futex: Use pi_state_update_owner() in put_pi_state()

From: Thomas Gleixner <tglx@linutronix.de>

[ Upstream commit 6ccc84f917d33312eb2846bd7b567639f585ad6d ]

No point in open coding it. This way it gains the extra sanity checks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/futex.c b/kernel/futex.c
index bf40921ef1200aba80efd53521e77c110282d1ed..d9bec8eb609695125e677104a7cf87922c1c85fe 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -874,10 +874,7 @@ static void free_pi_state(struct futex_pi_state *pi_state)
         * and has cleaned up the pi_state already
         */
        if (pi_state->owner) {
-               raw_spin_lock_irq(&pi_state->owner->pi_lock);
-               list_del_init(&pi_state->list);
-               raw_spin_unlock_irq(&pi_state->owner->pi_lock);
-
+               pi_state_update_owner(pi_state, NULL);
                rt_mutex_proxy_unlock(&pi_state->pi_mutex);
        }