diff options
| author | Luca Tettamanti <kronos.it@gmail.com> | 2007-09-07 20:25:01 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-09-12 23:54:50 -0400 |
| commit | 5f08e46b621a769e52a9545a23ab1d5fb2aec1d4 (patch) | |
| tree | f5d841a9670c2a94b7ee9543112a5aa2cc1414a2 | |
| parent | c87ce65868bbf9bbea9c3f112ff8315302daf8f2 (diff) | |
atl1: disable broken 64-bit DMA
64-bit DMA causes data corruption with atl1. We don't know why, and Atheros
is working on it. For now, just use 32-bit DMA. This is a big hack that is
probably wrong, but it stops the bleeding.
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Acked-by: Chris Snook <csnook@redhat.com>
Acked-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/atl1/atl1_main.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c index 3c1984ecf36..f23e13c8f9a 100644 --- a/drivers/net/atl1/atl1_main.c +++ b/drivers/net/atl1/atl1_main.c @@ -2203,21 +2203,20 @@ static int __devinit atl1_probe(struct pci_dev *pdev, struct net_device *netdev; struct atl1_adapter *adapter; static int cards_found = 0; - bool pci_using_64 = true; int err; err = pci_enable_device(pdev); if (err) return err; - err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); + /* + * 64-bit DMA currently has data corruption problems, so let's just + * use 32-bit DMA for now. This is a big hack that is probably wrong. + */ + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (err) { - err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); - if (err) { - dev_err(&pdev->dev, "no usable DMA configuration\n"); - goto err_dma; - } - pci_using_64 = false; + dev_err(&pdev->dev, "no usable DMA configuration\n"); + goto err_dma; } /* Mark all PCI regions associated with PCI device * pdev as being reserved by owner atl1_driver_name @@ -2282,7 +2281,6 @@ static int __devinit atl1_probe(struct pci_dev *pdev, netdev->ethtool_ops = &atl1_ethtool_ops; adapter->bd_number = cards_found; - adapter->pci_using_64 = pci_using_64; /* setup the private structure */ err = atl1_sw_init(adapter); @@ -2299,9 +2297,6 @@ static int __devinit atl1_probe(struct pci_dev *pdev, */ /* netdev->features |= NETIF_F_TSO; */ - if (pci_using_64) - netdev->features |= NETIF_F_HIGHDMA; - netdev->features |= NETIF_F_LLTX; /* |