Hi Tim, I love your patch! Yet something to improve: [auto build test ERROR on ljones-mfd/for-mfd-next] [also build test ERROR on hwmon/hwmon-next linus/master v5.7-rc5 next-20200515] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Tim-Harvey/Add-support-for-the-Gateworks-System-Controller/20200515-232142 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> drivers/mfd/gateworks-gsc.c:270:14: error: 'gsc_id_table' undeclared here (not in a function) 270 | .id_table = gsc_id_table, | ^~~~~~~~~~~~ vim +/gsc_id_table +270 drivers/mfd/gateworks-gsc.c 264 265 static struct i2c_driver gsc_driver = { 266 .driver = { 267 .name = "gateworks-gsc", 268 .of_match_table = gsc_of_match, 269 }, > 270 .id_table = gsc_id_table, 271 .probe_new = gsc_probe, 272 .remove = gsc_remove, 273 }; 274 module_i2c_driver(gsc_driver); 275 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org