tree: https://github.com/miquelraynal/linux-0day.git perso/nand-next/flags head: c5212e24213cba25bcc57e3bbe0781f3e9d83611 commit: 239f1a097e7517b69e4ddd6f12b972d046ec38ad [84/102] fixup! use field get instead of defining obscure values config: h8300-randconfig-r004-20200512 (attached as .config) compiler: h8300-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 239f1a097e7517b69e4ddd6f12b972d046ec38ad # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/mtd/nand/raw/nand_base.c: In function 'nand_get_bits_per_cell': 4654 | return FIELD_GET(GENMASK(3, 2), cellinfo) + 1; | ^~~~~~~~~ | FOLL_GET cc1: some warnings being treated as errors vim +4654 drivers/mtd/nand/raw/nand_base.c 4650 4651 /* Extract the bits of per cell from the 3rd byte of the extended ID */ 4652 static int nand_get_bits_per_cell(u8 cellinfo) 4653 { 4655 } 4656 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org