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[PATCH 3.19.y-ckt 51/66] drm: Loongson-3 doesn't fully support wc memory

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  [PATCH 3.19.y-ckt 51/66] drm: Loongson-3 doesn't fully support wc memory Kamal Mostafa <kamal@canonical.com> - 2016-04-26 22:30 +0200

#1388015 — [PATCH 3.19.y-ckt 51/66] drm: Loongson-3 doesn't fully support wc memory

3.19.8-ckt20 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Huacai Chen <chenhc@lemote.com>

commit 221004c66a58949a0f25c937a6789c0839feb530 upstream.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 include/drm/drm_cache.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
index 461a055..cebecff 100644
--- a/include/drm/drm_cache.h
+++ b/include/drm/drm_cache.h
@@ -39,6 +39,8 @@ static inline bool drm_arch_can_wc_memory(void)
 {
 #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
 	return false;
+#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
+	return false;
 #else
 	return true;
 #endif
-- 
2.7.4

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