Hi Arnd, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 71941773e143369a73c9c4a3b62fbb60736a1182 commit: 6f5d248d05db9c4991366154f1a657a630faa583 [122/11953] ARM: iop32x: use GENERIC_IRQ_MULTI_HANDLER config: arm-randconfig-r006-20220106 (https://download.01.org/0day-ci/archive/20220312/202203120529.J5NCI7FE-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-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/commit/?id=6f5d248d05db9c4991366154f1a657a630faa583 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 6f5d248d05db9c4991366154f1a657a630faa583 # 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=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/arm/mach-iop32x/irq.c:62:6: warning: no previous prototype for 'iop_handle_irq' [-Wmissing-prototypes] 62 | void iop_handle_irq(struct pt_regs *regs) | ^~~~~~~~~~~~~~ -- >> arch/arm/mach-iop32x/cp6.c:10:6: warning: no previous prototype for 'iop_enable_cp6' [-Wmissing-prototypes] 10 | void iop_enable_cp6(void) | ^~~~~~~~~~~~~~ arch/arm/mach-iop32x/cp6.c:43:13: warning: no previous prototype for 'iop_init_cp6_handler' [-Wmissing-prototypes] 43 | void __init iop_init_cp6_handler(void) | ^~~~~~~~~~~~~~~~~~~~ vim +/iop_handle_irq +62 arch/arm/mach-iop32x/irq.c 61 > 62 void iop_handle_irq(struct pt_regs *regs) 63 { 64 u32 mask; 65 66 iop_enable_cp6(); 67 68 do { 69 mask = iintsrc_read(); 70 if (mask) 71 generic_handle_irq(fls(mask)); 72 } while (mask); 73 } 74 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
