[PATCH] ppc64: generic hotplug cpu support fix

Fix a false-positive from the smp_processor_id() debugging code.  Idle threads
are per-cpu anwyay.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/idle.c

@@ -294,7 +294,7 @@ static int native_idle(void)
 		if (need_resched())
 			schedule();
 
-		if (cpu_is_offline(smp_processor_id()) &&
+		if (cpu_is_offline(_smp_processor_id()) &&
 		    system_state == SYSTEM_RUNNING)
 			cpu_die();
 	}