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Subject[PATCH] powerpc: Only define __parse_fpscr() when required
Date
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: b6254ced4da6 ("powerpc/signal: Don't manage floating point regs when no FPU")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/kernel/traps.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index eeff136b83d9..a52c786c2aec 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1164,6 +1164,7 @@ void emulate_single_step(struct pt_regs *regs)
__single_step_exception(regs);
}

+#ifdef CONFIG_PPC_FPU_REGS
static inline int __parse_fpscr(unsigned long fpscr)
{
int ret = FPE_FLTUNK;
@@ -1190,6 +1191,7 @@ static inline int __parse_fpscr(unsigned long fpscr)

return ret;
}
+#endif

static void parse_fpe(struct pt_regs *regs)
{
--
2.41.0
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