[PATCH net-next 34/40] net: fec: update dirty_tx even if no skb

[Troy Kisky]

If dirty_tx isn't updated, then dma_unmap_single
will be called twice.

Signed-off-by: Troy Kisky <troy.ki...@boundarydevices.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c 
b/drivers/net/ethernet/freescale/fec_main.c
index 512b1ad..8dea600 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1236,10 +1236,8 @@ static void fec_txq(struct net_device *ndev, struct 
fec_enet_private *fep,
                        dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
                                        bdp->cbd_datlen, DMA_TO_DEVICE);
                bdp->cbd_bufaddr = 0;
-               if (!skb) {
-                       bdp = fec_enet_get_nextdesc(bdp, &txq->bd);
-                       continue;
-               }
+               if (!skb)
+                       goto skb_done;
 
                /* Check for errors. */
                if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |
@@ -1278,7 +1276,7 @@ static void fec_txq(struct net_device *ndev, struct 
fec_enet_private *fep,
 
                /* Free the sk buffer associated with this last transmit */
                dev_kfree_skb_any(skb);
-
+skb_done:
                /* Make sure the update to bdp and tx_skbuff are performed
                 * before dirty_tx
                 */
-- 
2.5.0