Commit 38cd4cee authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Thomas Gleixner
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timers: Add sparse annotation for timer_sync_wait_running(). 



timer_sync_wait_running() first releases two locks and then acquires
them again. This is unexpected and sparse complains about it.

Add sparse annotation for timer_sync_wait_running() to note that the
locking is expected.

Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240812105326.2240000-2-bigeasy@linutronix.de
parent 9a7b0158

kernel/time/timer.c

+2 −0
Original line number Diff line number Diff line
@@ -1561,6 +1561,8 @@ static inline void timer_base_unlock_expiry(struct timer_base *base) 
 * the waiter to acquire the lock and make progress.

 */

static void timer_sync_wait_running(struct timer_base *base)

	__releases(&base->lock) __releases(&base->expiry_lock)

	__acquires(&base->expiry_lock) __acquires(&base->lock)

{

	if (atomic_read(&base->timer_waiters)) {

		raw_spin_unlock_irq(&base->lock);