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X-IronPort-AV: E=McAfee;i="6200,9189,10301"; a="240013422" X-IronPort-AV: E=Sophos;i="5.90,221,1643702400"; d="scan'208";a="240013422" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 18:15:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,221,1643702400"; d="scan'208";a="836107212" Received: from lkp-server01.sh.intel.com (HELO 3965e2759b93) ([10.239.97.150]) by fmsmga005.fm.intel.com with ESMTP; 29 Mar 2022 18:15:36 -0700 Received: from kbuild by 3965e2759b93 with local (Exim 4.92) (envelope-from ) id 1nZMvv-0000qF-Ox; Wed, 30 Mar 2022 01:15:35 +0000 Date: Wed, 30 Mar 2022 09:15:11 +0800 From: kernel test robot To: Suzuki K Poulose Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org, Todd Kjos , Mike Leach , Mathieu Poirier , Anshuman Khandual , Qais Yousef Subject: [ammarfaizi2-block:google/android/kernel/common/android12-trusty-5.10 3280/5872] drivers/hwtracing/coresight/coresight-etm4x-core.c:118:5: warning: no previous prototype for function 'ete_sysreg_read' Message-ID: <202203300915.vUQ47LCW-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) List-Id: Hi Suzuki, FYI, the error/warning still remains. tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-trusty-5.10 head: b60d55f33484d855a546f7cfc59a28a5771e8bee commit: 82ce4a8af88d25d3f75de6e8437de3d2f049cac3 [3280/5872] FROMLIST: coresight: ete: Add support for ETE sysreg access config: arm64-randconfig-r036-20220327 (https://download.01.org/0day-ci/archive/20220330/202203300915.vUQ47LCW-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/ammarfaizi2/linux-block/commit/82ce4a8af88d25d3f75de6e8437de3d2f049cac3 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-trusty-5.10 git checkout 82ce4a8af88d25d3f75de6e8437de3d2f049cac3 # 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=arm64 SHELL=/bin/bash drivers/hwtracing/coresight/ mm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/hwtracing/coresight/coresight-etm4x-core.c:118:5: warning: no previous prototype for function 'ete_sysreg_read' [-Wmissing-prototypes] u64 ete_sysreg_read(u32 offset, bool _relaxed, bool _64bit) ^ drivers/hwtracing/coresight/coresight-etm4x-core.c:118:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u64 ete_sysreg_read(u32 offset, bool _relaxed, bool _64bit) ^ static >> drivers/hwtracing/coresight/coresight-etm4x-core.c:135:6: warning: no previous prototype for function 'ete_sysreg_write' [-Wmissing-prototypes] void ete_sysreg_write(u64 val, u32 offset, bool _relaxed, bool _64bit) ^ drivers/hwtracing/coresight/coresight-etm4x-core.c:135:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void ete_sysreg_write(u64 val, u32 offset, bool _relaxed, bool _64bit) ^ static 2 warnings generated. vim +/ete_sysreg_read +118 drivers/hwtracing/coresight/coresight-etm4x-core.c 117 > 118 u64 ete_sysreg_read(u32 offset, bool _relaxed, bool _64bit) 119 { 120 u64 res = 0; 121 122 switch (offset) { 123 ETE_READ_CASES(res) 124 default : 125 pr_warn_ratelimited("ete: trying to read unsupported register @%x\n", 126 offset); 127 } 128 129 if (!_relaxed) 130 __iormb(res); /* Imitate the !relaxed I/O helpers */ 131 132 return res; 133 } 134 > 135 void ete_sysreg_write(u64 val, u32 offset, bool _relaxed, bool _64bit) 136 { 137 if (!_relaxed) 138 __iowmb(); /* Imitate the !relaxed I/O helpers */ 139 if (!_64bit) 140 val &= GENMASK(31, 0); 141 142 switch (offset) { 143 ETE_WRITE_CASES(val) 144 default : 145 pr_warn_ratelimited("ete: trying to write to unsupported register @%x\n", 146 offset); 147 } 148 } 149 -- 0-DAY CI Kernel Test Service https://01.org/lkp