[PATCH] drm/sched: Don't crash kernel on wrong params

[Philipp Stanner <phasta@kernel.org>]

drm_sched_job_arm() just panics the kernel with BUG_ON() in case of an
entity being NULL. While drm_sched_job_arm() crashing or not effectively
arming jobs is certainly a huge issue that needs to be noticed,
completely shooting down the kernel reduces the probability of reaching
and debugging a system to 0.

Moreover, the checkpatch script by now strongly discourages all new uses
of BUG_ON() for this reason.

Replace the BUG_ON() in drm_sched_job_arm() with a WARN_ON().

Signed-off-by: Philipp Stanner <phasta@kernel.org>
---
 drivers/gpu/drm/scheduler/sched_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 1d4f1b822e7b..3bf4ae0ca4bc 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -857,7 +857,7 @@ void drm_sched_job_arm(struct drm_sched_job *job)
 	struct drm_gpu_scheduler *sched;
 	struct drm_sched_entity *entity = job->entity;
 
-	BUG_ON(!entity);
+	WARN_ON(!entity);
 	drm_sched_entity_select_rq(entity);
 	sched = entity->rq->sched;
 
-- 
2.49.0