From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 5 Mar 2018 10:41:05 +0000
Subject: drm/i915: Assert that the request is indeed complete when signaled
 from irq
Git-commit: 4e9a8bef20c973f62358fbd888a38f1bd1669200
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

After we call dma_fence_signal(), confirm that the request was indeed
complete.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180305104105.8296-1-chris@chris-wilson.co.uk

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/i915_irq.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1123,6 +1123,7 @@ static void notify_ring(struct intel_eng
 
 	if (rq) {
 		dma_fence_signal(&rq->fence);
+		GEM_BUG_ON(!i915_request_completed(rq));
 		i915_request_put(rq);
 	}