454 if (timeri == NULL || ticks < 1)
455 return -EINVAL;
456 if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
457 result = snd_timer_start_slave(timeri);
458 snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
459 return result;
460 }
461 timer = timeri->timer;
462 if (timer == NULL)
463 return -EINVAL;
464 spin_lock_irqsave(&timer->lock, flags);
465 timeri->ticks = timeri->cticks = ticks;
466 timeri->pticks = 0;
467 result = snd_timer_start1(timer, timeri, ticks);
468 spin_unlock_irqrestore(&timer->lock, flags);
469 snd_timer_notify1(timeri, SNDRV_TIMER_EVENT_START);
470 return result;
471}
472
473static int _snd_timer_stop(struct snd_timer_instance * timeri,
474 int keep_flag, int event)
475{
476 struct snd_timer *timer;
477 unsigned long flags;
478
479 if (snd_BUG_ON(!timeri))
480 return -ENXIO;
481
482 if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
483 if (!keep_flag) {
484 spin_lock_irqsave(&slave_active_lock, flags);
485 timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
486 spin_unlock_irqrestore(&slave_active_lock, flags);
487 }
488 goto __end;
489 }
490 timer = timeri->timer;
491 if (!timer)
492 return -EINVAL;
493 spin_lock_irqsave(&timer->lock, flags);
494 list_del_init(&timeri->ack_list);