drm: Loongson-3 doesn't fully support wc memory

[ Upstream commit 221004c ] Signed-off-by: Huacai Chen <chenhc@lemote.com> Cc: stable@vger.kernel.org Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
mariux64 · May 10, 2016 · 837d4fb · 837d4fb
1 parent ebaea24
commit 837d4fb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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