From patchwork Wed May 17 15:38:14 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 9731489 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 86225602B4 for ; Wed, 17 May 2017 15:38:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 78FDA200F5 for ; Wed, 17 May 2017 15:38:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6DA1C26E54; Wed, 17 May 2017 15:38:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 389DA200F5 for ; Wed, 17 May 2017 15:38:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753322AbdEQPi2 (ORCPT ); Wed, 17 May 2017 11:38:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:60672 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751957AbdEQPiU (ORCPT ); Wed, 17 May 2017 11:38:20 -0400 Received: from CookieMonster.cookiemonster.local (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2790023983; Wed, 17 May 2017 15:38:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2790023983 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=kbingham@kernel.org From: Kieran Bingham To: laurent.pinchart@ideasonboard.com, sakari.ailus@iki.fi, niklas.soderlund@ragnatech.se, geert@glider.be Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Kieran Bingham Subject: [PATCH v3.1 1/2] v4l: subdev: tolerate null in media_entity_to_v4l2_subdev Date: Wed, 17 May 2017 16:38:14 +0100 Message-Id: <38adea84b864609515b2db580a76954b1a114e3f.1495035409.git-series.kieran.bingham+renesas@ideasonboard.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <2a3a6d999502db1b6a47706b4da92d396075b22b.1495029016.git-series.kieran.bingham+renesas@ideasonboard.com> References: <2a3a6d999502db1b6a47706b4da92d396075b22b.1495029016.git-series.kieran.bingham+renesas@ideasonboard.com> In-Reply-To: References: Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kieran Bingham Return NULL, if a null entity is parsed for it's v4l2_subdev Signed-off-by: Kieran Bingham --- include/media/v4l2-subdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 5f1669c45642..72d7f28f38dc 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -829,7 +829,7 @@ struct v4l2_subdev { }; #define media_entity_to_v4l2_subdev(ent) \ - container_of(ent, struct v4l2_subdev, entity) + (ent ? container_of(ent, struct v4l2_subdev, entity) : NULL) #define vdev_to_v4l2_subdev(vdev) \ ((struct v4l2_subdev *)video_get_drvdata(vdev))