driver core: delete virtual directory on class_unregister()

Class virtual directory is created as the need arises.
But it is not deleted when the class is unregistered.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/base/class.c b/drivers/base/class.c
index f098881f45b28129ec58aeae78e761fc4768e9bd..8bf2ca2e56b53ccb07a5ea8c32baec7fc1e51488 100644 (file)
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -163,6 +163,8 @@ int class_register(struct class * cls)
 void class_unregister(struct class * cls)
 {
        pr_debug("device class '%s': unregistering\n", cls->name);
+       if (cls->virtual_dir)
+               kobject_unregister(cls->virtual_dir);
        remove_class_attrs(cls);
        subsystem_unregister(&cls->subsys);
 }