[PATCH] ARM: arch/arm/kernel/signal.c: resolve set-but-not-used warning
From: Ethan Nelson-Moore <hidden>
Date: 2026-06-08 05:09:43
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
If neither CONFIG_IWMMXT nor CONFIG_VFP are enabled (which is the case, for example, in rpc_defconfig), the variable "aux" is set but not used, which generates a warning during W=1 builds. Resolve this issue by only defining the variable if it will be used. Signed-off-by: Ethan Nelson-Moore <redacted> --- arch/arm/kernel/signal.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 7be9188d83d9..1d015b696a76 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c@@ -140,7 +140,9 @@ static int restore_vfp_context(char __user **auxp) static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf) { struct sigcontext context; +#if defined(CONFIG_IWMMXT) || defined(CONFIG_VFP) char __user *aux; +#endif sigset_t set; int err;
@@ -171,6 +173,7 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf) err |= !valid_user_regs(regs); +#if defined(CONFIG_IWMMXT) || defined(CONFIG_VFP) aux = (char __user *) sf->uc.uc_regspace; #ifdef CONFIG_IWMMXT if (err == 0)
@@ -180,6 +183,7 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf) if (err == 0) err |= restore_vfp_context(&aux); #endif +#endif /* defined(CONFIG_IWMMXT) || defined(CONFIG_VFP) */ return err; }
--
2.43.0