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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0C2EC19F2D for ; Tue, 9 Aug 2022 13:10:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243439AbiHINK4 (ORCPT ); Tue, 9 Aug 2022 09:10:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237990AbiHINKw (ORCPT ); Tue, 9 Aug 2022 09:10:52 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B9C664D4 for ; Tue, 9 Aug 2022 06:10:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660050650; x=1691586650; h=date:from:to:cc:subject:message-id:mime-version; bh=57XyRoGe+iqcJsX2dk3gnHDLo+yDUu9UuYsBk73he+Q=; b=IgWFOH5Z16Vkgzl7rn9uaYnrAIrKLb3eorArLfLMC9S2Bl8Ovd+BdC3m ujnL683Sa9Gyci1k52FrkSUOu2jN7pis7hBTKhqeVH/J8fW9BlaMMOtKA UPcaZL/F1SFuYNtAYle+1uOHhhdxR/tzIk+REvLvsq9r8KDy75Fbp/ABg o6dV9cQ6gUbtV8ykEVTUtVRzoytT40+46rEcXpviOq4xOhlPT5chI/aG2 n+zHXFSDAX55xUTn2EmtDar32v3osTe5aGNb7CPovDfqn6WKXFjbFvUDM 476Ey78IZnWL4iyg1n8MWuySC00wccEUZ8ixq7HeXqDFXXtses+EIWiNs A==; X-IronPort-AV: E=McAfee;i="6400,9594,10433"; a="292071360" X-IronPort-AV: E=Sophos;i="5.93,224,1654585200"; d="scan'208";a="292071360" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Aug 2022 06:10:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,224,1654585200"; d="scan'208";a="604751166" Received: from lkp-server01.sh.intel.com (HELO e0eace57cfef) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 09 Aug 2022 06:10:48 -0700 Received: from kbuild by e0eace57cfef with local (Exim 4.96) (envelope-from ) id 1oLP0R-000Mwt-19; Tue, 09 Aug 2022 13:10:47 +0000 Date: Tue, 9 Aug 2022 21:10:18 +0800 From: kernel test robot To: Bart Van Assche Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, "Martin K. Petersen" , Bean Huo Subject: drivers/ufs/host/tc-dwc-g210-pltfrm.c:36:34: warning: unused variable 'tc_dwc_g210_pltfm_match' Message-ID: <202208092130.BVmamibT-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Bart, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: eb555cb5b794f4e12a9897f3d46d5a72104cd4a7 commit: dd11376b9f1b73aca3f8c6eb541486bbb6996f05 scsi: ufs: Split the drivers/scsi/ufs directory date: 3 months ago config: s390-randconfig-r044-20220808 (https://download.01.org/0day-ci/archive/20220809/202208092130.BVmamibT-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd11376b9f1b73aca3f8c6eb541486bbb6996f05 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout dd11376b9f1b73aca3f8c6eb541486bbb6996f05 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/ufs/host/ lib/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from drivers/ufs/host/tc-dwc-g210-pltfrm.c:17: In file included from drivers/ufs/host/ufshcd-pltfrm.h:8: In file included from include/ufs/ufshcd.h:17: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from drivers/ufs/host/tc-dwc-g210-pltfrm.c:17: In file included from drivers/ufs/host/ufshcd-pltfrm.h:8: In file included from include/ufs/ufshcd.h:17: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from drivers/ufs/host/tc-dwc-g210-pltfrm.c:17: In file included from drivers/ufs/host/ufshcd-pltfrm.h:8: In file included from include/ufs/ufshcd.h:17: In file included from include/linux/blk-mq.h:8: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/ufs/host/tc-dwc-g210-pltfrm.c:36:34: warning: unused variable 'tc_dwc_g210_pltfm_match' [-Wunused-const-variable] static const struct of_device_id tc_dwc_g210_pltfm_match[] = { ^ 13 warnings generated. -- In file included from drivers/ufs/host/ufs-hisi.c:13: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from drivers/ufs/host/ufs-hisi.c:13: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from drivers/ufs/host/ufs-hisi.c:13: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/ufs/host/ufs-hisi.c:561:34: warning: unused variable 'ufs_hisi_of_match' [-Wunused-const-variable] static const struct of_device_id ufs_hisi_of_match[] = { ^ 13 warnings generated. vim +/tc_dwc_g210_pltfm_match +36 drivers/ufs/host/tc-dwc-g210-pltfrm.c fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 35 fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 @36 static const struct of_device_id tc_dwc_g210_pltfm_match[] = { fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 37 { fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 38 .compatible = "snps,g210-tc-6.00-20bit", fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 39 .data = &tc_dwc_g210_20bit_pltfm_hba_vops, fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 40 }, fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 41 { fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 42 .compatible = "snps,g210-tc-6.00-40bit", fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 43 .data = &tc_dwc_g210_40bit_pltfm_hba_vops, fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 44 }, fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 45 { }, fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 46 }; fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 47 MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match); fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 48 :::::: The code at line 36 was first introduced by commit :::::: fc040a3fc47cad038f774275ea61fe6d5b57d7cc ufs: add TC G210 platform driver :::::: TO: Joao Pinto :::::: CC: Martin K. Petersen -- 0-DAY CI Kernel Test Service https://01.org/lkp