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[209.132.180.67]) by mx.google.com with ESMTP id u193si17252794pgc.410.2019.04.04.14.57.07; Thu, 04 Apr 2019 14:57:22 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=LVSp3FDO; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731160AbfDDUmv (ORCPT + 99 others); Thu, 4 Apr 2019 16:42:51 -0400 Received: from mout.web.de ([212.227.17.12]:55093 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729924AbfDDUmv (ORCPT ); Thu, 4 Apr 2019 16:42:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1554410555; bh=6HIwiYbANMV6jQjWrx5bJc0orI/6ermAa1nqrngjzu8=; h=X-UI-Sender-Class:Cc:References:Subject:To:From:Date:In-Reply-To; b=LVSp3FDO7YidRv7nKROd5H8JEJGQg8SCYxo/1pOXQIj3wN3UlwPPZTubPAXfh6TuU jLaGDjXt1ihGg+SrJiIPJ7M0XT8Zyjv6iX8sCM4IH+cqbcrSVx+xuRNiIpjk4NT2rK INYtpgFycyZ9nuPJpj6TdvhWbFbEalAqd4Av44uw= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.135.54.132]) by smtp.web.de (mrweb102 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MAvGa-1h2D1j2t9g-009yHM; Thu, 04 Apr 2019 22:42:35 +0200 Cc: linux-kernel@vger.kernel.org, Daniel Vetter , David Airlie , Laurent Pinchart , Sebastian Reichel , Tomi Valkeinen , Yi Wang References: <1554307455-40361-5-git-send-email-wen.yang99@zte.com.cn> Subject: Re: [PATCH 4/7] drm/omap: fix possible object reference leak To: Wen Yang , dri-devel@lists.freedesktop.org, kernel-janitors@vger.kernel.org From: Markus Elfring Openpgp: preference=signencrypt Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <1554307455-40361-5-git-send-email-wen.yang99@zte.com.cn> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:auQSF9DF0zLXJ3FokmdszWz8yKEXutUAQX4VCAxRxWzVILMYlqN ffZqHOjH6KvFa3lPWRlftNoaYBrYSm2bZIqsrLQhJiEZcgkEdP8NQw9m+ZDmJ1UULGNDADo M18ZY7J4rAvNBEniQt1HKjLl9DwTUcQhMqH1+LUvT87HcnAmwxqlZ2c5USqPQXAzM10G6Ol hKf3vtfIRBn8LhnT9Aguw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:unFx00kRW/k=:PwaRw0i2A/yMMgTJgMeENd 8D2gKtv/vI3x9Nq0AqTc+mfZcBBgHEpiAJcVvD7jj632Rj82hkfQO6oomRmPrT3rjxaiEFCl/ 7C0sI6j6x9/duelijt9lFfVotBc3YbJnzDVrPPMaDEcK6D4YbHRvykrrsx13/ahiZ6w9pajOf Q8N5/sAks+veCrW02M3gvhK4EkPZvjSHXs6HRpIAmuwVnxkldld64k348ju1SuWNq792kHv7c geGL5F+e+SyGI0PVzEh1i155JBYFW6dIHJTHXWC7yP3FmEQ+aFMibk4t1jXaVi63VQ2IiKgxF 4/atgsC+237y8vv67Z6INP+F8T6dKYsVeTMIJXz1G6oHuqshBE0t4GLZfL+6OMBj9h8o30Clv Wl7yORdiJlU6XHExr8pKoMAudcu+GfbHVdL47j2iBxhPm6rhpF1DgQZ9xBV4NCbnfC9w1fb9a CJX7r8+hc4C6Fpg0H5m9TSTlRhW8gsnsIxLCggGhbbXqxREZZJIRzmB91yhsOM/S4zc/9pib8 RKcJCCDUPgBddcC+3tHjXAbehnHmg18GzCqGPP6wKa/eNYI377O64LJG+z9iO/U4z0nmsM0Q1 73eHhx3Jxb/3hoDeFFpJZhQvR1mIwzMvS/F7PxsbfolPpAsIAauVOPapfbh6BrtMO9fJbCH2R qLGhO+LVFJNo9MGc/gLcRWSO7COkyCLzykH2WCHwp3NewU1kkur9zjX+GBOCbL6g9KeBDkTzt 4O4AL/yHH4VsGF53TumkIwG70GXXqUW8kda7U31vUz408KYtmPNfbyXXAhkxncDmc5M8BJ9Jm AQpGyX1Cw3uftlhoTblzJX5GGM5cjGAlBVvHEpoaMsCzulIzeLiGud5I8CT3R9Z/RMLXGM0Qb G6hsWVxzFZ/4hCY8qV/8v+MyQbFN3C+Vo5rLsJ9igHomf0YJ4qKiVwf+XN8nJHLQ+CD2gialX 9viOE/perGQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > @@ -208,8 +208,10 @@ static int __init omapdss_boot_init(void) > > dss =3D of_find_matching_node(NULL, omapdss_of_match); > > - if (dss =3D=3D NULL || !of_device_is_available(dss)) > + if (dss =3D=3D NULL || !of_device_is_available(dss)) { > + of_node_put(dss); > return 0; > + } https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/d= rivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c?id=3D61de49cb596710b918f7a8= 0839f0b6de2017bc32#n203 Can it be nicer to add a jump target here? + if (!dss || !of_device_is_available(dss)) - return 0; + goto put_node; > > omapdss_walk_device(dss, true); > > @@ -234,6 +236,7 @@ static int __init omapdss_boot_init(void) > kfree(n); > } > +put_node: > + of_node_put(dss); > return 0; > } Regards, Markus