Hi "Johnson, Thank you for the patch! Yet something to improve: [auto build test ERROR on abelloni/rtc-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Johnson-CH-Chen/rtc-ds1374-wdt-Use-watchdog-core-for-watchdog-part/20200701-181230 base: https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next config: x86_64-randconfig-a015-20200701 (attached as .config) compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "devm_watchdog_register_device" [drivers/rtc/rtc-ds1374.ko] undefined! >> ERROR: modpost: "watchdog_init_timeout" [drivers/rtc/rtc-ds1374.ko] undefined! >> ERROR: modpost: "watchdog_unregister_device" [drivers/rtc/rtc-ds1374.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org