Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/min-li-xe-renesas-com/misc-Add-R... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git ebfbc46b35cb70b9fbd88f376d7a33b79f60adff config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/2b3ca22001b1bb3ea6466c970c9026457... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review min-li-xe-renesas-com/misc-Add-Renesas-Synchronization-Management-Unit-SMU-support/20210318-020345 git checkout 2b3ca22001b1bb3ea6466c970c9026457d5b6fa3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 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 >>): -- make[2]: *** [scripts/Makefile.headersinst:63: usr/include/linux/rsmu.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1335: headers] Error 2 make[1]: Target 'headers_install' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'headers_install' not remade because of errors. -- make[2]: *** [scripts/Makefile.headersinst:63: usr/include/linux/rsmu.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1335: headers] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] make[2]: *** [scripts/Makefile.headersinst:63: usr/include/linux/rsmu.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1335: headers] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org