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[ALSA] system timer: accumulate correction for multiple lost ticks 

When multiple timer interrupts arrive too late, correct for all delays
instead of ignoring the earlier ones.

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 16:51:37 +02:00 committed by Jaroslav Kysela
parent 17f48ec3f1
commit 6ed5eff025
1 changed files with 1 additions and 1 deletions
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2
sound/core/timer.c
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@ -971,7 +971,7 @@ static void snd_timer_s_function(unsigned long data)
struct snd_timer_system_private *priv = timer->private_data;
unsigned long jiff = jiffies;
if (time_after(jiff, priv->last_expires))
priv->correction = (long)jiff - (long)priv->last_expires;
priv->correction += (long)jiff - (long)priv->last_expires;
snd_timer_interrupt(timer, (long)jiff - (long)priv->last_jiffies);
}