diff --git a/include/linux/pci.h b/include/linux/pci.h
index 99ea948..4e1f17d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1174,6 +1174,7 @@
 void pci_setup_bridge(struct pci_bus *bus);
 resource_size_t pcibios_window_alignment(struct pci_bus *bus,
 					 unsigned long type);
+resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno);
 
 #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0)
 #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1)