bcache: remove useless parameter of bch_debug_init()

Parameter "struct kobject *kobj" in bch_debug_init() is useless,
remove it in this patch.
Signed-off-by: Dongbo Cao <cdbdyx@163.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/md/bcache/bcache.h

@@ -1004,7 +1004,7 @@ void bch_open_buckets_free(struct cache_set *c);
 int bch_cache_allocator_start(struct cache *ca);
 
 void bch_debug_exit(void);
-void bch_debug_init(struct kobject *kobj);
+void bch_debug_init(void);
 void bch_request_exit(void);
 int bch_request_init(void);
 

drivers/md/bcache/debug.c

@@ -253,7 +253,7 @@ void bch_debug_exit(void)
 		debugfs_remove_recursive(bcache_debug);
 }
 
-void __init bch_debug_init(struct kobject *kobj)
+void __init bch_debug_init(void)
 {
 	/*
 	 * it is unnecessary to check return value of

drivers/md/bcache/super.c

@@ -2389,7 +2389,7 @@ static int __init bcache_init(void)
 	    sysfs_create_files(bcache_kobj, files))
 		goto err;
 
-	bch_debug_init(bcache_kobj);
+	bch_debug_init();
 	closure_debug_init();
 
 	return 0;