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drm/radeon: Only prompt for enabling PAT when we'd allow write-combining 

No use bothering users about this for whom we disable write-combining for
other reasons anyway.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2015-11-05 17:25:28 +09:00 committed by Alex Deucher
parent a28bbd5824
commit 938204985c
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/radeon/radeon_object.c
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@ -241,8 +241,9 @@ int radeon_bo_create(struct radeon_device *rdev,
#warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
thanks to write-combining
DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
"better performance thanks to write-combining\n");
if (bo->flags & RADEON_GEM_GTT_WC)
DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
"better performance thanks to write-combining\n");
bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
#endif