From patchwork Fri Mar 5 13:26:20 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ville.syrjala@nokia.com X-Patchwork-Id: 83748 X-Patchwork-Delegate: tomi.valkeinen@nokia.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o25DQjdv008580 for ; Fri, 5 Mar 2010 13:26:45 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751490Ab0CEN0o (ORCPT ); Fri, 5 Mar 2010 08:26:44 -0500 Received: from smtp.nokia.com ([192.100.105.134]:18378 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750874Ab0CEN0n (ORCPT ); Fri, 5 Mar 2010 08:26:43 -0500 Received: from vaebh105.NOE.Nokia.com (vaebh105.europe.nokia.com [10.160.244.31]) by mgw-mx09.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o25DQRRu032332; Fri, 5 Mar 2010 07:26:41 -0600 Received: from vaebh104.NOE.Nokia.com ([10.160.244.30]) by vaebh105.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.3959); Fri, 5 Mar 2010 15:26:40 +0200 Received: from mgw-sa01.ext.nokia.com ([147.243.1.47]) by vaebh104.NOE.Nokia.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Fri, 5 Mar 2010 15:26:39 +0200 Received: from stinkpad (esdhcp04093.research.nokia.com [172.21.40.93]) by mgw-sa01.ext.nokia.com (Switch-3.3.3/Switch-3.3.3) with SMTP id o25DQbKL001926; Fri, 5 Mar 2010 15:26:37 +0200 Received: by stinkpad (sSMTP sendmail emulation); Fri, 05 Mar 2010 15:26:37 +0200 From: ville.syrjala@nokia.com To: "Tomi Valkeinen" Cc: linux-fbdev@vger.kernel.org, linux-omap@vger.kernel.org, =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Subject: [PATCH 2/4] DSS2: Check if display supports update mode changes Date: Fri, 5 Mar 2010 15:26:20 +0200 Message-Id: <1267795582-21004-2-git-send-email-ville.syrjala@nokia.com> X-Mailer: git-send-email 1.6.4.4 In-Reply-To: <1267795582-21004-1-git-send-email-ville.syrjala@nokia.com> References: <1267795582-21004-1-git-send-email-ville.syrjala@nokia.com> MIME-Version: 1.0 X-OriginalArrivalTime: 05 Mar 2010 13:26:39.0450 (UTC) FILETIME=[7CC63BA0:01CABC67] X-Nokia-AV: Clean Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 05 Mar 2010 13:26:45 +0000 (UTC) diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c index 6a74ea1..3a8f146 100644 --- a/drivers/video/omap2/dss/display.c +++ b/drivers/video/omap2/dss/display.c @@ -82,6 +82,9 @@ static ssize_t display_upd_mode_store(struct device *dev, int val, r; enum omap_dss_update_mode mode; + if (!dssdev->driver->set_update_mode) + return -EINVAL; + val = simple_strtoul(buf, NULL, 10); switch (val) {