static int prev_card = 3;      /*      start servicing isi_card[0]     */
 static struct tty_driver *isicom_normal;
 
-static DECLARE_COMPLETION(isi_timerdone);
-static char re_schedule = 1;
-
 static void isicom_tx(unsigned long _data);
 static void isicom_start(struct tty_struct *tty);
 
        spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
        /*      schedule another tx for hopefully in about 10ms */
 sched_again:
-       if (!re_schedule) {
-               complete(&isi_timerdone);
-               return;
-       }
-
        mod_timer(&tx, jiffies + msecs_to_jiffies(10));
 }
 
 
 static void __exit isicom_exit(void)
 {
-       re_schedule = 0;
-
-       wait_for_completion_timeout(&isi_timerdone, HZ);
+       del_timer_sync(&tx);
 
        pci_unregister_driver(&isicom_driver);
        tty_unregister_driver(isicom_normal);