diff options
| author | Dave Jones <davej@redhat.com> | 2009-03-13 13:37:46 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-13 13:37:46 -0700 |
| commit | 59f8e169e25c5fce91826412c38359ecaf940b82 (patch) | |
| tree | 7c61347ad22e84ee3c1d3c9c42f8e99afb6e9ca5 | |
| parent | 855b0993f216a9b0f9cb33573bd05e314105d86c (diff) | |
| download | linux-59f8e169e25c5fce91826412c38359ecaf940b82.tar.bz2 | |
via-velocity: Fix DMA mapping length errors on transmit.
From: Dave Jones <davej@redhat.com>
The dma-debug changes caught that this driver uses the
wrong DMA mapping length when skb_padto() does something.
With suggestions from Eric Dumazet.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/via-velocity.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c index c5691fdb7079..fb53ef872df3 100644 --- a/drivers/net/via-velocity.c +++ b/drivers/net/via-velocity.c @@ -1838,17 +1838,19 @@ static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_ { struct sk_buff *skb = tdinfo->skb; int i; + int pktlen; /* * Don't unmap the pre-allocated tx_bufs */ if (tdinfo->skb_dma) { + pktlen = (skb->len > ETH_ZLEN ? : ETH_ZLEN); for (i = 0; i < tdinfo->nskb_dma; i++) { #ifdef VELOCITY_ZERO_COPY_SUPPORT pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], le16_to_cpu(td->tdesc1.len), PCI_DMA_TODEVICE); #else - pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], skb->len, PCI_DMA_TODEVICE); + pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], pktlen, PCI_DMA_TODEVICE); #endif tdinfo->skb_dma[i] = 0; } @@ -2080,17 +2082,14 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev) struct tx_desc *td_ptr; struct velocity_td_info *tdinfo; unsigned long flags; - int pktlen = skb->len; + int pktlen; __le16 len; int index; - - if (skb->len < ETH_ZLEN) { - if (skb_padto(skb, ETH_ZLEN)) - goto out; - pktlen = ETH_ZLEN; - } + if (skb_padto(skb, ETH_ZLEN)) + goto out; + pktlen = max_t(unsigned int, skb->len, ETH_ZLEN); len = cpu_to_le16(pktlen); |