[ALSA] timer: fix timer rescheduling

When checking whether a hardware timer needs to be rescheduled, we have
to compare against the previously scheduled interval and not against the
actual interval between the last two interrupts.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/core/timer.c

@@ -718,7 +718,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
 		}
 	}
 	if (timer->flags & SNDRV_TIMER_FLG_RESCHED)
-		snd_timer_reschedule(timer, ticks_left);
+		snd_timer_reschedule(timer, timer->sticks);
 	if (timer->running) {
 		if (timer->hw.flags & SNDRV_TIMER_HW_STOP) {
 			timer->hw.stop(timer);