diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 719cd3a1354c..0920fb117896 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -949,7 +949,7 @@ void bus_unregister(struct bus_type *bus)
 }
 EXPORT_SYMBOL_GPL(bus_unregister);
 
-int bus_register_notifier(struct bus_type *bus, struct notifier_block *nb)
+int bus_register_notifier(const struct bus_type *bus, struct notifier_block *nb)
 {
 	struct subsys_private *sp = bus_to_subsys(bus);
 	int retval;
@@ -963,7 +963,7 @@ int bus_register_notifier(struct bus_type *bus, struct notifier_block *nb)
 }
 EXPORT_SYMBOL_GPL(bus_register_notifier);
 
-int bus_unregister_notifier(struct bus_type *bus, struct notifier_block *nb)
+int bus_unregister_notifier(const struct bus_type *bus, struct notifier_block *nb)
 {
 	struct subsys_private *sp = bus_to_subsys(bus);
 	int retval;
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index 22bf63469275..c0a034ff59b7 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -246,9 +246,9 @@ void bus_sort_breadthfirst(struct bus_type *bus,
  */
 struct notifier_block;
 
-extern int bus_register_notifier(struct bus_type *bus,
+extern int bus_register_notifier(const struct bus_type *bus,
 				 struct notifier_block *nb);
-extern int bus_unregister_notifier(struct bus_type *bus,
+extern int bus_unregister_notifier(const struct bus_type *bus,
 				   struct notifier_block *nb);
 
 /**