From: Chunming Zhou <david1.zhou@amd.com>
Date: Tue, 7 Nov 2017 10:27:43 +0800
Subject: drm/amd/scheduler: add WARN_ON for s_fence->parent
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Git-commit: 45bfd9690a6af05453f7b00ca82ba458d9573c9b
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
@@ -241,6 +241,7 @@ void amd_sched_entity_fini(struct amd_gp
 			amd_sched_fence_scheduled(s_fence);
 			dma_fence_set_error(&s_fence->finished, -ESRCH);
 			amd_sched_fence_finished(s_fence);
+			WARN_ON(s_fence->parent);
 			dma_fence_put(&s_fence->finished);
 			sched->ops->free_job(job);
 		}