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[PATCH] fs_enet: Fix dma_unmap_single calls 

The following patches fixes a bug with erroneous calling of
dma_unmap_single. It never triggered because on normal ppc32
the calls is a NOP. Out of tree drivers need this fix however.

Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Pantelis Antoniou 2005-10-30 01:22:40 +03:00 committed by Jeff Garzik
parent 4689a6b1d4
commit 34e30d612f
1 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/fs_enet/fs_enet-main.c
View File

@ -130,7 +130,7 @@ static int fs_enet_rx_napi(struct net_device *dev, int *budget)
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, skb->data,
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
@ -144,7 +144,7 @@ static int fs_enet_rx_napi(struct net_device *dev, int *budget)
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, skb->data,
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
@ -268,7 +268,7 @@ static int fs_enet_rx_non_napi(struct net_device *dev)
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, skb->data,
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
@ -278,7 +278,7 @@ static int fs_enet_rx_non_napi(struct net_device *dev)
skb = fep->rx_skbuff[curidx];
dma_unmap_single(fep->dev, skb->data,
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);
@ -399,7 +399,8 @@ static void fs_enet_tx(struct net_device *dev)
fep->stats.collisions++;
/* unmap */
dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
skb->len, DMA_TO_DEVICE);
/*
* Free the sk buffer associated with this last transmit.
@ -547,17 +548,19 @@ void fs_cleanup_bds(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
struct sk_buff *skb;
cbd_t *bdp;
int i;
/*
* Reset SKB transmit buffers.
*/
for (i = 0; i < fep->tx_ring; i++) {
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
if ((skb = fep->tx_skbuff[i]) == NULL)
continue;
/* unmap */
dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
skb->len, DMA_TO_DEVICE);
fep->tx_skbuff[i] = NULL;
dev_kfree_skb(skb);
@ -566,12 +569,12 @@ void fs_cleanup_bds(struct net_device *dev)
/*
* Reset SKB receive buffers
*/
for (i = 0; i < fep->rx_ring; i++) {
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
if ((skb = fep->rx_skbuff[i]) == NULL)
continue;
/* unmap */
dma_unmap_single(fep->dev, skb->data,
dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE);