timekeeping: access rtc outside of xtime lock

Lockdep complains about the access of rtc in timekeeping_suspend
inside the interrupt disabled region of the write locked xtime lock.
Move the access outside.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <johnstul@us.ibm.com>

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index acc417b..f682091 100644 (file)
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -325,9 +325,10 @@ static int timekeeping_suspend(struct sys_device *dev, pm_message_t state)
 {
        unsigned long flags;
 
+       timekeeping_suspend_time = read_persistent_clock();
+
        write_seqlock_irqsave(&xtime_lock, flags);
        timekeeping_suspended = 1;
-       timekeeping_suspend_time = read_persistent_clock();
        write_sequnlock_irqrestore(&xtime_lock, flags);
 
        clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);