Hi Gabriel, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.6 next-20200412] [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/Gabriel-Krisman-Bertazi/unicode-... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b032227c62939b5481bcd45442b36dfa263f4a7c reproduce: # apt-get install sparse # sparse version: v0.6.1-188-g79f7ac98-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org