diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 1ccce1cd6aca45d183fb65841c8893cbe4fcb029..63d8e18fb6b143c512f92c4c0a1817bb884bcb04 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1432,6 +1432,11 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
+static int pci_bus_num_vf(struct device *dev)
+{
+	return pci_num_vf(to_pci_dev(dev));
+}
+
 struct bus_type pci_bus_type = {
 	.name		= "pci",
 	.match		= pci_bus_match,
@@ -1443,6 +1448,7 @@ struct bus_type pci_bus_type = {
 	.bus_groups	= pci_bus_groups,
 	.drv_groups	= pci_drv_groups,
 	.pm		= PCI_PM_OPS_PTR,
+	.num_vf		= pci_bus_num_vf,
 };
 EXPORT_SYMBOL(pci_bus_type);