From 00b9b0af5887fed54e899e3b7f5c2ccf5e739def Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 27 May 2010 10:32:08 -0700
Subject: [PATCH] Avoid warning when CPU hotplug isn't enabled
Commit e9fb7631ebcd ("cpu-hotplug: introduce cpu_notify(),
__cpu_notify(), cpu_notify_nofail()") also introduced this annoying
warning:
kernel/cpu.c:157: warning: 'cpu_notify_nofail' defined but not used
when CONFIG_HOTPLUG_CPU wasn't set.
So move that helper inside the #ifdef CONFIG_HOTPLUG_CPU region, and
simplify it while at it.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/cpu.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 63e8de13c948..3097382eb44a 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -154,16 +154,13 @@ static int cpu_notify(unsigned long val, void *v)
return __cpu_notify(val, v, -1, NULL);
}
+#ifdef CONFIG_HOTPLUG_CPU
+
static void cpu_notify_nofail(unsigned long val, void *v)
{
- int err;
-
- err = cpu_notify(val, v);
- BUG_ON(err);
+ BUG_ON(cpu_notify(val, v));
}
-#ifdef CONFIG_HOTPLUG_CPU
-
EXPORT_SYMBOL(register_cpu_notifier);
void __ref unregister_cpu_notifier(struct notifier_block *nb)
--
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