diff --git a/include/linux/pci.h b/include/linux/pci.h
index 50d9438..6fb335b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -726,6 +726,9 @@
 
 /* Functions for PCI Hotplug drivers to use */
 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
+#ifdef CONFIG_HOTPLUG
+unsigned int pci_rescan_bus(struct pci_bus *bus);
+#endif
 
 /* Vital product data routines */
 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);