From patchwork Tue Jun 14 09:24:53 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 878452 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p5E9PJ0G004599 for ; Tue, 14 Jun 2011 09:25:21 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755638Ab1FNJZR (ORCPT ); Tue, 14 Jun 2011 05:25:17 -0400 Received: from perceval.ideasonboard.com ([95.142.166.194]:58401 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755862Ab1FNJZO (ORCPT ); Tue, 14 Jun 2011 05:25:14 -0400 Received: from localhost.localdomain (unknown [91.178.246.59]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id E1F7A35B6F for ; Tue, 14 Jun 2011 09:25:02 +0000 (UTC) From: Laurent Pinchart To: linux-fbdev@vger.kernel.org Subject: [PATCH v2 15/29] mx3fb: use display information in info not in var for panning Date: Tue, 14 Jun 2011 11:24:53 +0200 Message-Id: <1308043507-11083-16-git-send-email-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1308043507-11083-1-git-send-email-laurent.pinchart@ideasonboard.com> References: <1308043507-11083-1-git-send-email-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 (demeter2.kernel.org [140.211.167.43]); Tue, 14 Jun 2011 09:25:22 +0000 (UTC) We must not use any information in the passed var besides xoffset, yoffset and vmode as otherwise applications might abuse it. Also use the aligned fix.line_length and not the (possible) unaligned xres_virtual. Signed-off-by: Laurent Pinchart Tested-by: Guennadi Liakhovetski --- drivers/video/mx3fb.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c index 7e3a490..bd76858 100644 --- a/drivers/video/mx3fb.c +++ b/drivers/video/mx3fb.c @@ -1062,15 +1062,15 @@ static int mx3fb_pan_display(struct fb_var_screeninfo *var, y_bottom = var->yoffset; if (!(var->vmode & FB_VMODE_YWRAP)) - y_bottom += var->yres; + y_bottom += fbi->var.yres; if (y_bottom > fbi->var.yres_virtual) return -EINVAL; mutex_lock(&mx3_fbi->mutex); - offset = (var->yoffset * var->xres_virtual + var->xoffset) * - (var->bits_per_pixel / 8); + offset = var->yoffset * fbi->fix.line_length + + var->xoffset * (fbi->var.bits_per_pixel / 8); base = fbi->fix.smem_start + offset; dev_dbg(fbi->device, "Updating SDC BG buf %d address=0x%08lX\n",