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/mfd-Add-Re... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 5ab6f96a12f4f28d5a283dcf46b004cc653246a1 config: openrisc-randconfig-r001-20210314 (attached as .config) compiler: or1k-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/4d537d85df739a32487e30fb69388b030... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review min-li-xe-renesas-com/mfd-Add-Renesas-Synchronization-Management-Unit-SMU-support/20210314-014512 git checkout 4d537d85df739a32487e30fb69388b030577cb42 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 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 >>): or1k-linux-ld: drivers/mfd/rsmu_spi.o: in function `rsmu_read': or1k-linux-ld: drivers/mfd/rsmu_spi.o: in function `rsmu_write': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org