tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/domain_cleanup head: 9f2ec21368f318d9bfcb5cec966c24c00c6681be commit: 2a22c2b61b583fe4d76d1d1a956f4d4e047f12c4 [38/39] nios2: Bulk conversion to generic_handle_domain_irq() config: nios2-randconfig-r006-20210517 (attached as .config) compiler: nios2-linux-gcc (GCC) 9.3.0 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/maz/arm-platforms.git/com... git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git git fetch --no-tags arm-platforms irq/domain_cleanup git checkout 2a22c2b61b583fe4d76d1d1a956f4d4e047f12c4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=nios2 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/nios2/kernel/irq.c:19:17: warning: no previous prototype for 'do_IRQ' [-Wmissing-prototypes] 19 | asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs) | ^~~~~~ arch/nios2/kernel/irq.c: In function 'do_IRQ': 24 | generic_handle_domain_irqg(NULL, hwirq); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ | generic_handle_domain_irq arch/nios2/kernel/irq.c: At top level: arch/nios2/kernel/irq.c:61:13: warning: no previous prototype for 'init_IRQ' [-Wmissing-prototypes] 61 | void __init init_IRQ(void) | ^~~~~~~~ cc1: some warnings being treated as errors vim +24 arch/nios2/kernel/irq.c 18 19 asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs) 20 { 21 struct pt_regs *oldregs = set_irq_regs(regs); 22 23 irq_enter(); 25 irq_exit(); 26 27 set_irq_regs(oldregs); 28 } 29 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org