From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 5 Dec 2011 20:20:23 +0000 (+0100)
Subject: alarmtimers: Fix time comparison
X-Git-Tag: firefly_0821_release~7541^2~2133
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=612e5dbc550f30c787e40b958d351720e72091c6;p=firefly-linux-kernel-4.4.55.git

alarmtimers: Fix time comparison

commit c9c024b3f3e07d087974db4c0dc46217fff3a6c0 upstream.

The expiry function compares the timer against current time and does
not expire the timer when the expiry time is >= now. That's wrong. If
the timer is set for now, then it must expire.

Make the condition expiry > now for breaking out the loop.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index ea5e1a928d5b..8b70c76910aa 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -181,7 +181,7 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
 		struct alarm *alarm;
 		ktime_t expired = next->expires;
 
-		if (expired.tv64 >= now.tv64)
+		if (expired.tv64 > now.tv64)
 			break;
 
 		alarm = container_of(next, struct alarm, node);