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[ALSA] system timer: fix lost ticks correction adjustment 

Fix the adjustment of the lost ticks correction variable in the case
when the correction has been fully taken into account in the next timer
expiration value.  Subtracting the scheduled ticks value would result in
an underflow.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Clemens Ladisch 2006-07-17 16:50:56 +02:00 committed by Jaroslav Kysela
parent 7bc5ba7e02
commit 17f48ec3f1
1 changed files with 1 additions and 1 deletions
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2
sound/core/timer.c
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@ -987,7 +987,7 @@ static int snd_timer_s_start(struct snd_timer * timer)
njiff++;
} else {
njiff += timer->sticks - priv->correction;
priv->correction -= timer->sticks;
priv->correction = 0;
}
priv->last_expires = priv->tlist.expires = njiff;
add_timer(&priv->tlist);