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powerpc: Only define __parse_fpscr() when required
Clang 17 reports:
arch/powerpc/kernel/traps.c:1167:19: error: unused function '__parse_fpscr' [-Werror,-Wunused-function]
__parse_fpscr() is called from two sites. First call is guarded
by #ifdef CONFIG_PPC_FPU_REGS
Second call is guarded by CONFIG_MATH_EMULATION which selects
CONFIG_PPC_FPU_REGS.
So only define __parse_fpscr() when CONFIG_PPC_FPU_REGS is defined.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309210327.WkqSd5Bq-lkp@intel.com/
Fixes: b6254ced4d
("powerpc/signal: Don't manage floating point regs when no FPU")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/5de2998c57f3983563b27b39228ea9a7229d4110.1695385984.git.christophe.leroy@csgroup.eu
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@ -1164,6 +1164,7 @@ void emulate_single_step(struct pt_regs *regs)
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__single_step_exception(regs);
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}
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#ifdef CONFIG_PPC_FPU_REGS
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static inline int __parse_fpscr(unsigned long fpscr)
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{
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int ret = FPE_FLTUNK;
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@ -1190,6 +1191,7 @@ static inline int __parse_fpscr(unsigned long fpscr)
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return ret;
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}
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#endif
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static void parse_fpe(struct pt_regs *regs)
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{
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