ipw2100: interface-up carrier state fix

From: Imre Deak <imre.deak@nokia.com>

I had a problem where doing an open after a close left the device
unusable. netif_carrier_on should be called whenever we go to the
associated state, but this is not so in case of a close->open sequence.
Signed-off-by: NJiri Benc <jbenc@suse.cz>

drivers/net/wireless/ipw2100.c

@@ -5685,8 +5685,10 @@ static int ipw2100_open(struct net_device *dev)
 	IPW_DEBUG_INFO("dev->open\n");
 
 	spin_lock_irqsave(&priv->low_lock, flags);
-	if (priv->status & STATUS_ASSOCIATED)
+	if (priv->status & STATUS_ASSOCIATED) {
+		netif_carrier_on(dev);
 		netif_start_queue(dev);
+	}
 	spin_unlock_irqrestore(&priv->low_lock, flags);
 
 	return 0;