__i915_active_wait
int __i915_active_wait(struct i915_active *ref, int state);
return __i915_active_wait(ref, TASK_INTERRUPTIBLE);
__i915_active_wait(active, TASK_UNINTERRUPTIBLE);
__i915_active_wait(&active->base, TASK_UNINTERRUPTIBLE);
__i915_active_wait(&active->base, TASK_UNINTERRUPTIBLE);