[PATCH] driver core: delete virtual directory on class_unregister()

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

Cc: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Akinobu Mita <[email protected]>

 drivers/base/class.c |    2 ++
 1 file changed, 2 insertions(+)

Index: work-fault-inject/drivers/base/class.c
--- work-fault-inject.orig/drivers/base/class.c
+++ work-fault-inject/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);
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