tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 47c191411b68a771261be3dc0bd6f68394cef358 commit: 7245fc5bb7a966852d5bd7779d1f5855530b461a [4574/6188] powerpc/math-emu: Remove -w build flag and fix warnings config: powerpc-randconfig-r021-20220907 (https://download.01.org/0day-ci/archive/20220909/202209090343.JPAFJt74-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 1546df49f5a6d09df78f569e4137ddb365a3e827) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7245fc5bb7a966852d5bd7779d1f5855530b461a 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 7245fc5bb7a966852d5bd7779d1f5855530b461a # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/math-emu/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/powerpc/math-emu/fre.c:6:5: warning: no previous prototype for function 'fre' [-Wmissing-prototypes] int fre(void *frD, void *frB) ^ arch/powerpc/math-emu/fre.c:6:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int fre(void *frD, void *frB) ^ static 1 warning generated. -- >> arch/powerpc/math-emu/fsqrt.c:11:1: warning: no previous prototype for function 'fsqrt' [-Wmissing-prototypes] fsqrt(void *frD, void *frB) ^ arch/powerpc/math-emu/fsqrt.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning generated. -- >> arch/powerpc/math-emu/fsqrts.c:12:1: warning: no previous prototype for function 'fsqrts' [-Wmissing-prototypes] fsqrts(void *frD, void *frB) ^ arch/powerpc/math-emu/fsqrts.c:11:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning generated. -- >> arch/powerpc/math-emu/frsqrtes.c:6:5: warning: no previous prototype for function 'frsqrtes' [-Wmissing-prototypes] int frsqrtes(void *frD, void *frB) ^ arch/powerpc/math-emu/frsqrtes.c:6:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int frsqrtes(void *frD, void *frB) ^ static 1 warning generated. -- >> arch/powerpc/math-emu/mtfsf.c:10:1: warning: no previous prototype for function 'mtfsf' [-Wmissing-prototypes] mtfsf(unsigned int FM, u32 *frB) ^ arch/powerpc/math-emu/mtfsf.c:9:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning generated. -- >> arch/powerpc/math-emu/mtfsfi.c:10:1: warning: no previous prototype for function 'mtfsfi' [-Wmissing-prototypes] mtfsfi(unsigned int crfD, unsigned int IMM) ^ arch/powerpc/math-emu/mtfsfi.c:9:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning generated. vim +/fre +6 arch/powerpc/math-emu/fre.c 04ae9001719c3f Benjamin Herrenschmidt 2013-06-09 5 04ae9001719c3f Benjamin Herrenschmidt 2013-06-09 @6 int fre(void *frD, void *frB) :::::: The code at line 6 was first introduced by commit :::::: 04ae9001719c3f0012d239a7c5aa4136f6b6541d powerpc/math-emu: Fix decoding of some instructions :::::: TO: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> :::::: CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
