From c2d340a403f08e57fb76e738e691fe466a38a8c8 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Tue, 14 Jun 2011 09:24:48 +0000
Subject: [PATCH] gxt4500: use display information in info not in var for
 panning

We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
 drivers/video/gxt4500.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/gxt4500.c b/drivers/video/gxt4500.c
index 896e53dea9061..0fad23f810a32 100644
--- a/drivers/video/gxt4500.c
+++ b/drivers/video/gxt4500.c
@@ -543,8 +543,8 @@ static int gxt4500_pan_display(struct fb_var_screeninfo *var,
 
 	if (var->xoffset & 7)
 		return -EINVAL;
-	if (var->xoffset + var->xres > var->xres_virtual ||
-	    var->yoffset + var->yres > var->yres_virtual)
+	if (var->xoffset + info->var.xres > info->var.xres_virtual ||
+	    var->yoffset + info->var.yres > info->var.yres_virtual)
 		return -EINVAL;
 
 	writereg(par, REFRESH_START, (var->xoffset << 16) | var->yoffset);
-- 
2.30.2