(a, b)	0
 
 #ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
diff --git a/include/asm-ia64/pci.h b/include/asm-ia64/pci.h
index dba9f22..ef616fd 100644
--- a/include/asm-ia64/pci.h
+++ b/include/asm-ia64/pci.h
@@ -156,6 +156,19 @@
 extern void 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;
+}
+
 #define pcibios_scan_all_fns(a, b)	0
 
 #endif /* _ASM_IA64_PCI_H */
diff --git a/include/asm-parisc/pci.h b/include/asm-parisc/pci.h
index 98d79a3..d0b761f 100644
--- a/include/asm-parisc/pci.h
+++ b/include/asm-parisc/pci.h
@@ -257,6 +257,19 @@
 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)
 {
 }
diff --git a/include/asm-ppc/pci.h b/include/asm-ppc/pci.h
index a811e44..9dd06cd 100644
--- a/include/asm-ppc/pci.h
+++ b/include/asm-ppc/pci.h
@@ -109,6 +109,19 @@
 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;
+}
+
 extern void pcibios_add_platform_entries(struct pci_dev *dev);
 
 struct file;
diff --git a/include/asm-ppc64/pci.h b/include/asm-ppc64/pci.h
index 4d05745..a88bbfc 100644
--- a/include/asm-ppc64/pci.h
+++ b/include/asm-ppc64/pci.h
@@ -138,6 +138,19 @@
 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;
+}
+
 extern int
 unmap_bus_range(struct pci_bus *bus);
 
diff --git a/include/asm-sparc64/pci.h b/include/asm-sparc64/pci.h
index a4ab0ec..89bd71b 100644
--- a/include/asm-sparc64/pci.h
+++ b/include/asm-sparc64/pci.h
@@ -269,6 +269,8 @@
 pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 			struct pci_bus_region *region);
 
+extern struct resource *pcibios_select_root(struct pci_dev *, struct resource *);
+
 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
 {
 }