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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 0BD95C2BB1D for ; Fri, 17 Apr 2020 21:27:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9C5220857 for ; Fri, 17 Apr 2020 21:27:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728067AbgDQV1U (ORCPT ); Fri, 17 Apr 2020 17:27:20 -0400 Received: from smtprelay0153.hostedemail.com ([216.40.44.153]:40672 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726129AbgDQV1S (ORCPT ); Fri, 17 Apr 2020 17:27:18 -0400 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay01.hostedemail.com (Postfix) with ESMTP id 7C2DF100E7B43; Fri, 17 Apr 2020 21:27:17 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: cloth96_79c5a18faf91b X-Filterd-Recvd-Size: 1404 Received: from XPS-9350.home (unknown [47.151.136.130]) (Authenticated sender: joe@perches.com) by omf06.hostedemail.com (Postfix) with ESMTPA; Fri, 17 Apr 2020 21:27:16 +0000 (UTC) Message-ID: Subject: Re: checkpatch.pl warning for "return" with value From: Joe Perches To: Luben Tuikov , Andy Whitcroft Cc: LKML Date: Fri, 17 Apr 2020 14:25:04 -0700 In-Reply-To: <8859753b-c7c9-78ec-20cc-ce424b436b13@amd.com> References: <1a47c5c428968a0e1d0ac5b92ce7ebdd4014fd38.camel@perches.com> <8859753b-c7c9-78ec-20cc-ce424b436b13@amd.com> Content-Type: text/plain; charset="ISO-8859-1" User-Agent: Evolution 3.34.1-2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2020-04-17 at 14:52 -0400, Luben Tuikov wrote: > Also checking and returning from a function, doesn't > always have to be binary. It could be, > > if (A) { > ...; > return X; > } else if (B) { > ...; > return Y; > } else { > ...; > return Z; > } > } > > And interestingly, checkpatch.pl doesn't complain for > the triplet above. But if I remove condition B, above, > it does complain. My recollection is false positives existed so the else if case was not wanted.