[PATCH v4 04/14] drm/sched: Cancel and flush all oustatdning jobs before finish.

[Andrey Grodzovsky]

To avoid any possible use after free.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/scheduler/sched_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 997aa15..92637b7 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -899,6 +899,9 @@ void drm_sched_fini(struct drm_gpu_scheduler *sched)
 	if (sched->thread)
 		kthread_stop(sched->thread);
 
+	/* Confirm no work left behind accessing device structures */
+	cancel_delayed_work_sync(&sched->work_tdr);
+
 	sched->ready = false;
 }
 EXPORT_SYMBOL(drm_sched_fini);
-- 
2.7.4