From 52fe29e4bb614367c108b717c6d7fe5953eb7af3 Mon Sep 17 00:00:00 2001
From: Sarveshwar Bandi <sarveshwar.bandi@emulex.com>
Date: Tue, 16 Jul 2013 12:44:02 +0530
Subject: be2net: Fix to avoid hardware workaround when not needed

Hardware workaround requesting hardware to skip vlan insertion is necessary
only when umc or qnq is enabled. Enabling this workaround in other scenarios
could cause controller to stall.

Signed-off-by: Sarveshwar Bandi <sarveshwar.bandi@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 2df48bb..181edb5 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -782,16 +782,22 @@ static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
 
 	if (vlan_tx_tag_present(skb))
 		vlan_tag = be_get_tx_vlan_tag(adapter, skb);
-	else if (qnq_async_evt_rcvd(adapter) && adapter->pvid)
-		vlan_tag = adapter->pvid;
+
+	if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
+		if (!vlan_tag)
+			vlan_tag = adapter->pvid;
+		/* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
+		 * skip VLAN insertion
+		 */
+		if (skip_hw_vlan)
+			*skip_hw_vlan = true;
+	}
 
 	if (vlan_tag) {
 		skb = __vlan_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 		if (unlikely(!skb))
 			return skb;
 		skb->vlan_tci = 0;
-		if (skip_hw_vlan)
-			*skip_hw_vlan = true;
 	}
 
 	/* Insert the outer VLAN, if any */
-- 
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