[PATCH 1/3] drm/amdgpu: check domain sanity in amdgpu_bo_pin_restricted()

[deathsimple@xxxxxxxxxxx (Christian König)]

Am 18.08.2016 um 07:36 schrieb Flora Cui:
> abort if the bo is pined to other domain already
>
> Change-Id: I0e8eb3e0af0fad1edaf647050399e5a36226a5d9
> Signed-off-by: Flora Cui <Flora.Cui at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com> for the whole 
series.

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 4d084ee..0a0f3cb 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -520,6 +520,11 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
>   		return -EINVAL;
>   
>   	if (bo->pin_count) {
> +		uint32_t mem_type = bo->tbo.mem.mem_type;
> +
> +		if (domain != amdgpu_mem_type_to_domain(mem_type))
> +			return -EINVAL;
> +
>   		bo->pin_count++;
>   		if (gpu_addr)
>   			*gpu_addr = amdgpu_bo_gpu_offset(bo);