From: Andrei Vagin avagin@gmail.com
commit 07d7e12091f4ab869cc6a4bb276399057e73b0b3 upstream.
To calculate a remaining time, it's required to subtract the current time from the expiration time. In alarm_timer_remaining() the arguments of ktime_sub are swapped.
Fixes: d653d8457c76 ("alarmtimer: Implement remaining callback") Signed-off-by: Andrei Vagin avagin@gmail.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Mukesh Ojha mojha@codeaurora.org Cc: Stephen Boyd sboyd@kernel.org Cc: John Stultz john.stultz@linaro.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190408041542.26338-1-avagin@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- kernel/time/alarmtimer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -594,7 +594,7 @@ static ktime_t alarm_timer_remaining(str { struct alarm *alarm = &timr->it.alarm.alarmtimer;
- return ktime_sub(now, alarm->node.expires); + return ktime_sub(alarm->node.expires, now); }
/**