diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_active.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_active.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c index f3da5c06f331..4fcd567ff818 100644 --- a/drivers/gpu/drm/i915/i915_active.c +++ b/drivers/gpu/drm/i915/i915_active.c @@ -416,13 +416,15 @@ int i915_active_acquire(struct i915_active *ref) if (err) return err; - if (!atomic_read(&ref->count) && ref->active) - err = ref->active(ref); - if (!err) { - spin_lock_irq(&ref->tree_lock); /* vs __active_retire() */ - debug_active_activate(ref); - atomic_inc(&ref->count); - spin_unlock_irq(&ref->tree_lock); + if (likely(!i915_active_acquire_if_busy(ref))) { + if (ref->active) + err = ref->active(ref); + if (!err) { + spin_lock_irq(&ref->tree_lock); /* __active_retire() */ + debug_active_activate(ref); + atomic_inc(&ref->count); + spin_unlock_irq(&ref->tree_lock); + } } mutex_unlock(&ref->mutex); |