[kbuild-all] arch/powerpc/kernel/traps.c:1160:19: error: unused function '__parse_fpscr'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f40ddce88593482919761f74910f42f4b84c004b commit: 7d68c89169508064c460a1208f38ed0589d226fa powerpc/32s: Allow deselecting CONFIG_PPC_FPU on mpc832x date: 3 months ago config: powerpc-randconfig-r026-20210218 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7d68c89169508064c460a1208f38ed0589d226fa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 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 >>): static inline int __parse_fpscr(unsigned long fpscr) ^ 1 error generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for LEDS_TRIGGER_DISK Depends on NEW_LEDS && LEDS_TRIGGERS && (IDE_GD_ATA || ATA Selected by - ADB_PMU_LED_DISK && MACINTOSH_DRIVERS && ADB_PMU_LED && LEDS_CLASS vim +/__parse_fpscr +1160 arch/powerpc/kernel/traps.c 14cf11af6cf608 Paul Mackerras 2005-09-26 1159 5fad293bcbd48d Kumar Gala 2007-02-07 @1160 static inline int __parse_fpscr(unsigned long fpscr) dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1161 { aeb1c0f6ff18f5 Eric W. Biederman 2018-04-17 1162 int ret = FPE_FLTUNK; dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1163 dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1164 /* Invalid operation */ dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1165 if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX)) 5fad293bcbd48d Kumar Gala 2007-02-07 1166 ret = FPE_FLTINV; dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1167 dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1168 /* Overflow */ dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1169 else if ((fpscr & FPSCR_OE) && (fpscr & FPSCR_OX)) 5fad293bcbd48d Kumar Gala 2007-02-07 1170 ret = FPE_FLTOVF; dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1171 dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1172 /* Underflow */ dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1173 else if ((fpscr & FPSCR_UE) && (fpscr & FPSCR_UX)) 5fad293bcbd48d Kumar Gala 2007-02-07 1174 ret = FPE_FLTUND; dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1175 dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1176 /* Divide by zero */ dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1177 else if ((fpscr & FPSCR_ZE) && (fpscr & FPSCR_ZX)) 5fad293bcbd48d Kumar Gala 2007-02-07 1178 ret = FPE_FLTDIV; dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1179 dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1180 /* Inexact result */ dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1181 else if ((fpscr & FPSCR_XE) && (fpscr & FPSCR_XX)) 5fad293bcbd48d Kumar Gala 2007-02-07 1182 ret = FPE_FLTRES; 5fad293bcbd48d Kumar Gala 2007-02-07 1183 5fad293bcbd48d Kumar Gala 2007-02-07 1184 return ret; 5fad293bcbd48d Kumar Gala 2007-02-07 1185 } 5fad293bcbd48d Kumar Gala 2007-02-07 1186 :::::: The code at line 1160 was first introduced by commit :::::: 5fad293bcbd48d9a2370020cf60e4b4a42559b12 [POWERPC] Fixup error handling when emulating a floating point instruction :::::: TO: Kumar Gala <galak(a)kernel.crashing.org&gt; :::::: CC: Kumar Gala <galak(a)kernel.crashing.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org