net: fec_main: dma_map() only the length of the skb

[karo-tx-linux.git] / drivers / net / ethernet / freescale / fec_main.c

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 4cbebf3d80eb1492d847f1ad8a9888e2a6c17b97..73b000df8a08c7f3706b097a678fbf32d268f54c 100644 (file)
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -385,7 +385,7 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
         * data.
         */
        bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, bufaddr,
-                       FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
+                       skb->len, DMA_TO_DEVICE);
        if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) {
                bdp->cbd_bufaddr = 0;
                fep->tx_skbuff[index] = NULL;
@@ -779,11 +779,10 @@ fec_enet_tx(struct net_device *ndev)
                else
                        index = bdp - fep->tx_bd_base;
 
-               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr,
-                               FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE);
-               bdp->cbd_bufaddr = 0;
-
                skb = fep->tx_skbuff[index];
+               dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, skb->len,
+                               DMA_TO_DEVICE);
+               bdp->cbd_bufaddr = 0;
 
                /* Check for errors. */
                if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |