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

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>
This commit is contained in:
Huacai Chen 2016-04-19 19:19:11 +08:00 committed by Dave Airlie
parent 005e8dad01
commit 221004c66a
1 changed files with 2 additions and 0 deletions
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2
include/drm/drm_cache.h
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@ -39,6 +39,8 @@ static inline bool drm_arch_can_wc_memory(void)
{ {
#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE) #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
return false; return false;
#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
return false;
#else #else
return true; return true;
#endif #endif