diff options
| author |   Matt Carlson <mcarlson@broadcom.com> | 2009-11-02 14:25:31 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-11-02 23:39:02 -0800 |
| commit | a21771dd189b340328c573da9e005068e8a74c53 (patch) | |
| tree | 84181a65a4e13edd6b14898e1747d8c84240c6c8 /drivers/net/tg3.c | |
| parent | tg3: Prevent a PCIe tx glitch (diff) | |
| download | linux-dev-a21771dd189b340328c573da9e005068e8a74c53.tar.xz linux-dev-a21771dd189b340328c573da9e005068e8a74c53.zip | |
tg3: Add more PCI DMA map error checking
This patch adds code to check the status of pci_map_single() before
allowing rx buffers to be used. It also converts the pci_map_single()
call in tg3_run_loopback() to use skb_dma_map() instead.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 53a193e0d45c..54dbe988f5f1 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -4426,6 +4426,10 @@ static int tg3_alloc_rx_skb(struct tg3_napi *tnapi, u32 opaque_key, mapping = pci_map_single(tp->pdev, skb->data, skb_size, PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(tp->pdev, mapping)) { + dev_kfree_skb(skb); + return -EIO; + } map->skb = skb; pci_unmap_addr_set(map, mapping, mapping); @@ -10369,7 +10373,10 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode) for (i = 14; i < tx_len; i++) tx_data[i] = (u8) (i & 0xff); - map = pci_map_single(tp->pdev, skb->data, tx_len, PCI_DMA_TODEVICE); + if (skb_dma_map(&tp->pdev->dev, skb, DMA_TO_DEVICE)) { + dev_kfree_skb(skb); + return -EIO; + } tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE | rnapi->coal_now); @@ -10380,7 +10387,8 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode) num_pkts = 0; - tg3_set_txd(tnapi, tnapi->tx_prod, map, tx_len, 0, 1); + tg3_set_txd(tnapi, tnapi->tx_prod, + skb_shinfo(skb)->dma_head, tx_len, 0, 1); tnapi->tx_prod++; num_pkts++; @@ -10404,7 +10412,7 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode) break; } - pci_unmap_single(tp->pdev, map, tx_len, PCI_DMA_TODEVICE); + skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE); dev_kfree_skb(skb); if (tx_idx != tnapi->tx_prod) |