orinoco: fix unsafe locking in spectrum_cs_suspend

A similar problem was highlighted in the orinoco_cs driver by lockdep.
This patch fixes the spectrum_cs driver.

Signed-off-by: David Kilroy <[e-mail]>
Signed-off-by: John W. Linville <[e-mail]>

drivers/net/wireless/spectrum_cs.c

···
 {
 	struct net_device *dev = link->priv;
 	struct orinoco_private *priv = netdev_priv(dev);
+	unsigned long flags;
 	int err = 0;
 
 	/* Mark the device as stopped, to block IO until later */
-	spin_lock(&priv->lock);
+	spin_lock_irqsave(&priv->lock, flags);
 
 	err = __orinoco_down(dev);
 	if (err)
···
 	netif_device_detach(dev);
 	priv->hw_unavailable++;
 
-	spin_unlock(&priv->lock);
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 	return err;
 }