Hi Paul, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 171d4ff79f965c1f164705ef0aaea102a6ad238b commit: 071d2f0b5419d3cf80cc8ba73ec8fe2cedc4cc0c MIPS: r4k-bugs64: Limit R4k bug checks to affected systems date: 12 months ago config: mips-randconfig-r024-20200926 (attached as .config) compiler: mips64el-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/torvalds/linux.git/commit/?id=071d2f0b5419d3cf80cc8ba73ec8fe2cedc4cc0c git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 071d2f0b5419d3cf80cc8ba73ec8fe2cedc4cc0c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): >> arch/mips/kernel/r4k-bugs64.c:171:24: warning: no previous prototype for >> 'do_daddi_ov' [-Wmissing-prototypes] 171 | asmlinkage void __init do_daddi_ov(struct pt_regs *regs) | ^~~~~~~~~~~ vim +/do_daddi_ov +171 arch/mips/kernel/r4k-bugs64.c ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 170 ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 @171 asmlinkage void __init do_daddi_ov(struct pt_regs *regs) ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 172 { c3fc5cd5c5a5f47 arch/mips/kernel/cpu-bugs64.c Ralf Baechle 2013-05-29 173 enum ctx_state prev_state; c3fc5cd5c5a5f47 arch/mips/kernel/cpu-bugs64.c Ralf Baechle 2013-05-29 174 c3fc5cd5c5a5f47 arch/mips/kernel/cpu-bugs64.c Ralf Baechle 2013-05-29 175 prev_state = exception_enter(); ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 176 daddi_ov = 1; ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 177 regs->cp0_epc += 4; c3fc5cd5c5a5f47 arch/mips/kernel/cpu-bugs64.c Ralf Baechle 2013-05-29 178 exception_exit(prev_state); ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 179 } ^1da177e4c3f415 arch/mips/kernel/cpu-bugs64.c Linus Torvalds 2005-04-16 180 :::::: The code at line 171 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torva...@ppc970.osdl.org> :::::: CC: Linus Torvalds <torva...@ppc970.osdl.org> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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