diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c index 49350ea..57711ec 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c +++ b/drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c @@ -114,6 +114,25 @@ nv04_timer_alarm(struct nouveau_timer *ptimer, u64 time, } static void +nv04_timer_alarm_cancel(struct nouveau_timer *ptimer, + struct nouveau_alarm *alarm) +{ + struct nv04_timer_priv *priv = (void *)ptimer; + unsigned long flags; + + /* avoid deleting an entry while the alarm intr is running */ + spin_lock_irqsave(&priv->lock, flags); + + /* delete the alarm from the list */ + list_del(&alarm->head); + + /* reset the head so as list_empty returns 1 */ + INIT_LIST_HEAD(&alarm->head); + + spin_unlock_irqrestore(&priv->lock, flags); +} + +static void nv04_timer_intr(struct nouveau_subdev *subdev) { struct nv04_timer_priv *priv = (void *)subdev; @@ -147,6 +166,7 @@ nv04_timer_ctor(struct nouveau_object *parent, struct nouveau_object *engine, priv->base.base.intr = nv04_timer_intr; priv->base.read = nv04_timer_read; priv->base.alarm = nv04_timer_alarm; + priv->base.alarm_cancel = nv04_timer_alarm_cancel; priv->suspend_time = 0; INIT_LIST_HEAD(&priv->alarms); |