From patchwork Wed May 25 22:58:16 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 818642 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p4PMwAsq026945 for ; Wed, 25 May 2011 22:58:21 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756766Ab1EYW6U (ORCPT ); Wed, 25 May 2011 18:58:20 -0400 Received: from perceval.ideasonboard.com ([95.142.166.194]:53777 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753185Ab1EYW6R (ORCPT ); Wed, 25 May 2011 18:58:17 -0400 Received: from localhost.localdomain (unknown [91.178.57.18]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id CF79D35B5A; Wed, 25 May 2011 22:58:13 +0000 (UTC) From: Laurent Pinchart To: linux-fbdev@vger.kernel.org Cc: Krzysztof Helt Subject: [PATCH 24/29] tridentfb: use display information in info not in var for panning Date: Thu, 26 May 2011 00:58:16 +0200 Message-Id: <1306364301-8195-25-git-send-email-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <201105232211.40154.laurent.pinchart@ideasonboard.com> References: <201105232211.40154.laurent.pinchart@ideasonboard.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 25 May 2011 22:58:21 +0000 (UTC) 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 Cc: Krzysztof Helt --- drivers/video/tridentfb.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c index c6c7756..34cf019 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;