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[209.132.180.67]) by mx.google.com with ESMTP id m5si6007619ejr.429.2019.10.19.22.47.49; Sat, 19 Oct 2019 22:48:12 -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="GVKXu4v/"; 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 S1726233AbfJTFqi (ORCPT + 99 others); Sun, 20 Oct 2019 01:46:38 -0400 Received: from mout.web.de ([217.72.192.78]:38055 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725851AbfJTFqi (ORCPT ); Sun, 20 Oct 2019 01:46:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1571550363; bh=x7uTnJsRgEJVyfO+7N1P8ScHIbumAeuC8K7dMT+Hyj8=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=GVKXu4v/SiIevPmdVBS7Rfm4yORg5lcFF8xjkU5OmMot2DCYZ+jqj47GTZMlvgG6D MoQV4vdARwGFzE67LZTbV00ymLx1hVJcFDFGb/FpLsSPF+uDfwGiCMUndPKZnVS3ag s1aOtKCTMYHhyhnS1gDAbnS5F+ImsLNMcvNqwpGc= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([78.48.112.181]) by smtp.web.de (mrweb103 [213.165.67.124]) with ESMTPSA (Nemesis) id 0LpO4v-1hrvsk0ef7-00fBcn; Sun, 20 Oct 2019 07:46:03 +0200 Subject: Re: coccinelle: api/devm_platform_ioremap_resource: remove useless script To: Marc Zyngier , kernel-janitors@vger.kernel.org, Coccinelle Cc: Himanshu Jha , Julia Lawall , Alexandre Belloni , Andy Shevchenko , Arnd Bergmann , Bartosz Golaszewski , Gilles Muller , Greg Kroah-Hartman , Linus Torvalds , Linus Walleij , Masahiro Yamada , Michal Marek , Nicolas Palix , Thomas Gleixner , YueHaibing , LKML References: <693a3b68-a0f1-81fe-40ce-2b6ba189450c@web.de> <868spgzcti.wl-maz@kernel.org> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2 MIME-Version: 1.0 In-Reply-To: <868spgzcti.wl-maz@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:IciyEKuuswWa2NT0frFoyIuRhO2K1QyMc8LxqHO4MZK7TJH1/dL A4qN/Ybt/pboksbF9tT+Ihqz1oXHRlcKF1L7K3FIlthexVcSO7yjvkt63GWwyVFJok7pqab xXJb3rHzHuMXDLjRQ2f1KZVT+UNHhFmWn5abevQf0brP4nsCFgZqLlKbjzZLnshDEnR/TXm 6a8akdypiafqM0SDo9nSg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:xOHEacZFLho=:CLAXTGNUUBIBB5DWSUbC7k GNVCgBR6VoumUpG7s0VtNvuKTXwiOLAX3umokRf6iRVGAVPcxOn7i+Vkbm1CjRDNaACqydOGa nLZMWsOStk5cJLCHvNgjqrGKB8hnCGEAguJYpP5r5tDCgnue428l5m9w4CtrGM7h5BJp52Zww 4tMM69wLahV1d7QUoQuYKP9v8hnNwr/OTFnw0Q0Tpa+qv7N3dOjHm0f/VvZrTVekFFnpVmg+S ZNyMfdxtSfXkPrTpxdAZ2IgCI8bYQmEtOf5c4pE1m6eZE3iHovB/H+Tlu+F0k/uyd3qqOEhUn uGukebR0Jc/eyoRNCszk4Axs243F6Vnlq4qvFVQPROQhKqBi0ycpd5wkikFEu8NhEahVV1RBy v6llC8435ab947kuY4XMubx19opaaLvPuimr6eQAIysAHghRjHCxjpPf+9Z9UnlllcDMsNKl4 vDi1gFwGgeujLB5Qh6TfVG9crQ9Cu22JHFxU5uYOdNeb5AlLlLlmS7aD6zhVXNrZHjQHKv5Im W/e5/tM+KdUm5XYZfJhyfrOUii1bAZv/tjk9fUDlBrOK2LEl/yfFVl4wjTW7jgD6IU/IQdHkw 71yY6tG+QHsQAAQZku8LHkaInCJx1CziCAZXEpilG4y0VDW8MMy05wE/DEv8qKh9cFU6O6P+U UVAlw1uNZ9q+pXmgVMdFNS13q0n92WEl5zSxpfLflCDW2PXS9bsvRCcI8B4kICCsl04ZCy10B vecIaaqBHiOOdzH3qBMPhQcynNyh1AWOKvxN4IXaV7XG94JFvaAwpc5jQ2LF1HDcYsKokdQJ9 ng4wpDUCh6HwJDEjhKO0v5DIscufZk4V311/1vwJGj/HDm6M2MpWktvqWoKYsQEPRojefvBeD MJx+AdSOBbbj3jYOgL2wjuFjovscKbdWiwFdHNauo4JZQ5ojags5z2eDW/sT2xHeRWlI/qfQf 3912M4yokXLWXeQq6S5GlWv9ITuGxKONy1BZPNjbgBf2FtlMqHGVaw5MNy9igBHZXaDykPaiG gAvNH0IQXRXmmUOapCpl/744w6ZG4JlgNMMg3C9IB/5/zuVR/U0QY15CTK2+qQyjhTMbl73KW kppyh1i/FxiWbr+6giCQo43285fzQzzGISrCDiBTbHsfv8Jg+ZnYo7luAMa4LpsJF22VlEagY 30QEAWST9EMqSiJaG7rrhb0BeWyiUq2mP3ifcj1Y8d1fBNLRRKE/Qwb1xcZPZAbldxFDwJPd6 bCocDD/byIL/ms01huKrI+3l0B8VHb+9azuoHaSpQugAtQh8axpHHOD/jAEc= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> I think part of the issue is that the script reports a WARNING Would anybody like to change this category to =E2=80=9CINFO=E2=80=9D? >> How much does this information influence really the stress tolerance >> and change resistance (or acceptance) for the presented collateral evol= ution? >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/= scripts/coccinelle/api/devm_platform_ioremap_resource.cocci > > -ENOPARSE. * Automated processes can trigger also big amounts of possible adjustments= . * The software development capacity will vary for affected components during the years. * Implementing changes is a recurring project management task, isn't it? >>> for something that is definitely correct code, >> >> Can related software improvement possibilities be taken into account >> again under other circumstances? > > These patches provide no improvement whatsoever. * Do you find information from the description of a corresponding commit 7945f929f1a77a1c8887a97ca07f87626858ff42 ("drivers: provide devm_platform_ioremap_resource()") reasonable? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/d= rivers/base/platform.c * How do you think about to compare any differences with software build results? > As pointed out, they mostly introduce bugs. Would you like to check any error statistics in more detail? > Providing Coccinelle scripts that scream about perfectly valid code is p= ointless, They usually point opportunities out for further collateral evolution, don't they? > and the result is actively harmful. You might not like some changes for a while. > If said script was providing a correct semantic patch I got the impression that this can also happen often enough. Would you like to check the concrete transformation failure rate once more= ? > instead of being an incentive for people to churn untested patches > that span the whole tree, that'd be a different story. Various developers got motivated to achieve something (possible improvemen= ts?) also by the means of available software analysis tools. Mistakes can then happen as usual during such adjustment attempts. > But that's not what this is about. I guess that your software development concerns can be clarified a bit mor= e. Regards, Markus