Hi Paul, I love your patch! Yet something to improve: [auto build test ERROR on abelloni/rtc-next] [also build test ERROR on v5.18-rc3 next-20220414] [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/intel-lab-lkp/linux/commits/Paul-Cercueil/rtc-ingenic-various-updates/20220419-025341 base: https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next config: sparc64-randconfig-r024-20220418 (https://download.01.org/0day-ci/archive/20220419/202204191251.t9r8gFyI-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 11.2.0 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/intel-lab-lkp/linux/commit/ba459adc8c83dbdc469d0c6b5d57fd95d834513a git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Paul-Cercueil/rtc-ingenic-various-updates/20220419-025341 git checkout ba459adc8c83dbdc469d0c6b5d57fd95d834513a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from <command-line>: drivers/rtc/rtc-jz4740.c: In function 'jz4740_rtc_set_offset': >> include/linux/compiler_types.h:346:45: error: call to '__compiletime_assert_229' declared with attribute error: FIELD_PREP: value too large for the field 346 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:327:25: note: in definition of macro '__compiletime_assert' 327 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:346:9: note: in expansion of macro '_compiletime_assert' 346 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:65:17: note: in expansion of macro 'BUILD_BUG_ON_MSG' 65 | BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \ | ^~~~~~~~~~~~~~~~ include/linux/bitfield.h:111:17: note: in expansion of macro '__BF_FIELD_CHECK' 111 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~ drivers/rtc/rtc-jz4740.c:261:17: note: in expansion of macro 'FIELD_PREP' 261 | nc1hz = FIELD_PREP(JZ_RTC_REGULATOR_NC1HZ_MASK, nc1hz); | ^~~~~~~~~~ vim +/__compiletime_assert_229 +346 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 332 eb5c2d4b45e3d2 Will Deacon 2020-07-21 333 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 334 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 335 eb5c2d4b45e3d2 Will Deacon 2020-07-21 336 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 337 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 338 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 339 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 340 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 341 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 342 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 343 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 344 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 345 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @346 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 347 -- 0-DAY CI Kernel Test Service https://01.org/lkp