atm: idt77105: Use del_timer_sync() in exit path

The module is about to go away. Make sure everything is stopped safely
before we pull the plug.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chas Williams <chas@cmf.nrl.navy.mil>
Cc: atm <linux-atm-general@lists.sourceforge.net>
Cc: netdev <netdev@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/atm/idt77105.c

@@ -369,8 +369,8 @@ EXPORT_SYMBOL(idt77105_init);
 static void __exit idt77105_exit(void)
 {
 	/* turn off timers */
-        del_timer(&stats_timer);
-        del_timer(&restart_timer);
+	del_timer_sync(&stats_timer);
+	del_timer_sync(&restart_timer);
 }
 
 module_exit(idt77105_exit);