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[PATCH] skge: fix dma mask setup.
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There are a couple of problems in the DMA setup code for skge.
* In the 64 bit case, it doesn't set the consistent mask.
* In the 32 bit case, the error check is backwards!
It likely will only be visible as a bug on 64 bit platforms.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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Stephen Hemminger authored and Jeff Garzik committed Jan 18, 2006
1 parent 22d4d77 commit 77783a7
Showing 1 changed file with 15 additions and 5 deletions.
20 changes: 15 additions & 5 deletions drivers/net/skge.c
Original file line number Diff line number Diff line change
Expand Up @@ -3243,12 +3243,22 @@ static int __devinit skge_probe(struct pci_dev *pdev,

pci_set_master(pdev);

if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)))
if (sizeof(dma_addr_t) > sizeof(u32) &&
!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
using_dac = 1;
else if (!(err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
printk(KERN_ERR PFX "%s no usable DMA configuration\n",
pci_name(pdev));
goto err_out_free_regions;
err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
if (err < 0) {
printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
"for consistent allocations\n", pci_name(pdev));
goto err_out_free_regions;
}
} else {
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR PFX "%s no usable DMA configuration\n",
pci_name(pdev));
goto err_out_free_regions;
}
}

#ifdef __BIG_ENDIAN
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