From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 834ECC433E1 for ; Thu, 30 Jul 2020 23:01:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A91A20829 for ; Thu, 30 Jul 2020 23:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730746AbgG3XB4 (ORCPT ); Thu, 30 Jul 2020 19:01:56 -0400 Received: from mail-bn8nam11olkn2070.outbound.protection.outlook.com ([40.92.20.70]:51041 "EHLO NAM11-BN8-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730722AbgG3XBv (ORCPT ); Thu, 30 Jul 2020 19:01:51 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=As57PK+A8bWbRZXOVwsn83Y7Va1yGuJqJUyySQBUma2iU+qPKTje0YFAQZMdLnvVv7h1rCtKDhvGGiNEoK4cy0pOFMdNW8a89uxUgnhes5wQcQ6J6VcLUNwAjC4dnpUA2nGkVxgPbroMcl0iKZk+nbjuIkULnrtnnqJFhvquqBHRbaYfMIenK5doG3Sw9Lj3qZu0SpY/TOSAGEfiW28JJ7bmYvCgwunc1gseuSeeAeXwWohzTpBXqVvSvC1J544wJmAQlBd9VakEkR85zLYUqzLZKFcsknLs9Z0S2mzWsmt9QQyKrm7CqtIXPu/tk2/RzYV6tYuey2ppkU0n0Fahow== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IFwcI1sfhl05Cfxb1Di5AA+LY2hFfLfRai16fbWZX58=; b=WnhXwiCxloxr3Sj6eAzsffkVXT6fa7EYNio1ep+p5i2Js0WwPcMnwDg1y5vAN7+uHJDbfSwya2XHxrH3CECiOjKWhVR7GS++2eLPpDKWgmsI3/M/i/Tjj57V7JXbVKUIRgr5MSTxFSbkPE2lZNyhTFqF6hAeDBNfoza90T6xYQXSBsjQE6t7IOy92Zdd9koozWrAFfopg52Ly6mjeSUWtnPZbG4dZT3tKcgfmAq2gm4wX0BoUN9gjvkMedIk8ECTh++LkUjZMHfE+eD8Zf7buGDusFkeV3PKtC+idfQ/JswJwSGD4VwP4WH4U5mTgW7oFKehleLTKiF4qqFDiaxwcg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none; dmarc=none; dkim=none; arc=none Received: from CO1NAM11FT027.eop-nam11.prod.protection.outlook.com (2a01:111:e400:3861::50) by CO1NAM11HT035.eop-nam11.prod.protection.outlook.com (2a01:111:e400:3861::331) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.20; Thu, 30 Jul 2020 23:01:48 +0000 Received: from BN6PR04MB0660.namprd04.prod.outlook.com (2a01:111:e400:3861::4a) by CO1NAM11FT027.mail.protection.outlook.com (2a01:111:e400:3861::224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.20 via Frontend Transport; Thu, 30 Jul 2020 23:01:48 +0000 X-IncomingTopHeaderMarker: OriginalChecksum:33A44F6322D0AD2B83F43F8689C76C45CD5E42EA47158C51C25A6059191EF691;UpperCasedChecksum:D0CF47B78F902E1C38966E4DC74BFE8F4A91DB0BB8BB7896936D899EE9099558;SizeAsReceived:7878;Count:49 Received: from BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::b9c3:9bff:541d:f383]) by BN6PR04MB0660.namprd04.prod.outlook.com ([fe80::b9c3:9bff:541d:f383%9]) with mapi id 15.20.3239.020; Thu, 30 Jul 2020 23:01:48 +0000 From: Jonathan Bakker To: kyungmin.park@samsung.com, s.nawrocki@samsung.com, mchehab@kernel.org, kgene@kernel.org, krzk@kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org, robh+dt@kernel.org, Jonathan Bakker Subject: [PATCH v2 03/11] media: exynos4-is: Fix nullptr when no CSIS device present Date: Thu, 30 Jul 2020 16:01:06 -0700 Message-ID: X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200730230114.8572-1-xc-racer2@live.ca> References: <20200730230114.8572-1-xc-racer2@live.ca> Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-ClientProxiedBy: MWHPR07CA0002.namprd07.prod.outlook.com (2603:10b6:300:116::12) To BN6PR04MB0660.namprd04.prod.outlook.com (2603:10b6:404:d9::21) X-Microsoft-Original-Message-ID: <20200730230114.8572-4-xc-racer2@live.ca> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from jon-hp-6570b.telus (2001:569:fb68:9c00:8067:f823:1e15:7520) by MWHPR07CA0002.namprd07.prod.outlook.com (2603:10b6:300:116::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.16 via Frontend Transport; Thu, 30 Jul 2020 23:01:45 +0000 X-Mailer: git-send-email 2.20.1 X-Microsoft-Original-Message-ID: <20200730230114.8572-4-xc-racer2@live.ca> X-TMN: [5pTyvKD3uOwSfRd6igeVOCvD7KYa5IT+CI7MuP/mmKyP7C5Yjr67Dtg+vwaUTVjB] X-MS-PublicTrafficType: Email X-IncomingHeaderCount: 49 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-Correlation-Id: 215fd480-fb37-472c-7bd8-08d834dc898e X-MS-TrafficTypeDiagnostic: CO1NAM11HT035: X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 4AI5RBbwESGuvJDWsrExH7cLCrJWaMivl2C9UZXfNfaN8ltOkAqJSjU0TE7GMz50PfyFHa9DA8cS4bKgC3dkTQZGeDoFMzF9T0kYLZjcvsoyY2Ch8uEEFRwmZEUqXGpHJaGhx+f3RwPPT+oQDDxZD1LGZaCMjekYa1WMwi/isq8crxLwY2MFKdB8WM5prWY0GMtoXmmf3w192JqkUwDixw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:0;SRV:;IPV:NLI;SFV:NSPM;H:BN6PR04MB0660.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:;DIR:OUT;SFP:1901; X-MS-Exchange-AntiSpam-MessageData: 7kb0G2eI5B0JU/fAKFN4PAkfPk25wCftyzpqMxxu01/T/E7LXipeJfk83og3zQqfpz6bYST/9YmdXqlYfTG7AWGqTOWuY2Y//worAX3W83B5TdYrlGQgLaT6KrQor2iSN79wXi55q/hw9dXx6DQS9buYXBENzAJn80roruFYurWkANi/wOsHYzHPEW60ok9ZBUiCAAETc5r2Yw/jU8ot0A== X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 215fd480-fb37-472c-7bd8-08d834dc898e X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jul 2020 23:01:48.2189 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT027.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1NAM11HT035 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Not all devices use the CSIS device, some may use the FIMC directly in which case the CSIS device isn't registered. This leads to a nullptr exception when starting the stream as the CSIS device is always referenced. Instead, if getting the CSIS device fails, try getting the FIMC directly to check if we are using the subdev API Signed-off-by: Jonathan Bakker Reviewed-by: Sylwester Nawrocki --- Changes from v1: - Added R-b tag --- drivers/media/platform/exynos4-is/media-dev.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index 9aaf3b8060d5..5c32abc7251b 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -289,11 +289,26 @@ static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on) { IDX_CSIS, IDX_FLITE, IDX_FIMC, IDX_SENSOR, IDX_IS_ISP }, }; struct fimc_pipeline *p = to_fimc_pipeline(ep); - struct fimc_md *fmd = entity_to_fimc_mdev(&p->subdevs[IDX_CSIS]->entity); enum fimc_subdev_index sd_id; int i, ret = 0; if (p->subdevs[IDX_SENSOR] == NULL) { + struct fimc_md *fmd; + struct v4l2_subdev *sd = p->subdevs[IDX_CSIS]; + + if (!sd) + sd = p->subdevs[IDX_FIMC]; + + if (!sd) { + /* + * If neither CSIS nor FIMC was set up, + * it's impossible to have any sensors + */ + return -ENODEV; + } + + fmd = entity_to_fimc_mdev(&sd->entity); + if (!fmd->user_subdev_api) { /* * Sensor must be already discovered if we -- 2.20.1