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authorDavid Daney <ddaney@caviumnetworks.com>2011-01-24 22:51:34 (GMT)
committerRalf Baechle <ralf@linux-mips.org>2011-03-14 20:07:25 (GMT)
commitc726b822131e7fdb62745a5585449e6a159395e8 (patch)
treef71f25b0444db1a00eca9985f19956eb18fe2aa5
parenta18059ace1eee8c4755bcce22163d137425db607 (diff)
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>
-rw-r--r--arch/mips/kernel/signal.c2
-rw-r--r--arch/mips/kernel/signal32.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 5922342..dbbe0ce 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 a0ed0e0..aae9866 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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