[PATCH 4/8] drm/ttm: use ttm put pages function to properly restore cache attribute

[Konrad Rzeszutek Wilk]

On Wed, Nov 02, 2011 at 07:37:51PM -0400, j.glisse at gmail.com wrote:
> From: Jerome Glisse <jglisse at redhat.com>
> 
> On failure we need to make sure the page we free has wb cache
> attribute. Do this pas call the proper ttm page helper function.
> 
> Signed-off-by: Jerome Glisse <jglisse at redhat.com>

Reviewed-by...
> ---
>  drivers/gpu/drm/ttm/ttm_tt.c |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
> index 8b7a6d0..3fb4c6d 100644
> --- a/drivers/gpu/drm/ttm/ttm_tt.c
> +++ b/drivers/gpu/drm/ttm/ttm_tt.c
> @@ -89,7 +89,10 @@ static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index)
>  	}
>  	return p;
>  out_err:
> -	put_page(p);
> +	INIT_LIST_HEAD(&h);
> +	list_add(&p->lru, &h);
> +	ttm_put_pages(&h, 1, ttm->page_flags,
> +		      ttm->caching_state, &ttm->dma_address[index]);
>  	return NULL;
>  }
>  
> -- 
> 1.7.1