[PATCH v2] locking/rtmutex: Fix incorrect spinning condition

[Zqiang]

When the lock owner is on CPU and not need resched, the current waiter
need to be checked, if it not longer top the waiter, stop spinning.

Fixes: c3123c431447 ("locking/rtmutex: Dont dereference waiter lockless")
Signed-off-by: Zqiang <qiang1.zhang@xxxxxxxxx>
---
 v1->v2:
 Modify description information.

 kernel/locking/rtmutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 0c1f2e3f019a..8555c4efe97c 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1383,7 +1383,7 @@ static bool rtmutex_spin_on_owner(struct rt_mutex_base *lock,
 		 *  - the VCPU on which owner runs is preempted
 		 */
 		if (!owner_on_cpu(owner) || need_resched() ||
-		    rt_mutex_waiter_is_top_waiter(lock, waiter)) {
+		    !rt_mutex_waiter_is_top_waiter(lock, waiter)) {
 			res = false;
 			break;
 		}
-- 
2.25.1