[tip:locking/core] locking/lockdep: Remove a superfluous INIT_LIST_HEAD() statement

From: tip-bot for Bart Van Assche
Date: Tue Dec 11 2018 - 10:29:07 EST

Commit-ID: a66b6922dc6a5ece60ea9326153da3b062977a4d
Gitweb: https://git.kernel.org/tip/a66b6922dc6a5ece60ea9326153da3b062977a4d
Author: Bart Van Assche <bvanassche@xxxxxxx>
AuthorDate: Thu, 6 Dec 2018 17:11:35 -0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 11 Dec 2018 14:54:54 +0100

locking/lockdep: Remove a superfluous INIT_LIST_HEAD() statement

Initializing a list entry just before it is passed to list_add_tail_rcu()
is not necessary because list_add_tail_rcu() overwrites the next and prev
pointers anyway. Hence remove the INIT_LIST_HEAD() statement.

Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Waiman Long <longman@xxxxxxxxxx>
Cc: johannes.berg@xxxxxxxxx
Cc: tj@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20181207011148.251812-12-bvanassche@xxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
kernel/locking/lockdep.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 81388d028ac7..346b5a1fd062 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -792,7 +792,6 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
class->key = key;
class->name = lock->name;
class->subclass = subclass;
- INIT_LIST_HEAD(&class->lock_entry);
class->name_version = count_matching_names(class);