[netdrvr] dm9000: use delayed work to update mii phy state fix

use cancel_delayed_work_sync()

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/net/dm9000.c

@@ -903,7 +903,7 @@ dm9000_stop(struct net_device *ndev)
 	if (netif_msg_ifdown(db))
 		dev_dbg(db->dev, "shutting down %s\n", ndev->name);
 
-	cancel_delayed_work(&db->phy_poll);
+	cancel_delayed_work_sync(&db->phy_poll);
 
 	netif_stop_queue(ndev);
 	netif_carrier_off(ndev);