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drm/amdgpu: error out on entity with no run queue

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Disabled HW IP's entity initialized with NULL rq. We should not
process any submit request from userspace for a disabled HW IP.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nirmoy Das 2020-01-09 12:07:22 +01:00 committed by Alex Deucher
parent 8eee00f615
commit 55414ad5c9
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@ -909,6 +909,11 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
if (parser->entity && parser->entity != entity)
return -EINVAL;
/* Return if there is no run queue associated with this entity.
* Possibly because of disabled HW IP*/
if (entity->rq == NULL)
return -EINVAL;
parser->entity = entity;
ring = to_amdgpu_ring(entity->rq->sched);