Hi Vadim, I love your patch! Yet something to improve: [auto build test ERROR on hwmon/hwmon-next] [also build test ERROR on robh/for-next v5.12-rc8 next-20210419] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Vadim-Pasternak/Add-support-for-... base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: sh-allmodconfig (attached as .config) compiler: sh4-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/d106a4d0141a89fe7b41d016067a7dbba... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vadim-Pasternak/Add-support-for-MPS-Multi-phase-mp2888-controller/20210419-210711 git checkout d106a4d0141a89fe7b41d016067a7dbba730c932 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=sh 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 >>, old ones prefixed by <<): ERROR: modpost: "__delay" [drivers/net/mdio/mdio-cavium.ko] undefined! ERROR: modpost: "__udivdi3" [fs/btrfs/btrfs.ko] undefined! ERROR: modpost: "__umoddi3" [fs/btrfs/btrfs.ko] undefined! Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org