driver core: bus: constify bus_register/unregister_notifier()

The bus_register_notifier() and bus_unregister_notifier() functions
should be taking a const * to bus_type, not just a * so fix that up.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230208111330.439504-19-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 719cd3a..0920fb1 100644 (file)
--- 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 22bf634..c0a034f 100644 (file)
--- 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);
 
 /**