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=-4.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 C2A4AC4320A for ; Fri, 20 Aug 2021 06:31:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7DA161029 for ; Fri, 20 Aug 2021 06:31:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238483AbhHTGcU (ORCPT ); Fri, 20 Aug 2021 02:32:20 -0400 Received: from conssluserg-03.nifty.com ([210.131.2.82]:28422 "EHLO conssluserg-03.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235390AbhHTGcT (ORCPT ); Fri, 20 Aug 2021 02:32:19 -0400 X-Greylist: delayed 437 seconds by postgrey-1.27 at vger.kernel.org; Fri, 20 Aug 2021 02:32:18 EDT Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) (authenticated) by conssluserg-03.nifty.com with ESMTP id 17K6VRXq012217; Fri, 20 Aug 2021 15:31:27 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-03.nifty.com 17K6VRXq012217 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1629441087; bh=TojktwP6N8rx3aEpHXABD9Q2v3NaByV5fctRNxyQ1lM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=oQwLhsWbCTPQ3ZOJH7U9xuACDZvRFg+jpKSNwuwgSesk3b6LUwbcuDMXGY0rjTePc XFbYiinKguYIyw0USOXBcnfXJqi208c8NNJ+34mdExiv1ZP/2Dgo358SwX+vioyhqB I5dF4F8zUcrWHz74sPdr91fmCwP+UqtePkCsHitdmbIRmw2eM7mepW2dv3opGqdSkl ya4ELonjFPg1KB0Cc904zSC9GGm0Hq+4ePGWnA6w4SVLM4DiB593E5QAN0lteAwFPa 82P69aqWejzoTodA2kOAof0ZbY8fRPrUaSqARaqGmQ1vkgmVZvqm6U+HRUmi2SPbkp rOkUOsZXrXLRA== X-Nifty-SrcIP: [209.85.214.182] Received: by mail-pl1-f182.google.com with SMTP id j2so982856pll.1; Thu, 19 Aug 2021 23:31:27 -0700 (PDT) X-Gm-Message-State: AOAM533cIN8+YQt1PfNmMGUZG0cmBYhO5POqSaE8sfOxkmv9J8LGWMnQ Od5S83xBxz/PlXlSzXzICK3C708vjOyKK3Nc4oE= X-Google-Smtp-Source: ABdhPJxm1c+K8hJI3yOQe8W1swKjLIcrowW4t+e6n93MsGMM7cZCPfXqhfw9XxoWs2MrtgGFdjYlReXCVk4zYGZecvs= X-Received: by 2002:a17:90a:ea87:: with SMTP id h7mr3035645pjz.198.1629441086554; Thu, 19 Aug 2021 23:31:26 -0700 (PDT) MIME-Version: 1.0 References: <20210820161445.6eadab0c@canb.auug.org.au> In-Reply-To: <20210820161445.6eadab0c@canb.auug.org.au> From: Masahiro Yamada Date: Fri, 20 Aug 2021 15:30:49 +0900 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: linux-next: build warning after merge of the scsi tree To: Stephen Rothwell Cc: James Bottomley , Linux Kernel Mailing List , Linux Next Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 20, 2021 at 3:14 PM Stephen Rothwell wrote: > > Hi all, > > After merging the scsi tree, today's linux-next build (powerpc > ppc64_defconfig) produced this warning: > > drivers/scsi/Makefile:197: FORCE prerequisite is missing > > Exposed by commit > > 0fc7db58e2a6 ("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk") > > I don't know why this warning only appeared after the merge of the scsi > tree, since the offending line has been in this Makefile since 2017 You are doing incremental builds. Presumably, because include/scsi/scsi_devinfo.h is touched by the following commit in the scsi tree. commit f591a2e0548da88130c7b1c79f1f735273adc683 Author: Martin Kepplinger Date: Sun Jul 4 09:54:01 2021 +0200 Kbuild rebuilds scsi_devinfo_tbl.o due to the timestamp update, then displays the warning. If the scsi maintainers want to fix this issue, a patch is already there. https://lore.kernel.org/patchwork/patch/1478797/ Since this is a bug, it can get in the scsi tree any time. -- Best Regards Masahiro Yamada