[vireshk-pm:opp/clk 48/48] drivers/opp/core.c:430:6: warning: no previous prototype for function '_invalid_freq_op'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git opp/clk
head:   3c6c953fd159e8e0a31b2b0ba71f6e783a183b81
commit: 3c6c953fd159e8e0a31b2b0ba71f6e783a183b81 [48/48] OPP: Allow multiple clocks for a device
config: arm64-randconfig-r012-20220609 (https://download.01.org/0day-ci/archive/20220609/202206092215.7H70yWMv-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 971e13d69e3e7b687213fef22952be6a328c426c)
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://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/commit/?id=3c6c953fd159e8e0a31b2b0ba71f6e783a183b81
        git remote add vireshk-pm https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git
        git fetch --no-tags vireshk-pm opp/clk
        git checkout 3c6c953fd159e8e0a31b2b0ba71f6e783a183b81
        # 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=arm64 SHELL=/bin/bash drivers/opp/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/opp/core.c:430:6: warning: no previous prototype for function '_invalid_freq_op' [-Wmissing-prototypes]
   bool _invalid_freq_op(struct opp_table *opp_table)
        ^
   drivers/opp/core.c:430:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool _invalid_freq_op(struct opp_table *opp_table)
   ^
   static 
   drivers/opp/core.c:1635:43: warning: variable 'clk_size' set but not used [-Wunused-but-set-variable]
           int supply_count, supply_size, icc_size, clk_size;
                                                    ^
   2 warnings generated.


vim +/_invalid_freq_op +430 drivers/opp/core.c

   428	
   429	/* Helpers for invalid operations */
 > 430	bool _invalid_freq_op(struct opp_table *opp_table)
   431	{
   432		return WARN_ON(opp_table->clk_count != 1);
   433	}
   434	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp