arch/powerpc/kernel/traps.c:1167:19: error: unused function '__parse_fpscr'
From: kernel test robot
Date: Sat Sep 30 2023 - 09:41:02 EST
Hi Christophe,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9f3ebbef746f89f860a90ced99a359202ea86fde
commit: ca13c130a43fe3ab625d22ada0a61e5c0b612229 powerpc/4xx: Remove WatchdogHandler() to fix no previous prototype error
date: 6 weeks ago
config: powerpc-kilauea_defconfig (https://download.01.org/0day-ci/archive/20230930/202309302131.bsuutuxs-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230930/202309302131.bsuutuxs-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309302131.bsuutuxs-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
>> arch/powerpc/kernel/traps.c:1167:19: error: unused function '__parse_fpscr' [-Werror,-Wunused-function]
1167 | static inline int __parse_fpscr(unsigned long fpscr)
| ^
1 error generated.
vim +/__parse_fpscr +1167 arch/powerpc/kernel/traps.c
14cf11af6cf608 Paul Mackerras 2005-09-26 1166
5fad293bcbd48d Kumar Gala 2007-02-07 @1167 static inline int __parse_fpscr(unsigned long fpscr)
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1168 {
aeb1c0f6ff18f5 Eric W. Biederman 2018-04-17 1169 int ret = FPE_FLTUNK;
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1170
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1171 /* Invalid operation */
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1172 if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX))
5fad293bcbd48d Kumar Gala 2007-02-07 1173 ret = FPE_FLTINV;
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1174
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1175 /* Overflow */
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1176 else if ((fpscr & FPSCR_OE) && (fpscr & FPSCR_OX))
5fad293bcbd48d Kumar Gala 2007-02-07 1177 ret = FPE_FLTOVF;
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1178
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1179 /* Underflow */
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1180 else if ((fpscr & FPSCR_UE) && (fpscr & FPSCR_UX))
5fad293bcbd48d Kumar Gala 2007-02-07 1181 ret = FPE_FLTUND;
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1182
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1183 /* Divide by zero */
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1184 else if ((fpscr & FPSCR_ZE) && (fpscr & FPSCR_ZX))
5fad293bcbd48d Kumar Gala 2007-02-07 1185 ret = FPE_FLTDIV;
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1186
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1187 /* Inexact result */
dc1c1ca3dcd94c Stephen Rothwell 2005-10-01 1188 else if ((fpscr & FPSCR_XE) && (fpscr & FPSCR_XX))
5fad293bcbd48d Kumar Gala 2007-02-07 1189 ret = FPE_FLTRES;
5fad293bcbd48d Kumar Gala 2007-02-07 1190
5fad293bcbd48d Kumar Gala 2007-02-07 1191 return ret;
5fad293bcbd48d Kumar Gala 2007-02-07 1192 }
5fad293bcbd48d Kumar Gala 2007-02-07 1193
:::::: The code at line 1167 was first introduced by commit
:::::: 5fad293bcbd48d9a2370020cf60e4b4a42559b12 [POWERPC] Fixup error handling when emulating a floating point instruction
:::::: TO: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
:::::: CC: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
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