1 files changed, 4 insertions, 3 deletions

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index f3077c0ab181..69f4efec3449 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -51,6 +51,8 @@
 
 /* Data structures. */
 
+static struct lock_class_key rcu_root_class;
+
 #define RCU_STATE_INITIALIZER(name) { \
         .level = { &name.node[0] }, \
         .levelcnt = { \
@@ -1685,8 +1687,7 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                 cpustride *= rsp->levelspread[i];
                 rnp = rsp->level[i];
                 for (j = 0; j < rsp->levelcnt[i]; j++, rnp++) {
-                        if (rnp != rcu_get_root(rsp))
-                                spin_lock_init(&rnp->lock);
+                        spin_lock_init(&rnp->lock);
                         rnp->gpnum = 0;
                         rnp->qsmask = 0;
                         rnp->qsmaskinit = 0;
@@ -1709,7 +1710,7 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                         INIT_LIST_HEAD(&rnp->blocked_tasks[1]);
                 }
         }
-        spin_lock_init(&rcu_get_root(rsp)->lock);
+        lockdep_set_class(&rcu_get_root(rsp)->lock, &rcu_root_class);
 }
 
 /*