Am 30.01.19 um 02:53 schrieb Bas Nieuwenhuizen:
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 <b...@basnieuwenhuizen.nl>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 11 ++++++++---
  1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index d85184b5b35c..30407e55593b 100644
--- 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) {

Better do "if (!ring[j]->adev) continue;".

With that done the patch is Reviewed-by: Christian König <christian.koe...@amd.com>.

Regards,
Christian.

+                               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;
        }

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