[PATCH 1/3] drm/ttm: add set_pages_wb for handling page order more than zero

[ckoenig.leichtzumerken@xxxxxxxxx (Christian König)]

Am 22.11.2017 um 12:44 schrieb Roger He:
> Change-Id: Idf5ccb579d264b343199d8b8344bddeec2c0019f
> Signed-off-by: Roger He <Hongbo.He at amd.com>

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

> ---
>   drivers/gpu/drm/ttm/ttm_page_alloc.c | 11 +++++++++++
>   1 file changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
> index a8b2bfa..cdbb731 100644
> --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
> +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
> @@ -223,6 +223,17 @@ static struct kobj_type ttm_pool_kobj_type = {
>   static struct ttm_pool_manager *_manager;
>   
>   #ifndef CONFIG_X86
> +static int set_pages_wb(struct page *page, int numpages)
> +{
> +#if IS_ENABLED(CONFIG_AGP)
> +	int i;
> +
> +	for (i = 0; i < numpages; i++)
> +		unmap_page_from_agp(page++);
> +#endif
> +	return 0;
> +}
> +
>   static int set_pages_array_wb(struct page **pages, int addrinarray)
>   {
>   #if IS_ENABLED(CONFIG_AGP)