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-allyesconfig (https://download.01.org/0day-ci/archive/20220224/202202241817.MXoE0NcM-lkp@xxxxxxxxx/config) compiler: mips-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/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=gcc-11.2.0 make.cross 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 'mips_mt_regdump' [-Wmissing-prototypes] 50 | void mips_mt_regdump(unsigned long mvpctl) | ^~~~~~~~~~~~~~~ arch/mips/kernel/mips-mt.c:159:6: warning: no previous prototype for 'mips_mt_set_cpuoptions' [-Wmissing-prototypes] 159 | void mips_mt_set_cpuoptions(void) | ^~~~~~~~~~~~~~~~~~~~~~ >> arch/mips/kernel/mips-mt.c:233:19: error: conflicting types for 'mt_init'; have 'int(void)' 233 | static int __init mt_init(void) | ^~~~~~~ In file included from include/linux/mm_types.h:12, from include/linux/mmzone.h:21, from include/linux/gfp.h:6, from include/linux/radix-tree.h:12, from include/linux/idr.h:15, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/energy_model.h:7, from include/linux/device.h:16, from arch/mips/kernel/mips-mt.c:7: include/linux/maple_tree.h:589:20: note: previous definition of 'mt_init' with type 'void(struct maple_tree *)' 589 | static inline void mt_init(struct maple_tree *mt) | ^~~~~~~ vim +233 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 :::::: The code at line 233 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
