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drm/nouveau/timer: allow alarms to be cancelled

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2013-04-26 09:17:22 +10:00
parent 10caad339c
commit 6d1d1cc97b
1 changed files with 9 additions and 4 deletions
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13
drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c
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@ -96,11 +96,16 @@ nv04_timer_alarm(struct nouveau_timer *ptimer, u64 time,
/* append new alarm to list, in soonest-alarm-first order */
spin_lock_irqsave(&priv->lock, flags);
list_for_each_entry(list, &priv->alarms, head) {
if (list->timestamp > alarm->timestamp)
break;
if (!time) {
if (!list_empty(&alarm->head))
list_del(&alarm->head);
} else {
list_for_each_entry(list, &priv->alarms, head) {
if (list->timestamp > alarm->timestamp)
break;
}
list_add_tail(&alarm->head, &list->head);
}
list_add_tail(&alarm->head, &list->head);
spin_unlock_irqrestore(&priv->lock, flags);
/* process pending alarms */