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drm/amdgpu: fix VM page table reference counting

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We use the reservation object of the page directory for the page tables as
well, because of this the page directory should be freed last. Ensure that
by keeping a reference from the page tables to the directory.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2015-11-27 16:49:00 +01:00
committed by Alex Deucher
parent 585116c5fa
commit 82b9c55b1e
3 changed files with 7 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@@ -100,6 +100,7 @@ static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
list_del_init(&bo->list);
mutex_unlock(&bo->adev->gem.mutex);
drm_gem_object_release(&bo->gem_base);
amdgpu_bo_unref(&bo->parent);
kfree(bo->metadata);
kfree(bo);
}