[PATCH] pm: clean up /sys/power/disk

Clean code up a bit, and only show suspend to disk as available when
it is configured in.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/power/main.c

@@ -143,11 +143,12 @@ static void suspend_finish(suspend_state_t state)
 
 
 
-static char * pm_states[] = {
+static char *pm_states[PM_SUSPEND_MAX] = {
 	[PM_SUSPEND_STANDBY]	= "standby",
 	[PM_SUSPEND_MEM]	= "mem",
+#ifdef CONFIG_SOFTWARE_SUSPEND
 	[PM_SUSPEND_DISK]	= "disk",
-	NULL,
+#endif
 };