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=-7.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable 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 EABCBC433E1 for ; Mon, 18 May 2020 00:35:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1768207BB for ; Mon, 18 May 2020 00:35:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726720AbgERAfm (ORCPT ); Sun, 17 May 2020 20:35:42 -0400 Received: from mga05.intel.com ([192.55.52.43]:57991 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726675AbgERAfl (ORCPT ); Sun, 17 May 2020 20:35:41 -0400 IronPort-SDR: GUNjLEvbktaBOcgsW3shhbdbt27my5hD9hhFL1tSHDgSpEwCsP7g6oGOjZFFv/G31VX04KckN5 haMdhfYegl0w== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 May 2020 17:35:41 -0700 IronPort-SDR: NOguugL+eLy+5DTJF5CAdWogARdgcPfmnpRPmLq5S2lKx1qlqZhXbmYI8MNAx5Uhz0TrIi5Xyc zqlC6c4b9XWA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,405,1583222400"; d="scan'208";a="373226041" Received: from pl-dbox.sh.intel.com (HELO intel.com) ([10.239.159.39]) by fmsmga001.fm.intel.com with ESMTP; 17 May 2020 17:35:38 -0700 Date: Mon, 18 May 2020 08:34:17 +0800 From: Philip Li To: Matthew Wilcox Cc: kbuild test robot , Michal Simek , kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Andrew Morton , Linux Memory Management List , Stefan Asserhall , linux-scsi@vger.kernel.org, linux-parisc@vger.kernel.org Subject: Re: [kbuild-all] Re: drivers/scsi/ncr53c8xx.c:5306:9: sparse: sparse: cast truncates bits from constant value (58f becomes 8f) Message-ID: <20200518003417.GA4344@intel.com> References: <202005160227.h6Ieqnmz%lkp@intel.com> <20200515190026.GI16070@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200515190026.GI16070@bombadil.infradead.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On Fri, May 15, 2020 at 12:00:26PM -0700, Matthew Wilcox wrote: > On Sat, May 16, 2020 at 02:20:38AM +0800, kbuild test robot wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > head: 051e6b7e34b9bd24f46725f74994a4d3a653966e > > commit: 06e85c7e9a1c1356038936566fc23f7c0d363b96 asm-generic: fix unistd_32.h generation format > > date: 5 weeks ago > > I don't see how that commit in any way reflects this error message. > > > reproduce: > > # apt-get install sparse > > # sparse version: v0.6.1-193-gb8fad4bc-dirty > > git checkout 06e85c7e9a1c1356038936566fc23f7c0d363b96 > > make ARCH=x86_64 allmodconfig > > I can't even see a way to build the ncr53c8xx module with this config. > Unless somebody reenabled EISA on x86, the only way I can see to > still build this driver is on PA-RISC with the ZALON code. sorry, the reproduce steps here is wrong, it is not for x86_64. We will fix this. > > > make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' > > > > If you fix the issue, kindly add following tag as appropriate > > Reported-by: kbuild test robot > > > > > > sparse warnings: (new ones prefixed by >>) > > > > >> drivers/scsi/ncr53c8xx.c:5306:9: sparse: sparse: cast truncates bits from constant value (58f becomes 8f) > > > > ^1da177e4c3f41 Linus Torvalds 2005-04-16 @5306 OUTW (nc_sien , STO|HTH|MA|SGE|UDC|RST|PAR); > > This seems entirely intentional. > > Something like this should do the job (whitespace damaged): > > +++ b/drivers/scsi/ncr53c8xx.h > @@ -407,7 +407,7 @@ > > #ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS > /* Only 8 or 32 bit transfers allowed */ > -#define OUTW_OFF(o, val) do { writeb((char)((val) >> 8), (char __iomem *)np->reg + ncr_offw(o)); writeb((char)(val), (char __iomem *)np->reg + ncr_offw(o) + 1); } while (0) > +#define OUTW_OFF(o, val) do { writeb((char)((val) >> 8), (char __iomem *)np->reg + ncr_offw(o)); writeb((char)((val) & 0xff), (char __iomem *)np->reg + ncr_offw(o) + 1); } while (0) > #else > #define OUTW_OFF(o, val) writew_raw((val), (char __iomem *)np->reg + ncr_offw(o)) > #endif > > _______________________________________________ > kbuild-all mailing list -- kbuild-all@lists.01.org > To unsubscribe send an email to kbuild-all-leave@lists.01.org