From 2883cebabbc4efc00408024d284a0230ad3af8a0 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Wed, 25 May 2011 11:34:52 +0200
Subject: [PATCH] vfb: 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>
---
 drivers/video/vfb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/vfb.c b/drivers/video/vfb.c
index bc67251f1a2f..bf2f78065cf9 100644
--- a/drivers/video/vfb.c
+++ b/drivers/video/vfb.c
@@ -395,8 +395,8 @@ static int vfb_pan_display(struct fb_var_screeninfo *var,
 		    || var->xoffset)
 			return -EINVAL;
 	} else {
-		if (var->xoffset + var->xres > info->var.xres_virtual ||
-		    var->yoffset + var->yres > info->var.yres_virtual)
+		if (var->xoffset + info->var.xres > info->var.xres_virtual ||
+		    var->yoffset + info->var.yres > info->var.yres_virtual)
 			return -EINVAL;
 	}
 	info->var.xoffset = var->xoffset;