diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 3c9834d80850..adfad4fd6a13 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -717,7 +717,7 @@ static void pci_release_dev(struct device *dev)
  * reading the dword at 0x100 which must either be 0 or a valid extended
  * capability header.
  */
-static int pci_cfg_space_size(struct pci_dev *dev)
+int pci_cfg_space_size(struct pci_dev *dev)
 {
 	int pos;
 	u32 status;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b32f70fe2dbd..d0e003926744 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -449,6 +449,7 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass
 
 void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
 		  void *userdata);
+int pci_cfg_space_size(struct pci_dev *dev);
 
 /* kmem_cache style wrapper around pci_alloc_consistent() */