[PATCH 3/3] drm/radeon: Only prompt for enabling PAT when we'd allow write-combining
Michel Dänzer
michel at daenzer.net
Thu Nov 5 00:25:28 PST 2015
From: Michel Dänzer <michel.daenzer at amd.com>
No use bothering users about this for whom we disable write-combining for
other reasons anyway.
Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
drivers/gpu/drm/radeon/radeon_object.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index dda2ecf..84d4563 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -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
--
2.6.2
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