tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers head: 4c707c1c0de83967079b4e385012fa5b00e2cd11 commit: 9b3c6ae85a5f3f3a0471ed5fba5c33471c2d9290 [2114/2384] headers/deps: irq: Optimize <linux/irq.h> dependencies, remove <linux/slab.h> config: mips-randconfig-r034-20220113 (https://download.01.org/0day-ci/archive/20220115/202201151230.NFPpJt0T-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 sched/headers git checkout 9b3c6ae85a5f3f3a0471ed5fba5c33471c2d9290 # 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/vr41xx/common/ 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 >>): In file included from include/linux/irq.h:19, from include/linux/irqdesc.h:6, from arch/mips/vr41xx/common/irq.c:7: arch/mips/include/asm/irq.h:23:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'init_IRQ' 23 | extern void __init init_IRQ(void); | ^~~~~~~~ arch/mips/vr41xx/common/irq.c:22:5: warning: no previous prototype for 'cascade_irq' [-Wmissing-prototypes] 22 | int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int)) | ^~~~~~~~~~~ 105 | void __init arch_init_irq(void) | ^~~~~~~~~~~~~ vim +105 arch/mips/vr41xx/common/irq.c 979934da9e7a00 Yoichi Yuasa 2005-09-03 104 979934da9e7a00 Yoichi Yuasa 2005-09-03 @105 void __init arch_init_irq(void) :::::: The code at line 105 was first introduced by commit :::::: 979934da9e7a0005bd9c8b1d7d00febb59ff67f7 [PATCH] mips: update IRQ handling for vr41xx :::::: TO: Yoichi Yuasa <yuasa(a)hh.iij4u.or.jp&gt; :::::: CC: Linus Torvalds <torvalds(a)evo.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org