diff --git a/drivers/pci/pcie/portdrv_bus.c b/drivers/pci/pcie/portdrv_bus.c
index 3e84b501e6a419ea2b7e28452983c36a8a127bff..3f0976868eda656c9a2441caae804c96f9cc3fac 100644
--- a/drivers/pci/pcie/portdrv_bus.c
+++ b/drivers/pci/pcie/portdrv_bus.c
@@ -24,6 +24,7 @@ struct bus_type pcie_port_bus_type = {
 	.suspend	= pcie_port_bus_suspend,
 	.resume		= pcie_port_bus_resume, 
 };
+EXPORT_SYMBOL_GPL(pcie_port_bus_type);
 
 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
 {