[PATCH] libertas: single out mesh code

This patches adds the two functions wlan_add_mesh() and wlan_remove_mesh(),
which are responsible for the mshX interface. In a CF driver with a non-
mesh-aware firmware you can omit the calls to this functions.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index 9509b8e..c8fce7b 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -220,7 +220,9 @@
 	}
 
 	memcpy(priv->wlan_dev.netdev->dev_addr, adapter->current_addr, ETH_ALEN);
-	memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
+	if (priv->mesh_dev)
+		memcpy(priv->mesh_dev->dev_addr, adapter->current_addr,
+		       ETH_ALEN);
 
 	if (libertas_set_regiontable(priv, adapter->regioncode, 0)) {
 		ret = -1;