diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index a68dc61..c19776a 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -22,9 +22,9 @@ static struct pci_bus *find_pci_root_bus(struct pci_dev *dev)
 
 static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev)
 {
-	struct pci_bus *bus = find_pci_root_bus(dev);
+	struct pci_bus *root_bus = find_pci_root_bus(dev);
 
-	return to_pci_host_bridge(bus->bridge);
+	return to_pci_host_bridge(root_bus->bridge);
 }
 
 void pci_set_host_bridge_release(struct pci_host_bridge *bridge,