kobject: convert configfs to use kobject_create

We don't need a kset here, a simple kobject will do just fine, so
dynamically create the kobject and use it.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

fs/configfs/mount.c

@@ -128,7 +128,7 @@ void configfs_release_fs(void)
 }
 
 
-static decl_subsys(config, NULL);
+static struct kobject *config_kobj;
 
 static int __init configfs_init(void)
 {
@@ -140,9 +140,8 @@ static int __init configfs_init(void)
 	if (!configfs_dir_cachep)
 		goto out;
 
-	config_subsys.kobj.kset = &kernel_subsys;
-	err = subsystem_register(&config_subsys);
-	if (err) {
+	config_kobj = kobject_create_and_add("config", &kernel_subsys.kobj);
+	if (!config_kobj) {
 		kmem_cache_destroy(configfs_dir_cachep);
 		configfs_dir_cachep = NULL;
 		goto out;
@@ -151,7 +150,7 @@ static int __init configfs_init(void)
 	err = register_filesystem(&configfs_fs_type);
 	if (err) {
 		printk(KERN_ERR "configfs: Unable to register filesystem!\n");
-		subsystem_unregister(&config_subsys);
+		kobject_unregister(config_kobj);
 		kmem_cache_destroy(configfs_dir_cachep);
 		configfs_dir_cachep = NULL;
 		goto out;
@@ -160,7 +159,7 @@ static int __init configfs_init(void)
 	err = configfs_inode_init();
 	if (err) {
 		unregister_filesystem(&configfs_fs_type);
-		subsystem_unregister(&config_subsys);
+		kobject_unregister(config_kobj);
 		kmem_cache_destroy(configfs_dir_cachep);
 		configfs_dir_cachep = NULL;
 	}
@@ -171,7 +170,7 @@ out:
 static void __exit configfs_exit(void)
 {
 	unregister_filesystem(&configfs_fs_type);
-	subsystem_unregister(&config_subsys);
+	kobject_unregister(config_kobj);
 	kmem_cache_destroy(configfs_dir_cachep);
 	configfs_dir_cachep = NULL;
 	configfs_inode_exit();