From e4c735af0076923643af48577fc9ad6e123a55fa Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Tue, 14 Jun 2011 09:25:02 +0000
Subject: [PATCH] tridentfb: 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: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
drivers/video/tridentfb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c
index c6c77562839d9..34cf019bba44b 100644
--- a/drivers/video/tridentfb.c
+++ b/drivers/video/tridentfb.c
@@ -987,8 +987,8 @@ static int tridentfb_pan_display(struct fb_var_screeninfo *var,
unsigned int offset;
debug("enter\n");
- offset = (var->xoffset + (var->yoffset * var->xres_virtual))
- * var->bits_per_pixel / 32;
+ offset = (var->xoffset + (var->yoffset * info->var.xres_virtual))
+ * info->var.bits_per_pixel / 32;
set_screen_start(par, offset);
debug("exit\n");
return 0;
--
2.30.2