Merge "sched/walt: Fix invalid access of CPU cycle counter callback"

int register_cpu_cycle_counter_cb(struct cpu_cycle_counter_cb *cb)

{

	unsigned long flags;

	mutex_lock(&cluster_lock);

	if (!cb->get_cpu_cycle_counter) {

		mutex_unlock(&cluster_lock);

		return -EINVAL;

	}

	acquire_rq_locks_irqsave(cpu_possible_mask, &flags);

	cpu_cycle_counter_cb = *cb;

	use_cycle_counter = true;

	release_rq_locks_irqrestore(cpu_possible_mask, &flags);

	mutex_unlock(&cluster_lock);

	cpufreq_unregister_notifier(&notifier_trans_block,