[PATCH 3.16 104/328] mac802154: common tx error path

[Ben Hutchings]

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Varka Bhadram <varkab@xxxxxxx>

commit f55889128a776b51581394b20abd0b470304cf95 upstream.

This patch introduce the common error path on failure of Tx by
inserting the label 'err_tx'.

Signed-off-by: Varka Bhadram <varkab@xxxxxxx>
Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 net/mac802154/tx.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

--- a/net/mac802154/tx.c
+++ b/net/mac802154/tx.c
@@ -89,8 +89,7 @@ netdev_tx_t mac802154_tx(struct mac80215
 
 	if (!(priv->phy->channels_supported[page] & (1 << chan))) {
 		WARN_ON(1);
-		kfree_skb(skb);
-		return NETDEV_TX_OK;
+		goto err_tx;
 	}
 
 	mac802154_monitors_rx(mac802154_to_priv(&priv->hw), skb);
@@ -102,12 +101,10 @@ netdev_tx_t mac802154_tx(struct mac80215
 		data[1] = crc >> 8;
 	}
 
-	if (skb_cow_head(skb, priv->hw.extra_tx_headroom)) {
-		kfree_skb(skb);
-		return NETDEV_TX_OK;
-	}
+	if (skb_cow_head(skb, priv->hw.extra_tx_headroom))
+		goto err_tx;
 
-	work = kzalloc(sizeof(struct xmit_work), GFP_ATOMIC);
+	work = kzalloc(sizeof(*work), GFP_ATOMIC);
 	if (!work) {
 		kfree_skb(skb);
 		return NETDEV_TX_BUSY;
@@ -128,4 +125,8 @@ netdev_tx_t mac802154_tx(struct mac80215
 	queue_work(priv->dev_workqueue, &work->work);
 
 	return NETDEV_TX_OK;
+
+err_tx:
+	kfree_skb(skb);
+	return NETDEV_TX_OK;
 }