amdgpu_bo_ref
bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
amdgpu_bo_ref(work->old_abo);
abo->parent = amdgpu_bo_ref(vm->root.base.bo);
pd = amdgpu_bo_ref(fpriv->vm.root.base.bo);
bo->shadow->parent = amdgpu_bo_ref(bo);
struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo);
pt->parent = amdgpu_bo_ref(cursor.parent->base.bo);
root = amdgpu_bo_ref(vm->root.base.bo);
amdgpu_bo_ref(rbo);