Driver core: Fix cleanup when failing device_add().

Driver core: Fix cleanup when failing device_add().

 - Don't call cleanup_device_parent() if we didn't call setup_parent().
 - dev->kobj.parent may be NULL when cleanup_device_parent() is called,
   so we need to handle glue_dir == NULL in cleanup_glue_dir().

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/base/core.c

@@ -621,7 +621,8 @@ static struct kobject *get_device_parent(struct device *dev,
 static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
 {
 	/* see if we live in a "glue" directory */
-	if (!dev->class || glue_dir->kset != &dev->class->class_dirs)
+	if (!glue_dir || !dev->class ||
+	    glue_dir->kset != &dev->class->class_dirs)
 		return;
 
 	kobject_put(glue_dir);
@@ -773,7 +774,7 @@ int device_add(struct device *dev)
 	dev = get_device(dev);
 	if (!dev || !strlen(dev->bus_id)) {
 		error = -EINVAL;
-		goto Error;
+		goto Done;
 	}
 
 	pr_debug("device: '%s': %s\n", dev->bus_id, __FUNCTION__);