[PATCH] ARM: arch/arm/kernel/signal.c: resolve set-but-not-used warning

[Ethan Nelson-Moore]

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 <enelsonmoore at gmail.com>
---
 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