Use setup_deferrable_timer() instead of init_timer_deferrable() to
simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
        INIT_LIST_HEAD(&pool->idle_list);
        hash_init(pool->busy_hash);
 
-       init_timer_deferrable(&pool->idle_timer);
-       pool->idle_timer.function = idle_worker_timeout;
-       pool->idle_timer.data = (unsigned long)pool;
+       setup_deferrable_timer(&pool->idle_timer, idle_worker_timeout,
+                              (unsigned long)pool);
 
        setup_timer(&pool->mayday_timer, pool_mayday_timeout,
                    (unsigned long)pool);