Hi Alejandro, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linux/master linus/master v5.16-rc2 next-20211118] [cannot apply to drm-intel/for-linux-next mkl-can-next/testing] [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/Alejandro-Colomar/linux-stddef-h... base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: ia64-randconfig-r016-20211122 (attached as .config) compiler: ia64-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/0day-ci/linux/commit/f4bee28948d96faeac8bdf5ac6d2abdd7... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Alejandro-Colomar/linux-stddef-h-linux-offsetof-h-Split-offsetof-into-a-separate-header/20211120-220144 git checkout f4bee28948d96faeac8bdf5ac6d2abdd718d1db3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:6, from include/linux/cpumask.h:10, from include/linux/mm_types_task.h:14, from include/linux/mm_types.h:5, from include/linux/buildid.h:5, from include/linux/module.h:14, from drivers/net/wireless/intel/iwlwifi/pcie/drv.c:9: drivers/net/wireless/intel/iwlwifi/pcie/drv.c: In function 'iwl_pci_find_dev_info': 12 | #define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]) + __must_be_array(a)) | ^ drivers/net/wireless/intel/iwlwifi/pcie/drv.c:1344:18: note: in expansion of macro 'ARRAY_SIZE' 1344 | for (i = ARRAY_SIZE(iwl_dev_info_table) - 1; i >= 0; i--) { | ^~~~~~~~~~ vim +12 include/linux/array_size.h 6 7 8 /** 9 * ARRAY_SIZE - get the number of elements in array @a 10 * @a: array to be sized 11 */ 13 14 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org