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-rw-r--r--kernel/locking/qspinlock.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
index 56af1fa9874d..d6c3b029bd93 100644
--- a/kernel/locking/qspinlock.c
+++ b/kernel/locking/qspinlock.c
@@ -483,10 +483,8 @@ locked:
/*
* contended path; wait for next if not observed yet, release.
*/
- if (!next) {
- while (!(next = READ_ONCE(node->next)))
- cpu_relax();
- }
+ if (!next)
+ next = smp_cond_load_relaxed(&node->next, (VAL));
arch_mcs_spin_unlock_contended(&next->locked);
pv_kick_node(lock, next);