From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH] x86/apic: get rid of "warning: 'acpi_ioapic_lock' defined but not used"
Date: Fri, 21 Oct 2016 10:44:49 +0200 [thread overview]
Message-ID: <20161021084449.32523-1-bigeasy@linutronix.de> (raw)
kbuild test robot reported this against the -RT tree:
| In file included from include/linux/mutex.h:30:0,
| from include/linux/notifier.h:13,
| from include/linux/memory_hotplug.h:6,
| from include/linux/mmzone.h:777,
| from include/linux/gfp.h:5,
| from include/linux/slab.h:14,
| from include/linux/resource_ext.h:19,
| from include/linux/acpi.h:26,
| from arch/x86/kernel/acpi/boot.c:27:
|>> arch/x86/kernel/acpi/boot.c:90:21: warning: 'acpi_ioapic_lock' defined but not used [-Wunused-variable]
| static DEFINE_MUTEX(acpi_ioapic_lock);
| ^
| include/linux/mutex_rt.h:27:15: note: in definition of macro 'DEFINE_MUTEX'
| struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
^~~~~~~~~
which is also true (as in non-used) for !RT but the compiler does not
emit a warning.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/x86/kernel/acpi/boot.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index fbd19444403f..e78f477a4ae3 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -87,7 +87,9 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
* ->ioapic_mutex
* ->ioapic_lock
*/
+#ifdef CONFIG_X86_IO_APIC
static DEFINE_MUTEX(acpi_ioapic_lock);
+#endif
/* --------------------------------------------------------------------------
Boot-time Configuration
--
2.9.3
next reply other threads:[~2016-10-21 8:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-21 8:44 Sebastian Andrzej Siewior [this message]
2016-10-21 9:13 ` [tip:x86/apic] x86/apic: Get rid of "warning: 'acpi_ioapic_lock' defined but not used" tip-bot for Sebastian Andrzej Siewior
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