Bas Nieuwenhuizen 1decbf6bb0
drm/sched: Fix entities with 0 rqs. ...
Some blocks in amdgpu can have 0 rqs.
Job creation already fails with -ENOENT when entity->rq is NULL,
so jobs cannot be pushed. Without a rq there is no scheduler to
pop jobs, and rq selection already does the right thing with a
list of length 0.
So the operations we need to fix are:
- Creation, do not set rq to rq_list[0] if the list can have length 0.
- Do not flush any jobs when there is no rq.
- On entity destruction handle the rq = NULL case.
- on set_priority, do not try to change the rq if it is NULL.
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl >
Reviewed-by: Christian König <christian.koenig@amd.com >
Signed-off-by: Alex Deucher <alexander.deucher@amd.com >
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1decbf6bb0