From: Alan Cox <alan@linux.intel.com>
Date: Wed, 25 Apr 2012 13:37:00 +0000 (+0100)
Subject: gma500: mark framebuffer pages write combining
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d955e71b506fcef3e9407af7fdecf973a4ffbc72;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

gma500: mark framebuffer pages write combining

We don't want them uncached, combining will do nicely and fixes the performance
problem with the generic modesetting X server.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/gma500/gtt.c b/drivers/gpu/drm/gma500/gtt.c
index c6465b40090f..db2e823e8951 100644
--- a/drivers/gpu/drm/gma500/gtt.c
+++ b/drivers/gpu/drm/gma500/gtt.c
@@ -93,7 +93,7 @@ static int psb_gtt_insert(struct drm_device *dev, struct gtt_range *r)
 	pages = r->pages;
 
 	/* Make sure changes are visible to the GPU */
-	set_pages_array_uc(pages, r->npage);
+	set_pages_array_wc(pages, r->npage);
 
 	/* Write our page entries into the GTT itself */
 	for (i = r->roll; i < r->npage; i++) {