Libertas: fix issues while configuring host sleep using ethtool wol

Configuration of wake-on-lan for unicast, multicast, broadcast, physical
activity was not working. Kernel panic issue was there when user tries to
disable WOL. Fixed them.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/ethtool.c

@@ -169,9 +169,6 @@ static int lbs_ethtool_set_wol(struct net_device *dev,
 	struct lbs_private *priv = dev->ml_priv;
 	uint32_t criteria = 0;
 
-	if (priv->wol_criteria == 0xffffffff && wol->wolopts)
-		return -EOPNOTSUPP;
-
 	if (wol->wolopts & ~(WAKE_UCAST|WAKE_MCAST|WAKE_BCAST|WAKE_PHY))
 		return -EOPNOTSUPP;
 
@@ -183,6 +180,8 @@ static int lbs_ethtool_set_wol(struct net_device *dev,
 		criteria |= EHS_WAKE_ON_BROADCAST_DATA;
 	if (wol->wolopts & WAKE_PHY)
 		criteria |= EHS_WAKE_ON_MAC_EVENT;
+	if (wol->wolopts == 0)
+		criteria |= EHS_REMOVE_WAKEUP;
 
 	return lbs_host_sleep_cfg(priv, criteria, (struct wol_config *)NULL);
 }