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path: root/drivers/base/bus.c
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Diffstat (limited to 'drivers/base/bus.c')
-rw-r--r--drivers/base/bus.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 7d8a7ce73fb3..ed3e8a2be64a 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -724,6 +724,8 @@ int bus_register(struct bus_type * bus)
{
int retval;
+ BLOCKING_INIT_NOTIFIER_HEAD(&bus->bus_notifier);
+
retval = kobject_set_name(&bus->subsys.kset.kobj, "%s", bus->name);
if (retval)
goto out;
@@ -782,6 +784,18 @@ void bus_unregister(struct bus_type * bus)
subsystem_unregister(&bus->subsys);
}
+int bus_register_notifier(struct bus_type *bus, struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&bus->bus_notifier, nb);
+}
+EXPORT_SYMBOL_GPL(bus_register_notifier);
+
+int bus_unregister_notifier(struct bus_type *bus, struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&bus->bus_notifier, nb);
+}
+EXPORT_SYMBOL_GPL(bus_unregister_notifier);
+
int __init buses_init(void)
{
return subsystem_register(&bus_subsys);