diff options
| author | Andy Fleming <afleming@freescale.com> | 2008-11-12 17:07:11 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-11-15 00:18:30 +0100 |
| commit | 81183059e89c36f9b4c41f9332d642c2e0bff971 (patch) | |
| tree | 4004262f929bf732596bd83d77c43ffb8c9058d3 /drivers/net/gianfar.c | |
| parent | net/ucc_geth: Fix oops in uec_get_ethtool_stats() (diff) | |
| download | linux-81183059e89c36f9b4c41f9332d642c2e0bff971.tar.xz linux-81183059e89c36f9b4c41f9332d642c2e0bff971.zip | |
gianfar: Fix DMA unmap invocations
We weren't unmapping DMA memory, which will break when gianfar gets used
on systems with more than 32-bits of memory. Also, it's just plain wrong.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/gianfar.c')
| -rw-r--r-- | drivers/net/gianfar.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index 83a5cb6aa23b..c4af949bf860 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1407,6 +1407,10 @@ static int gfar_clean_tx_ring(struct net_device *dev) if (bdp->status & TXBD_DEF) dev->stats.collisions++; + /* Unmap the DMA memory */ + dma_unmap_single(&priv->dev->dev, bdp->bufPtr, + bdp->length, DMA_TO_DEVICE); + /* Free the sk buffer associated with this TxBD */ dev_kfree_skb_irq(priv->tx_skbuff[priv->skb_dirtytx]); @@ -1666,6 +1670,9 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) skb = priv->rx_skbuff[priv->skb_currx]; + dma_unmap_single(&priv->dev->dev, bdp->bufPtr, + priv->rx_buffer_size, DMA_FROM_DEVICE); + /* We drop the frame if we failed to allocate a new buffer */ if (unlikely(!newskb || !(bdp->status & RXBD_LAST) || bdp->status & RXBD_ERR)) { @@ -1674,14 +1681,8 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) if (unlikely(!newskb)) newskb = skb; - if (skb) { - dma_unmap_single(&priv->dev->dev, - bdp->bufPtr, - priv->rx_buffer_size, - DMA_FROM_DEVICE); - + if (skb) dev_kfree_skb_any(skb); - } } else { /* Increment the number of packets */ dev->stats.rx_packets++; |