Hi Srinivas, I love your patch! Yet something to improve: [auto build test ERROR on abelloni/rtc-next] [also build test ERROR on v5.14-rc1 next-20210714] [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/Srinivas-Neeli/rtc-zynqmp-Add-ca... base: https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next config: h8300-randconfig-c003-20210714 (attached as .config) compiler: h8300-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/41973a1184ee0279fa1fbc827aa1c2af1... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Srinivas-Neeli/rtc-zynqmp-Add-calibration-set-and-get-support/20210714-160903 git checkout 41973a1184ee0279fa1fbc827aa1c2af1adc8f01 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=h8300 SHELL=/bin/bash 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 >>): h8300-linux-ld: drivers/rtc/rtc-zynqmp.o: in function `xlnx_rtc_read_offset': h8300-linux-ld: drivers/rtc/rtc-zynqmp.o: in function `xlnx_rtc_set_offset': rtc-zynqmp.c:(.text+0x54f): undefined reference to `__divdi3' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org