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

From: Dave Airlie airlied@redhat.com

Signed-off-by: Dave Airlie airlied@redhat.com Signed-off-by: Oded Gabbay oded.gabbay@gmail.com --- 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