tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git master head: 391ce485ced0e47bf8d2ce8bc32bb87887e16656 commit: d10ef57285dc3c6092c8c535c0bbd77e1cf09b08 [1850/2375] headers/deps: cpumask: Optimize <linux/cpumask.h>, remove <linux/cpumask_api.h> config: mips-vocore2_defconfig (https://download.01.org/0day-ci/archive/20220110/202201101720.QTGys8N9-lk...) compiler: mipsel-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://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=... git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git git fetch --no-tags mingo-tip master git checkout d10ef57285dc3c6092c8c535c0bbd77e1cf09b08 # 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=mips SHELL=/bin/bash arch/mips/ralink/ 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 >>): arch/mips/ralink/mt7620.c: In function 'mt7620_calc_rate': 59 | do_div(t, div); | ^~~~~~ cc1: some warnings being treated as errors vim +/do_div +59 arch/mips/ralink/mt7620.c 594bde683d36c3 John Crispin 2013-03-21 51 ded1e9d727f0e7 Gabor Juhos 2013-08-23 52 static __init u32 ded1e9d727f0e7 Gabor Juhos 2013-08-23 53 mt7620_calc_rate(u32 ref_rate, u32 mul, u32 div) ded1e9d727f0e7 Gabor Juhos 2013-08-23 54 { ded1e9d727f0e7 Gabor Juhos 2013-08-23 55 u64 t; ded1e9d727f0e7 Gabor Juhos 2013-08-23 56 ded1e9d727f0e7 Gabor Juhos 2013-08-23 57 t = ref_rate; ded1e9d727f0e7 Gabor Juhos 2013-08-23 58 t *= mul; ded1e9d727f0e7 Gabor Juhos 2013-08-23 @59 do_div(t, div); ded1e9d727f0e7 Gabor Juhos 2013-08-23 60 ded1e9d727f0e7 Gabor Juhos 2013-08-23 61 return t; ded1e9d727f0e7 Gabor Juhos 2013-08-23 62 } ded1e9d727f0e7 Gabor Juhos 2013-08-23 63 :::::: The code at line 59 was first introduced by commit :::::: ded1e9d727f0e7cb1cf7f243dac2a87974ae048f MIPS: ralink: mt7620: Improve clock frequency detection :::::: TO: Gabor Juhos <juhosg(a)openwrt.org&gt; :::::: CC: Ralf Baechle <ralf(a)linux-mips.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org