From: Alan Cox <alan@linux.intel.com>
Date: Wed, 25 Apr 2012 13:36:13 +0000 (+0100)
Subject: gma500: Fix leak of uncached page
X-Git-Tag: upstream/snapshot3+hdmi~6931^2~75
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1896344b181549cea0ab38a810f4f8efcd6ecafb;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

gma500: Fix leak of uncached page

This was reported a long time ago (and I apologize to whoever it was that
reported it as I've lost the original report).

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

diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index c34adf9..d5a6eab 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -246,6 +246,7 @@ static int psb_driver_unload(struct drm_device *dev)
 		}
 		psb_gtt_takedown(dev);
 		if (dev_priv->scratch_page) {
+			set_pages_wb(dev_priv->scratch_page, 1);
 			__free_page(dev_priv->scratch_page);
 			dev_priv->scratch_page = NULL;
 		}