diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index fe89a982a3da85a61324d26d3e86aa337c20e61a..490031fd21084c98a2f194098f961080de261e1a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1617,7 +1617,7 @@ static int pcie_bus_configure_set(struct pci_dev *dev, void *data)
  */
 void pcie_bus_configure_settings(struct pci_bus *bus)
 {
-	u8 smpss;
+	u8 smpss = 0;
 
 	if (!bus->self)
 		return;