From c726b822131e7fdb62745a5585449e6a159395e8 Mon Sep 17 00:00:00 2001
From: David Daney <ddaney@caviumnetworks.com>
Date: Mon, 24 Jan 2011 14:51:34 -0800
Subject: [PATCH] MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c
GCC-4.6 can find more unused code than previous versions could.
In the case of protected_restore_fp_context{,32}, the variable tmp is
really used. Its use is tricky in that we really care about the side
effects of the __put_user() calls. So we must mark tmp with
__maybe_unused to quiet the warning.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2035/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/kernel/signal.c | 2 +-
arch/mips/kernel/signal32.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 5922342bca39..dbbe0ce48d89 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -84,7 +84,7 @@ static int protected_save_fp_context(struct sigcontext __user *sc)
static int protected_restore_fp_context(struct sigcontext __user *sc)
{
- int err, tmp;
+ int err, tmp __maybe_unused;
while (1) {
lock_fpu_owner();
own_fpu_inatomic(0);
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index a0ed0e052b2e..aae986613795 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -115,7 +115,7 @@ static int protected_save_fp_context32(struct sigcontext32 __user *sc)
static int protected_restore_fp_context32(struct sigcontext32 __user *sc)
{
- int err, tmp;
+ int err, tmp __maybe_unused;
while (1) {
lock_fpu_owner();
own_fpu_inatomic(0);
--
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