bus->subsys.kobj.kset = bus_kset;
        bus->subsys.kobj.ktype = &bus_ktype;
 
-       retval = subsystem_register(&bus->subsys);
+       retval = kset_register(&bus->subsys);
        if (retval)
                goto out;
 
 bus_devices_fail:
        bus_remove_file(bus, &bus_attr_uevent);
 bus_uevent_fail:
-       subsystem_unregister(&bus->subsys);
+       kset_unregister(&bus->subsys);
 out:
        return retval;
 }
        kset_unregister(bus->drivers_kset);
        kset_unregister(bus->devices_kset);
        bus_remove_file(bus, &bus_attr_uevent);
-       subsystem_unregister(&bus->subsys);
+       kset_unregister(&bus->subsys);
 }
 
 int bus_register_notifier(struct bus_type *bus, struct notifier_block *nb)
 
        cls->subsys.kobj.kset = class_kset;
        cls->subsys.kobj.ktype = &class_ktype;
 
-       error = subsystem_register(&cls->subsys);
+       error = kset_register(&cls->subsys);
        if (!error) {
                error = add_class_attrs(class_get(cls));
                class_put(cls);
 {
        pr_debug("device class '%s': unregistering\n", cls->name);
        remove_class_attrs(cls);
-       subsystem_unregister(&cls->subsys);
+       kset_unregister(&cls->subsys);
 }
 
 static void class_create_release(struct class *cls)
 
 /* The global /sys/firmware/ kobject for people to chain off of */
 extern struct kobject *firmware_kobj;
 
-extern int __must_check subsystem_register(struct kset *);
-extern void subsystem_unregister(struct kset *);
-
 #if defined(CONFIG_HOTPLUG)
 int kobject_uevent(struct kobject *kobj, enum kobject_action action);
 int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 
        return ret;
 }
 
-int subsystem_register(struct kset *s)
-{
-       return kset_register(s);
-}
-
-void subsystem_unregister(struct kset *s)
-{
-       kset_unregister(s);
-}
-
 static void kset_release(struct kobject *kobj)
 {
        struct kset *kset = container_of(kobj, struct kset, kobj);
 
 EXPORT_SYMBOL(kset_register);
 EXPORT_SYMBOL(kset_unregister);
-
-EXPORT_SYMBOL(subsystem_register);
-EXPORT_SYMBOL(subsystem_unregister);