Re: [PATCH 1/2] drm/amdgpu: return early for preempt type BOs

[Christian König <ckoenig.leichtzumerken@xxxxxxxxx>]

Am 25.06.21 um 19:28 schrieb Nirmoy Das:
> Return early for AMDGPU_PL_PREEMPT BOs so that we don't pass
> wrong pointer to amdgpu_gtt_mgr_has_gart_addr() which assumes
> ttm_resource argument to be TTM_PL_TT type BO's.
>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index b46726e47bce..3df06772a425 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -926,6 +926,11 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
>   	    bo_mem->mem_type == AMDGPU_PL_OA)
>   		return -EINVAL;
>   
> +	if (bo_mem->mem_type == AMDGPU_PL_PREEMPT) {

Probably better to merge that into the if below.

E.g. if bo_mem->mem_type != TTM_PL_TT || .....

Christian.

> +		gtt->offset = AMDGPU_BO_INVALID_OFFSET;
> +		return 0;
> +	}
> +
>   	if (!amdgpu_gtt_mgr_has_gart_addr(bo_mem)) {
>   		gtt->offset = AMDGPU_BO_INVALID_OFFSET;
>   		return 0;