[PATCH 3/3] dbg

[Chris Wilson]

---
 drivers/gpu/drm/i915/gt/intel_engine_pm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
index 0e1ad4a4bd97..0b5b206f22c3 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
@@ -96,6 +96,7 @@ __queue_and_release_pm(struct i915_request *rq,
 	/* Let intel_gt_retire_requests() retire us (acquired under lock) */
 	if (!atomic_fetch_inc(&tl->active_count))
 		list_add_tail(&tl->link, &timelines->active_list);
+	GEM_BUG_ON(list_empty((&tl->link));
 
 	/* Hand the request over to HW and so engine_retire() */
 	__i915_request_queue(rq, NULL);
-- 
2.24.0