[PATCH] s390: add dummy pm_power_off

Define a dummy pm_power_off pointer to make sys_reboot happy.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c083251..de87842 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -315,6 +315,11 @@
 	_machine_power_off();
 }
 
+/*
+ * Dummy power off function.
+ */
+void (*pm_power_off)(void) = machine_power_off;
+
 static void __init
 add_memory_hole(unsigned long start, unsigned long end)
 {