tree: https://github.com/tobetter/linux odroid-5.15.y head: 678861f23d9c5a26fb838c37ec2f4112749f6a17 commit: d5f4cb5822810fb9310d976216330c988e94848d [1/76] ODROID-XU4: drm/exynos/hdmi: add 'HPD' and 'vout' as boot parameters config: nios2-allmodconfig (attached as .config) compiler: nios2-linux-gcc (GCC) 11.2.0 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 # https://github.com/tobetter/linux/commit/d5f4cb5822810fb9310d976216330c98... git remote add tobetter https://github.com/tobetter/linux git fetch --no-tags tobetter odroid-5.15.y git checkout d5f4cb5822810fb9310d976216330c988e94848d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 165 | static int __init hdmi_hpd_enable(char *str) | ^~~~~~~~~~~~~~~ 151 | static int __init dvi_force_enable(char *str) | ^~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/hdmi_hpd_enable +165 drivers/gpu/drm/exynos/exynos_hdmi.c 150 152 { 153 if (!strcmp(str, "dvi")) { 154 gdvi_mode = true; 155 pr_info("hdmi: using DVI mode\n"); 156 } else { 157 gdvi_mode = false; 158 pr_info("hdmi: using HDMI mode\n"); 159 } 160 161 return 0; 162 } 163 __setup("vout=", dvi_force_enable); 164 166 { 167 if (!strcmp(str, "false")) { 168 gEnableHPD = false; 169 } 170 171 return 0; 172 } 173 __setup("HPD=", hdmi_hpd_enable); 174 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org