[PATCH 1/2] drm/amdgpu: Add comment to function amdgpu_ttm_alloc_gart

[Christian König]

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

Am 11.09.20 um 20:25 schrieb Oak Zeng:
> Add comments to refect what function does
>
> Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 ++++++-
>   1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 63e5414..8b70445 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -1210,7 +1210,12 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm,
>   }
>   
>   /**
> - * amdgpu_ttm_alloc_gart - Allocate GART memory for buffer object
> + * amdgpu_ttm_alloc_gart - Make sure buffer object is accessible either
> + * through AGP or GART aperture.
> + *
> + * If bo is accessible through AGP aperture, then use AGP aperture
> + * to access bo; otherwise allocate logical space in GART aperture
> + * and map bo to GART aperture.
>    */
>   int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
>   {