cancel_delayed_work_sync(&priv->clear_recent_scan_work);
        atomic_set(&priv->scan.in_progress, 1);
        atomic_set(&priv->recent_scan, 1);
-       cw1200_pm_stay_awake(&priv->pm_state, tmo * HZ / 1000);
+       cw1200_pm_stay_awake(&priv->pm_state, msecs_to_jiffies(tmo));
        queue_delayed_work(priv->workqueue, &priv->scan.timeout,
-                          tmo * HZ / 1000);
+                          msecs_to_jiffies(tmo));
        ret = wsm_scan(priv, scan);
        if (ret) {
                atomic_set(&priv->scan.in_progress, 0);
        if (down_trylock(&priv->scan.lock)) {
                /* Scan is already in progress. Requeue self. */
                schedule();
-               queue_delayed_work(priv->workqueue,
-                                  &priv->scan.probe_work, HZ / 10);
+               queue_delayed_work(priv->workqueue, &priv->scan.probe_work,
+                                  msecs_to_jiffies(100));
                mutex_unlock(&priv->conf_mutex);
                return;
        }