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t=1561109844; bh=kT4uxcn8PVrD/eGpDIX0oHe4BUNKCY9msva6hg3SIZQ=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=TD4qocmgEZ9An9idJU6ffuqI+DiOJf8r3XHj1NmfILGML2HXRs16i8WntIYUY/Y76 HgSbUSodbag7XqyEEUN6fjq2485zpYom/Cx2zJ+qaJBcFILN22A45P1Zu7Rxvq3ozF sk2tjfzaseCibihOgoEkzC2LzF7LzLPFiPevg69Q= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.131.156.129]) by smtp.web.de (mrweb103 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MeBHO-1hxb7C2OCc-00PwYB; Fri, 21 Jun 2019 11:37:24 +0200 Subject: Re: Coccinelle: Add a SmPL script for the reconsideration of redundant dev_err() calls To: Julia Lawall , kernel-janitors@vger.kernel.org Cc: Gilles Muller , Masahiro Yamada , Michal Marek , Nicolas Palix , Coccinelle , LKML , Ding Xiang References: <05d85182-7ec3-8fc1-4bcd-fd2528de3a40@web.de> <34d528db-5582-5fe2-caeb-89bcb07a1d30@web.de> <13890878-9e5f-f297-7f7c-bcc1212d83b7@web.de> From: Markus Elfring Openpgp: preference=signencrypt Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:8f5MELeKAQ6fkJTLdIoQ0KIBVHR3p4OOBUaOuQL4n/k98RiXtfW YZ0gWEI1IfIrsKBkYs3Jy6ei2qt486abpEigUrAS2X1u5F4E4N0MHTe8X540a69EoLd+3gc 1wKkAxff5BQwxxpMLv44cnE65RtmWjcL+bJlEr1aqiQ4ctqMVjjPQuVeM7pT7rSCGb9CMkb +wpPdcLsTkY4kfYX6JhVg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:sqgGBKnD12Q=:Pp0Ad7XgaZj64+RPjLsyyJ 0Tvvi++5nK9tPWgycnibOzu9cFL0hRl61crF5I6l8C878ulaVfpBqqmhS0kmSMlXYd+co6r9u M4/EZ2JNmpi3es9bBxJSyppumjuwe7+dJamGV3MYKmpNhCqNhox62aMBGbCDl7GZJdFQRZi9J 4Bwl2qYDeA4XSZ7Q8QudcMZcYUFgZRqvAcV8U0xE8tN6DdM88eVRu5+anftW+Nhi+jrRLuX6Z 8HREhNZEM15UFiwcexH7VvxEFp3xFwgr5YK613RSUUY5Nfm/uq+LGfAYrdojdUZl8yaGeqMZ/ Tn8e6Mc/4+xSTe/4UXy8CnymxROrXtMr/J/YHHphFOYeEwRJBEQ2RB6S9db6nlL7cfWRXXGMO 6QH2Uf2Uo0N95Ie33Q3hLv3zHPepisHNDE9qBxhoiKtgD1NnrafWn+mXCSqVbEVrGIs0NlolA +OCaPpNCI2jeUy30v6i6+Jnd7msjg1kNOBteEgncO2gQpuiq/p+EgKEbLS2Gdxd9RTrt7NwjJ Un+tgbx9dfZsTPZsxieiFIKLIuDqLACInS8o0jpzQvd2GzhR4BeIHJ3OFkjum8VFkU/nDxh/I DtWdWCqYuCOF7Ce0Q3r8v4DDscA+95vQNWWmArI+jQBs/OTT3v8/V8X5jpzQlcWWHUGcFbKeJ bbjyY/x0TKrTxZPFbD67cMai/z3ZTKthYFHbz5kOehm3ByohEjur3lazXDsOZXtOlh9aeSIPp RXmnKjitmkepS9SEnuQ56TUjIdB7X43frc/p/pDoqhp18e8/y+aIwCJMBTOqiFHbuUzl/tmkj yp7MJzYqBDbeqQOBkJtXMpxpZXSUDkGgiFiQ9nRy4en+Ty9H1n0fOabJo4Hw+rh94jYlS1GHV oZdcbI4wqZe4/Jkrfq1rVk49rqNNehuSAYBuciX06tDyMXcIeGG+z31y2OSUXYH0AuAdROTat jfOz3H2fyQ5gTqcK1Jz/lrDVNB4CqqQoOwZikilDDrypRTGpsUGBo Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I still don't see the point of specifying return. Why not just S, where= S > is a statement metavariable? Do you find the following SmPL change specification more appropriate? @deletion depends on patch@ expression e; statement s; @@ e =3D devm_ioremap_resource(...); if (IS_ERR(e)) ( -{ - dev_err(...); s -} | { <+... - dev_err(...); ...+> } ) Will any additional constraints become relevant? >> Would this approach need a version check for the Coccinelle software? > > Why would that be necessary? I guess that the application of SmPL disjunctions for if statements can trigger development concerns. Regards, Markus