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Date: Wed, 9 Mar 2022 19:07:05 +0800 From: huteng.ht@...edance.com To: peterz@...radead.org, mingo@...hat.com, will@...nel.org Cc: linux-kernel@...r.kernel.org, huteng.ht@...edance.com Subject: [PATCH] kernel/locking: Return proper value in __down_common() From: Teng Hu <huteng.ht@...edance.com> Return -ETIME when a process waiting on a semaphore woken up due to timedout, while return -EINTR when woken up by a signal. Signed-off-by: Teng Hu <huteng.ht@...edance.com> --- kernel/locking/semaphore.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/locking/semaphore.c b/kernel/locking/semaphore.c index 9ee381e4d2a4..97ad6a747d2f 100644 --- a/kernel/locking/semaphore.c +++ b/kernel/locking/semaphore.c @@ -225,6 +225,8 @@ static inline int __sched __down_common(struct semaphore *sem, long state, raw_spin_lock_irq(&sem->lock); if (waiter.up) return 0; + if (timeout) + goto interrupted; } timed_out: -- 2.20.1
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