This is a note to let you know that I've just added the patch titled
powerpc: Only define __parse_fpscr() when required
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-only-define-__parse_fpscr-when-required.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c94bb87ef35f6796772323a3d7c40b2018ee1823
Author: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Date: Fri Sep 22 14:33:13 2023 +0200
powerpc: Only define __parse_fpscr() when required
[ 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>
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index a08bb7cefdc54..fe912983ced96 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1148,6 +1148,7 @@ 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;
@@ -1174,6 +1175,7 @@ static inline int __parse_fpscr(unsigned long fpscr)
return ret;
}
+#endif
static void parse_fpe(struct pt_regs *regs)
{
