| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 037/196] drm: add helper to check for wc memory support | Date | Tue, 8 Mar 2016 16:28:15 -0800 |
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3.19.8-ckt16 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Dave Airlie <airlied@redhat.com>
commit 4b0e4e4af6c6dc8354dcb72182d52c1bc55f12fc upstream.
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Kamal Mostafa <kamal@canonical.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 -- 2.7.0
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