tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: aa14a3016182213f022068500486ef3bcacb9006 commit: 1397e99a0cfdce6d35cb9ae5d558428c8a88cc90 [12218/12292] Merge remote-tracking branch 'h8300/h8300-next' config: h8300-randconfig-r015-20210910 (attached as .config) compiler: h8300-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/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 1397e99a0cfdce6d35cb9ae5d558428c8a88cc90 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=h8300 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 >>): drivers/irqchip/irq-renesas-h8300h.c: In function 'h8300h_ack_irq': 66 | int bit; | ^~~ cc1: all warnings being treated as errors vim +/bit +66 drivers/irqchip/irq-renesas-h8300h.c 8bd55b5fce8011 Yoshinori Sato 2020-04-15 63 8bd55b5fce8011 Yoshinori Sato 2020-04-15 64 static void h8300h_ack_irq(struct irq_data *data) 8bd55b5fce8011 Yoshinori Sato 2020-04-15 65 { 8bd55b5fce8011 Yoshinori Sato 2020-04-15 @66 int bit; 8bd55b5fce8011 Yoshinori Sato 2020-04-15 67 int irq = data->irq - 12; 8bd55b5fce8011 Yoshinori Sato 2020-04-15 68 8bd55b5fce8011 Yoshinori Sato 2020-04-15 69 if (irq < 6) 8bd55b5fce8011 Yoshinori Sato 2020-04-15 70 ctrl_bclr(irq, ISR); 8a7644821ae00b Yoshinori Sato 2015-05-10 71 } 8a7644821ae00b Yoshinori Sato 2015-05-10 72 :::::: The code at line 66 was first introduced by commit :::::: 8bd55b5fce8011d0026f7d233f7b45788f01ad0c irq-renesas-h8300h: Fix external interrupt contorol. :::::: TO: Yoshinori Sato <ysato(a)users.sourceforge.jp&gt; :::::: CC: Yoshinori Sato <ysato(a)users.sourceforge.jp&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org