[frank-w-bpi-r2-4.14:5.15-r2pro 7/92] drivers/soc/mediatek/mtk-pmic-wrap.c:2112:16: warning: no previous prototype for function 'pwrap_node_to_regmap'

[frank-w-bpi-r2-4.14:5.15-r2pro 7/92] drivers/soc/mediatek/mtk-pmic-wrap.c:2112:16: warning: no previous prototype for function 'pwrap_node_to_regmap'

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2493 bytes --]

tree:   https://github.com/frank-w/BPI-R2-4.14 5.15-r2pro
head:   d51ee13774f8993b4ad8a0c42e2e4b761ee630e7
commit: f32d0dbecbd999c6ad5bdf26bdafd8d83d7a3fa4 [7/92] mt6625l: add changes outside driver dir
config: arm64-randconfig-r024-20211205 (https://download.01.org/0day-ci/archive/20211206/202112061808.UsLErsv4-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5f1d1854eb1450d352663ee732235893c5782237)
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/frank-w/BPI-R2-4.14/commit/f32d0dbecbd999c6ad5bdf26bdafd8d83d7a3fa4
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.15-r2pro
        git checkout f32d0dbecbd999c6ad5bdf26bdafd8d83d7a3fa4
        # 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/soc/mediatek/

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

All warnings (new ones prefixed by >>):

>> drivers/soc/mediatek/mtk-pmic-wrap.c:2112:16: warning: no previous prototype for function 'pwrap_node_to_regmap' [-Wmissing-prototypes]
   struct regmap *pwrap_node_to_regmap(struct device_node *np)
                  ^
   drivers/soc/mediatek/mtk-pmic-wrap.c:2112:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct regmap *pwrap_node_to_regmap(struct device_node *np)
   ^
   static 
   1 warning generated.


vim +/pwrap_node_to_regmap +2112 drivers/soc/mediatek/mtk-pmic-wrap.c

  2111	
> 2112	struct regmap *pwrap_node_to_regmap(struct device_node *np)
  2113	{
  2114		struct platform_device *pdev;
  2115		struct pmic_wrapper *wrp;
  2116		pdev = of_find_device_by_node(np);
  2117		if (!pdev)
  2118			return ERR_PTR(-ENODEV);
  2119		wrp = platform_get_drvdata(pdev);
  2120		return wrp->regmap;
  2121	}
  2122	EXPORT_SYMBOL_GPL(pwrap_node_to_regmap);
  2123	

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