Hi Gabriel, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.17-rc4] [cannot apply to next-20180508] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Gabriel-Krisman-Bertazi/NLS-refactor-and-UTF-8-normalization/20180509-190115 config: mips-malta_kvm_defconfig (attached as .config) compiler: mipsel-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 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 make.cross ARCH=mips All errors (new ones prefixed by >>): WARNING: modpost: missing MODULE_LICENSE() in fs/nls/nls_default.o see include/linux/module.h for more information >> ERROR: "default_charset" [fs/nls/nls_base.ko] undefined! --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation