drm/amdgpu: Only add rqs for initialized rings.

I don't see another way to figure out if a ring is initialized if
the hardware block might not be initialized.

Entities have been fixed up to handle num_rqs = 0.

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>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index d85184b..7b52659 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -124,6 +124,7 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
                struct amdgpu_ring *rings[AMDGPU_MAX_RINGS];
                struct drm_sched_rq *rqs[AMDGPU_MAX_RINGS];
                unsigned num_rings;
+               unsigned num_rqs = 0;
 
                switch (i) {
                case AMDGPU_HW_IP_GFX:
@@ -166,12 +167,16 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
                        break;
                }
 
-               for (j = 0; j < num_rings; ++j)
-                       rqs[j] = &rings[j]->sched.sched_rq[priority];
+               for (j = 0; j < num_rings; ++j) {
+                       if (!rings[j]->adev)
+                               continue;
+
+                       rqs[num_rqs++] = &rings[j]->sched.sched_rq[priority];
+               }
 
                for (j = 0; j < amdgpu_ctx_num_entities[i]; ++j)
                        r = drm_sched_entity_init(&ctx->entities[i][j].entity,
-                                                 rqs, num_rings, &ctx->guilty);
+                                                 rqs, num_rqs, &ctx->guilty);
                if (r)
                        goto error_cleanup_entities;
        }