Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp1043080pxf; Thu, 25 Mar 2021 22:55:41 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyidZtQknVm3uxTtHuxrrhGHbXk5/ZE+8MUSZJDZJJzkSpIbxsz5XDG+ZeHtsvd9k8wOcrW X-Received: by 2002:a50:fc08:: with SMTP id i8mr8030366edr.277.1616738141111; Thu, 25 Mar 2021 22:55:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1616738141; cv=none; d=google.com; s=arc-20160816; b=JQET9CSM8CnHD0fIU++6JkxxErEI2olDZj418vD4ERUvXEibuvslRmcGs3320A0bNP U3PDiSitgLie15ZLbI32FbFJHIqt9MjaGsNjldWMcA3CSgqyQa04LbiDA5UQbwsvQB11 rmxuwmFVwq6oQkDdbKZdGobU1G++2fFx96v1vK2VjF/LQQcKjs9MjB4VVxEeVgSo+Mlz Var1Pw2FaWldjbPIcoBDSIjYxim4rpaHcZkyxBV21+TA3tjGnLLdcmqSd1P8Ghy/TO6I HZqGoIRovdNl8I9XdeEQ1ZEIeo5oM4qnRlApEslE5/wb8FHns7CqjlOA+CYP7LRVRYBn R1eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from:dkim-signature; bh=Y5ZjdJD9lzvGZs8O1aH02ljto+6/HMHLz2PN6E96Pug=; b=uMVHuqleq9KzOoqSJVeK508KtiCzukhoTyoNVtDahe6tPjKsr1wQj2+koPgZ/AxxBt EXu/Oa36OpqRAfGJGiCfJtfHPf3HgWGRlRhKXIcPTLTyR+zlklgLuaKnoO3J79je7uWF 29Uvy6M8hou3pxVbmMGnGnKyhpam51clm6hKb3sxNO0ZZdt049jozHIkni7nh/Gmjieu 7Bs/old0QkF0snjyPOqvUCe6MhblZ2bsX6qe3ZF7R3Qb/xWUIo+ArCKFfkUBF1b7Cftr 0SywSFneAcdqrn1wH5N0a5OiqW+PT7gEFnXhCMrr0BJ33mmp0aqPJCmawqEasrE//4f/ n3Uw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@axtens.net header.s=google header.b=CaEdMjdP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id l19si5721870ejz.43.2021.03.25.22.55.17; Thu, 25 Mar 2021 22:55:41 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@axtens.net header.s=google header.b=CaEdMjdP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229486AbhCZFxx (ORCPT + 99 others); Fri, 26 Mar 2021 01:53:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229733AbhCZFxe (ORCPT ); Fri, 26 Mar 2021 01:53:34 -0400 Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46F01C0613B0 for ; Thu, 25 Mar 2021 22:53:34 -0700 (PDT) Received: by mail-pg1-x536.google.com with SMTP id e33so3850929pgm.13 for ; Thu, 25 Mar 2021 22:53:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axtens.net; s=google; h=from:to:cc:subject:in-reply-to:references:date:message-id :mime-version; bh=Y5ZjdJD9lzvGZs8O1aH02ljto+6/HMHLz2PN6E96Pug=; b=CaEdMjdPFsNQtsnqEoUfORzxLDuQRxtrsYrOLPFikD4kq50sV2x5oio9MhZoEoc5iG E0DqeYaqmycRLMslOfJS+tMMcH2XwClWM3P2iEKzn0sBU8i/KIHI35ZFLUYdbyvWPMww JI4jBgbJDInR8yZiOsMCKKkSIda15ScyLLBiY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=Y5ZjdJD9lzvGZs8O1aH02ljto+6/HMHLz2PN6E96Pug=; b=NfOCtqYlT1KOaYfofR88xzF0gx48p34AE90iNGSjokIKN3+kPn9wW+g7PejDGv6Z4Y lmmjqGiN6u2wQRKJOzrPGBxMjLCyxE0pNcJCXNV+zKkem4hO2SC6J+6YMubJQiEuW7B2 oh0V71TnlR06FE1PU8h0JQ45JWFciEhK/ldTPMtSzJ6EIA9KtbDMTpGdo0tsm91lq/o/ Jc64JEKqM/N2Kq8PtBeRJzENFsfGqryqwjBxWIoZUDaoLbxBIonJtlQx8BGKk01U/kPv E2ZyUeoQMOSI+hLfVPSzfG2GPNhNVbKWhQzOyUni4Fvm8fZhbIAiTELAQiPiADd9j/so 6rGQ== X-Gm-Message-State: AOAM530BcCUV4fdQW3yGrEksQAc1j33eURpihwEY4o8JZe8YcwJgSCmS i9qSA+nSv3bISijPOlrpzVnk5w== X-Received: by 2002:a05:6a00:72b:b029:218:6603:a6a9 with SMTP id 11-20020a056a00072bb02902186603a6a9mr11018722pfm.78.1616738013763; Thu, 25 Mar 2021 22:53:33 -0700 (PDT) Received: from localhost (2001-44b8-111e-5c00-39c5-e677-fdb8-5d64.static.ipv6.internode.on.net. [2001:44b8:111e:5c00:39c5:e677:fdb8:5d64]) by smtp.gmail.com with ESMTPSA id l190sm7708477pfl.73.2021.03.25.22.53.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Mar 2021 22:53:33 -0700 (PDT) From: Daniel Axtens To: Jiapeng Chong , mpe@ellerman.id.au Cc: Jiapeng Chong , paulus@samba.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc/iommu/debug: Remove redundant NULL check In-Reply-To: <1616406217-94635-1-git-send-email-jiapeng.chong@linux.alibaba.com> References: <1616406217-94635-1-git-send-email-jiapeng.chong@linux.alibaba.com> Date: Fri, 26 Mar 2021 16:53:30 +1100 Message-ID: <87r1k2795x.fsf@linkitivity.dja.id.au> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Jiapeng Chong, writes: > Fix the following coccicheck warnings: > > ./fs/io_uring.c:5989:4-9: WARNING: NULL check before some freeing > functions is not needed. This looks correct to me, and matches the description of debugfs_remove in Documentation/filesystems/debugfs.rst. If you have a number of similar fixes it might be helpful to do them in a single bigger patch, but I'm not sure if coccicheck reports much else as I don't have coccinelle installed at the moment. Reviewed-by: Daniel Axtens Kind regards, Daniel