[PATCH] hrtimers: namespace and enum cleanup

- hrtimers did not use the hrtimer_restart enum and relied on the implict
  int representation. Fix the prototypes and the functions using the enums.
- Use seperate name spaces for the enumerations
- Convert hrtimer_restart macro to inline function
- Add comments

No functional changes.

[akpm@osdl.org: fix input driver]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/itimer.c b/kernel/itimer.c
index 204ed79..9cefe1d 100644
--- a/kernel/itimer.c
+++ b/kernel/itimer.c
@@ -128,7 +128,7 @@
 /*
  * The timer is automagically restarted, when interval != 0
  */
-int it_real_fn(struct hrtimer *timer)
+enum hrtimer_restart it_real_fn(struct hrtimer *timer)
 {
 	struct signal_struct *sig =
 	    container_of(timer, struct signal_struct, real_timer);
@@ -235,7 +235,7 @@
 			timeval_to_ktime(value->it_interval);
 		expires = timeval_to_ktime(value->it_value);
 		if (expires.tv64 != 0)
-			hrtimer_start(timer, expires, HRTIMER_REL);
+			hrtimer_start(timer, expires, HRTIMER_MODE_REL);
 		spin_unlock_irq(&tsk->sighand->siglock);
 		break;
 	case ITIMER_VIRTUAL: