From e2c2770096b686b4d2456173f53cb50e01aa635c Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Sat, 1 Jul 2006 04:36:30 -0700
Subject: [PATCH] [PATCH] hotcpu_notifier-fixes
Always use do {} while (0). Failing to do so can cause subtle compile
failures or bugs.
Cc: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
include/linux/cpu.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index a3caf6866bae5..44a11f1ccaf2d 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -87,9 +87,9 @@ int cpu_down(unsigned int cpu);
#define lock_cpu_hotplug() do { } while (0)
#define unlock_cpu_hotplug() do { } while (0)
#define lock_cpu_hotplug_interruptible() 0
-#define hotcpu_notifier(fn, pri)
-#define register_hotcpu_notifier(nb)
-#define unregister_hotcpu_notifier(nb)
+#define hotcpu_notifier(fn, pri) do { } while (0)
+#define register_hotcpu_notifier(nb) do { } while (0)
+#define unregister_hotcpu_notifier(nb) do { } while (0)
/* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */
static inline int cpu_is_offline(int cpu) { return 0; }
--
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