net: fix network drivers ndo_start_xmit() return values (part 3)

net: fix network drivers ndo_start_xmit() return values (part 3)

Fix up wireless drivers that return an errno value to qdisc_restart(), causing
qdisc_restart() to print a warning an requeue/retransmit the skb.

- airo: transmission not implemented for chip, intention is to free and abort
- ipw2200: transmission not implemented for promiscous mode, intention is to
           drop
- prism54: intention is to drop
- wl3501_cs: intention appears to be to drop
- zd1201: error counter indicates intention is to drop

All drivers compile tested.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c
index c3b3dfe..44c29b3 100644
--- a/drivers/net/wireless/ipw2x00/ipw2200.c
+++ b/drivers/net/wireless/ipw2x00/ipw2200.c
@@ -11524,7 +11524,8 @@
 static int ipw_prom_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	IPW_DEBUG_INFO("prom dev->xmit\n");
-	return -EOPNOTSUPP;
+	dev_kfree_skb(skb);
+	return NETDEV_TX_OK;
 }
 
 static const struct net_device_ops ipw_prom_netdev_ops = {