[PATCH 6.1 292/379] powerpc: Only define __parse_fpscr() when required

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe Leroy <christophe.leroy@xxxxxxxxxx>

[ Upstream commit c7e0d9bb9154c6e6b2ac8746faba27b53393f25e ]

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@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202309210327.WkqSd5Bq-lkp@xxxxxxxxx/
Fixes: b6254ced4da6 ("powerpc/signal: Don't manage floating point regs when no FPU")
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://msgid.link/5de2998c57f3983563b27b39228ea9a7229d4110.1695385984.git.christophe.leroy@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 9bdd79aa51cfc..3956f32682c62 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1164,6 +1164,7 @@ static 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)
 {
-- 
2.42.0






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