tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f00397ee41c79b6155b9b44abd0055b2c0621349 commit: 2ff8a1eeb5aa8bb471f3756a695b8b69841eb61f [4650/5787] phy: Add Sparx5 ethernet serdes PHY driver config: powerpc64-randconfig-r003-20210320 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 436c6c9c20cc522c92a923440a5fc509c342a7db) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 2ff8a1eeb5aa8bb471f3756a695b8b69841eb61f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 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 >>): static int sparx5_sd25g28_config(struct sparx5_serdes_macro *macro, bool reset) ^ 1 warning generated. vim +/sparx5_sd25g28_config +1807 drivers/phy/microchip/sparx5_serdes.c 1806 1808 { 1809 struct sparx5_sd25g28_mode_preset mode; 1810 struct sparx5_sd25g28_media_preset media = media_presets_25g[macro->media]; 1811 struct sparx5_sd25g28_args args = { 1812 .rxinvert = 1, 1813 .txinvert = 0, 1814 .txswing = 240, 1815 .com_pll_reserve = 0xf, 1816 .reg_rst = reset, 1817 }; 1818 struct sparx5_sd25g28_params params; 1819 int err; 1820 1821 err = sparx5_sd10g25_get_mode_preset(macro, &mode); 1822 if (err) 1823 return err; 1824 sparx5_sd25g28_get_params(macro, &media, &mode, &args, &params); 1825 sparx5_sd25g28_reset(macro->priv->regs, &params, macro->stpidx); 1826 return sparx5_sd25g28_apply_params(macro->priv->dev, 1827 macro->priv->regs, 1828 &params, 1829 macro->stpidx); 1830 } 1831 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org