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drm/amdgpu: Fix warning in dma_fence_is_later on resume from S3.

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Problem:
amdgpu_ttm_set_buffer_funcs_status destroys adev->mman.entity on suspend
without releasing adev->mman.bdev.man[TTM_PL_VRAM].move fence
so on resume the new drm_sched_entity.fence_context causes
the warning against the old fence context which is different.

Fix:
When destroying sched_entity in amdgpu_ttm_set_buffer_funcs_status
release  man->move and set the pointer to NULL.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2018-07-20 11:42:24 -04:00 committed by Alex Deucher
parent ecb8c50382
commit 7766484b4a
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1927,6 +1927,8 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable)
} else {
drm_sched_entity_destroy(adev->mman.entity.sched,
&adev->mman.entity);
dma_fence_put(man->move);
man->move = NULL;
}
/* this just adjusts TTM size idea, which sets lpfn to the correct value */