tree: https://android.googlesource.com/kernel/common android-4.19-stable head: d04d01063d59d645790c770e4db46842e8c3e01a commit: 3179a1a38d96f565a2229b9244285c6abf62b10a [14825/18759] ANDROID: GKI: clk: Add support for voltage voting config: x86_64-randconfig-a016-20201019 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ea693a162786d933863ab079648d4261ac0ead47) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android-4.19-stable git checkout 3179a1a38d96f565a2229b9244285c6abf62b10a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): int clk_set_flags(struct clk *clk, unsigned long flags) ^ drivers/clk/clk.c:3145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int clk_set_flags(struct clk *clk, unsigned long flags) ^ static void clk_debug_print_hw(struct clk_core *clk, struct seq_file *f) ^ drivers/clk/clk.c:3157:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void clk_debug_print_hw(struct clk_core *clk, struct seq_file *f) ^ static 2 warnings generated. drivers/clk/clk.c:4257: warning: Function parameter or member 'dev' not described in 'devm_clk_unregister' drivers/clk/clk.c:4455: warning: Function parameter or member 'get_hw' not described in 'of_clk_provider' vim +/clk_set_flags +3145 drivers/clk/clk.c 3144 3146 { 3147 if (!clk) 3148 return 0; 3149 3150 if (!clk->core->ops->set_flags) 3151 return -EINVAL; 3152 3153 return clk->core->ops->set_flags(clk->core->hw, flags); 3154 } 3155 EXPORT_SYMBOL_GPL(clk_set_flags); 3156 3158 { 3159 } 3160 EXPORT_SYMBOL(clk_debug_print_hw); 3161 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org