[PATCH 1/3] drm: add helper to check for wc memory support

[Christian König]

Am 30.01.2016 um 06:59 schrieb Oded Gabbay:
> From: Dave Airlie <airlied at redhat.com>
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> Signed-off-by: Oded Gabbay <oded.gabbay at gmail.com>

With the minor issues Michel noted fixed this series is Reviewed-by: 
Christian König <christian.koenig at amd.com> as well.

> ---
>   include/drm/drm_cache.h | 9 +++++++++
>   1 file changed, 9 insertions(+)
>
> diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
> index 7bfb063..461a055 100644
> --- a/include/drm/drm_cache.h
> +++ b/include/drm/drm_cache.h
> @@ -35,4 +35,13 @@
>   
>   void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
>   
> +static inline bool drm_arch_can_wc_memory(void)
> +{
> +#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
> +	return false;
> +#else
> +	return true;
> +#endif
> +}
> +
>   #endif