diff options
| -rw-r--r-- | drivers/staging/slicoss/slicoss.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c index aefe3fef7728..09a9d759c612 100644 --- a/drivers/staging/slicoss/slicoss.c +++ b/drivers/staging/slicoss/slicoss.c @@ -366,6 +366,7 @@ static int __devinit slic_entry_probe(struct pci_dev *pcidev, ulong mmio_start = 0; ulong mmio_len = 0; struct sliccard *card = NULL; + int pci_using_dac = 0; slic_global.dynamic_intagg = dynamic_intagg; @@ -379,16 +380,26 @@ static int __devinit slic_entry_probe(struct pci_dev *pcidev, printk(KERN_DEBUG "%s\n", slic_proc_version); } - err = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64)); - if (err) { - err = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32)); - if (err) + if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) { + pci_using_dac = 1; + if (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64))) { + dev_err(&pcidev->dev, "unable to obtain 64-bit DMA for " + "consistent allocations\n"); goto err_out_disable_pci; + } + } else if (pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) { + pci_using_dac = 0; + pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32)); + } else { + dev_err(&pcidev->dev, "no usable DMA configuration\n"); + goto err_out_disable_pci; } err = pci_request_regions(pcidev, DRV_NAME); - if (err) + if (err) { + dev_err(&pcidev->dev, "can't obtain PCI resources\n"); goto err_out_disable_pci; + } pci_set_master(pcidev); @@ -404,6 +415,8 @@ static int __devinit slic_entry_probe(struct pci_dev *pcidev, adapter = netdev_priv(netdev); adapter->netdev = netdev; adapter->pcidev = pcidev; + if (pci_using_dac) + netdev->features |= NETIF_F_HIGHDMA; mmio_start = pci_resource_start(pcidev, 0); mmio_len = pci_resource_len(pcidev, 0); |