clockevents: Use set/get state helper functions

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index 311e2e1..17f1444 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -377,7 +377,7 @@
 		 * Prevent that the clock events layer tries to call
 		 * the set mode function!
 		 */
-		dev->state = CLOCK_EVT_STATE_DETACHED;
+		clockevent_set_state(dev, CLOCK_EVT_STATE_DETACHED);
 		dev->mode = CLOCK_EVT_MODE_UNUSED;
 		clockevents_exchange_device(dev, NULL);
 		dev->event_handler = clockevents_handle_noop;