linux-kernel - [ammarfaizi2-block:palmer/linux/riscv-d1 8/12] arch/riscv/kernel/cpufeature.c:185:6: warning: variable 'cpu_apply

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Message-ID: <202203081742.97KWCv3h-lkp@intel.com>
Date:   Tue, 8 Mar 2022 17:09:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>
Subject: [ammarfaizi2-block:palmer/linux/riscv-d1 8/12]
 arch/riscv/kernel/cpufeature.c:185:6: warning: variable 'cpu_apply_feature'
 set but not used

tree:   https://github.com/ammarfaizi2/linux-block palmer/linux/riscv-d1
head:   b3cda759adb0111b5b3efd3a0b986864b647a94a
commit: 012cee7ecac542dd3206bee731da0868353eef21 [8/12] riscv: add cpufeature handling via alternatives
config: riscv-randconfig-r005-20220308 (https://download.01.org/0day-ci/archive/20220308/202203081742.97KWCv3h-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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/ammarfaizi2/linux-block/commit/012cee7ecac542dd3206bee731da0868353eef21
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block palmer/linux/riscv-d1
        git checkout 012cee7ecac542dd3206bee731da0868353eef21
        # 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 arch/riscv/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/riscv/kernel/cpufeature.c:185:6: warning: variable 'cpu_apply_feature' set but not used [-Wunused-but-set-variable]
           u32 cpu_apply_feature = 0;
               ^
   1 warning generated.


vim +/cpu_apply_feature +185 arch/riscv/kernel/cpufeature.c

   180	
   181	void riscv_cpufeature_patch_func(struct alt_entry *begin, struct alt_entry *end,
   182					 unsigned int stage)
   183	{
   184		u32 cpu_req_feature = cpufeature_probe(stage);
 > 185		u32 cpu_apply_feature = 0;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org