[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>
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@ -87,9 +87,9 @@ int cpu_down(unsigned int cpu);
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#define lock_cpu_hotplug() do { } while (0)
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#define unlock_cpu_hotplug() do { } while (0)
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#define lock_cpu_hotplug_interruptible() 0
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#define hotcpu_notifier(fn, pri)
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#define register_hotcpu_notifier(nb)
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#define unregister_hotcpu_notifier(nb)
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#define hotcpu_notifier(fn, pri) do { } while (0)
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#define register_hotcpu_notifier(nb) do { } while (0)
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#define unregister_hotcpu_notifier(nb) do { } while (0)
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/* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */
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static inline int cpu_is_offline(int cpu) { return 0; }
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