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 C3850C433F5 for ; Mon, 31 Jan 2022 14:29:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236393AbiAaO33 (ORCPT ); Mon, 31 Jan 2022 09:29:29 -0500 Received: from mga04.intel.com ([192.55.52.120]:16893 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236177AbiAaO32 (ORCPT ); Mon, 31 Jan 2022 09:29:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643639368; x=1675175368; h=date:from:to:cc:subject:message-id:mime-version; bh=t27D63dmU5/P6d/whQMsjWjh1WkpG0ASB00upGtkJzY=; b=PFlB+obD37Y1N+B0dpMMs9MxYPtnxCMAfjjrflYOeYtTdVD0P4IGz+w2 4TYyCuiFGMBz1WmiFMJaT6C+HpgJPIH9XiTwQUqoovAzSLDc4vi+9I2Y+ UntqMDCjOWraB/YK47VJ9ej+JPPk0NSasvd2toYO/JJt5sAr5LVob5c22 1HMSoqjQ6gSPoYyxAej/v5Y8B1+0cT8bKQgJiDD/hWJA8dgDSzJBry6pk MsfCgO7X9ysOJRAQZ/5+U6meOByRjCOfb7/yMTKqiP6UYu45GTJfTe6J7 2Lt8iGmA2aTx/SwFcGixGhqdMJ7+BxJBuJ3Amdk/+KsS3vGs/fXU8jYid g==; X-IronPort-AV: E=McAfee;i="6200,9189,10243"; a="246303702" X-IronPort-AV: E=Sophos;i="5.88,331,1635231600"; d="scan'208";a="246303702" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jan 2022 06:29:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,331,1635231600"; d="scan'208";a="768603543" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by fmsmga006.fm.intel.com with ESMTP; 31 Jan 2022 06:29:26 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1nEXgM-000Rzt-9p; Mon, 31 Jan 2022 14:29:26 +0000 Date: Mon, 31 Jan 2022 22:29:12 +0800 From: kernel test robot To: Tom Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Emil Renner Berthing Subject: [esmil:visionfive 29/62] drivers/soc/sifive/sifive_l2_cache.c:142:19: warning: result of comparison of constant 36507222016 with expression of type 'unsigned long' is always false Message-ID: <202201312255.K6MgEaRZ-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/esmil/linux visionfive head: 8c758048edfd830baceb991167131c9d55786544 commit: 601a2f4e945153ebae8645596eda50ea39369c88 [29/62] sifive/sifive_l2_cache: Add sifive_l2_flush64_range function config: riscv-randconfig-r004-20220130 (https://download.01.org/0day-ci/archive/20220131/202201312255.K6MgEaRZ-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2cdbaca3943a4d6259119f185656328bd3805b68) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/esmil/linux/commit/601a2f4e945153ebae8645596eda50ea39369c88 git remote add esmil https://github.com/esmil/linux git fetch --no-tags esmil visionfive git checkout 601a2f4e945153ebae8645596eda50ea39369c88 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/soc/sifive/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): drivers/soc/sifive/sifive_l2_cache.c:152:3: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration] writeq(line, l2_base + SIFIVE_L2_FLUSH64); ^ >> drivers/soc/sifive/sifive_l2_cache.c:142:19: warning: result of comparison of constant 36507222016 with expression of type 'unsigned long' is always false [-Wtautological-constant-out-of-range-compare] (start + len) > (CONFIG_SIFIVE_L2_FLUSH_START + ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. vim +142 drivers/soc/sifive/sifive_l2_cache.c 123 124 #ifdef CONFIG_SIFIVE_L2_FLUSH 125 void sifive_l2_flush64_range(unsigned long start, unsigned long len) 126 { 127 unsigned long line; 128 129 if(!l2_base) { 130 pr_warn("L2CACHE: base addr invalid, skipping flush\n"); 131 return; 132 } 133 134 /* TODO: if (len == 0), skipping flush or going on? */ 135 if(!len) { 136 pr_debug("L2CACHE: flush64 range @ 0x%lx(len:0)\n", start); 137 return; 138 } 139 140 /* make sure the address is in the range */ 141 if(start < CONFIG_SIFIVE_L2_FLUSH_START || > 142 (start + len) > (CONFIG_SIFIVE_L2_FLUSH_START + 143 CONFIG_SIFIVE_L2_FLUSH_SIZE)) { 144 pr_warn("L2CACHE: flush64 out of range: %lx(%lx), skip flush\n", 145 start, len); 146 return; 147 } 148 149 mb(); /* sync */ 150 for (line = start; line < start + len; 151 line += SIFIVE_L2_FLUSH64_LINE_LEN) { > 152 writeq(line, l2_base + SIFIVE_L2_FLUSH64); 153 mb(); 154 } 155 } 156 EXPORT_SYMBOL_GPL(sifive_l2_flush64_range); 157 #endif 158 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org