tree: https://github.com/frank-w/BPI-R2-4.14 5.7-rc head: 5e53b203ecc2519bfa641c2d3b98b16492865841 commit: 2f85f3115a33554612364e146c42be44e42ab101 [14/45] mt6625l: add changes outside driver dir config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 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 git checkout 2f85f3115a33554612364e146c42be44e42ab101 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): 2022 | struct regmap *pwrap_node_to_regmap(struct device_node *np) | ^~~~~~~~~~~~~~~~~~~~ vim +/pwrap_node_to_regmap +2022 drivers/soc/mediatek/mtk-pmic-wrap.c 2021 2023 { 2024 struct platform_device *pdev; 2025 struct pmic_wrapper *wrp; 2026 pdev = of_find_device_by_node(np); 2027 if (!pdev) 2028 return ERR_PTR(-ENODEV); 2029 wrp = platform_get_drvdata(pdev); 2030 return wrp->regmap; 2031 } 2032 EXPORT_SYMBOL_GPL(pwrap_node_to_regmap); 2033 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org