tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d4a0ae62a277377de396850ed4b709b6bd9b7326 commit: 37f4270132af31dd08a209799d420f72bfddb49c [6791/7915] mm: Start tracking VMAs with maple tree config: mips-maltaup_defconfig (https://download.01.org/0day-ci/archive/20220224/202202241635.ib4YRtz7-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=37f4270132af31dd08a209799d420f72bfddb49c 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 37f4270132af31dd08a209799d420f72bfddb49c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arch/mips/kernel/mips-mt.c:50:6: warning: no previous prototype for function 'mips_mt_regdump' [-Wmissing-prototypes] void mips_mt_regdump(unsigned long mvpctl) ^ arch/mips/kernel/mips-mt.c:50:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void mips_mt_regdump(unsigned long mvpctl) ^ static arch/mips/kernel/mips-mt.c:159:6: warning: no previous prototype for function 'mips_mt_set_cpuoptions' [-Wmissing-prototypes] void mips_mt_set_cpuoptions(void) ^ arch/mips/kernel/mips-mt.c:159:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void mips_mt_set_cpuoptions(void) ^ static >> arch/mips/kernel/mips-mt.c:233:19: error: conflicting types for 'mt_init' static int __init mt_init(void) ^ include/linux/maple_tree.h:589:20: note: previous definition is here static inline void mt_init(struct maple_tree *mt) ^ >> arch/mips/kernel/mips-mt.c:246:1: error: incompatible function pointer types initializing 'initcall_t' (aka 'int (*)(void)') with an expression of type 'void (struct maple_tree *)' [-Werror,-Wincompatible-function-pointer-types] subsys_initcall(mt_init); ^ ~~~~~~~ include/linux/init.h:286:30: note: expanded from macro 'subsys_initcall' #define subsys_initcall(fn) __define_initcall(fn, 4) ^ ~~ include/linux/init.h:262:35: note: expanded from macro '__define_initcall' #define __define_initcall(fn, id) ___define_initcall(fn, id, .initcall##id) ^ ~~ include/linux/init.h:260:2: note: expanded from macro '___define_initcall' __unique_initcall(fn, id, __sec, __initcall_id(fn)) ^ ~~ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:291:1: note: expanded from here __initcall__kmod_mips_mt__393_246_mt_init4 ^ include/linux/init.h:249:20: note: expanded from macro '____define_initcall' static initcall_t __name __used \ ^ 2 warnings and 2 errors generated. vim +246 arch/mips/kernel/mips-mt.c 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 232 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 @233 static int __init mt_init(void) 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 234 { 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 235 struct class *mtc; 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 236 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 237 mtc = class_create(THIS_MODULE, "mt"); 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 238 if (IS_ERR(mtc)) 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 239 return PTR_ERR(mtc); 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 240 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 241 mt_class = mtc; 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 242 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 243 return 0; 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 244 } 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 245 27a3bbaf4b1e23 Ralf Baechle 2007-02-07 @246 subsys_initcall(mt_init); :::::: The code at line 246 was first introduced by commit :::::: 27a3bbaf4b1e23a3afbae4d9f72b51a36859f74a [MIPS] VPE: Sprinkle device model code into code to make udev happier. :::::: TO: Ralf Baechle <ralf@xxxxxxxxxxxxxx> :::::: CC: Ralf Baechle <ralf@xxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
