Merge "timers: Plug locking race vs. timer migration"

	__acquires(timer->base->lock)

{

	for (;;) {

		u32 tf = timer->flags;

		struct tvec_base *base;

		u32 tf;

		/*

		 * We need to use READ_ONCE() here, otherwise the compiler

		 * might re-read @tf between the check for TIMER_MIGRATING

		 * and spin_lock().

		 */

		tf = READ_ONCE(timer->flags);

		if (!(tf & TIMER_MIGRATING)) {

			base = get_timer_base(tf);