On Sun, 18 Nov 2007 18:04:51 -0600
Larry Finger <[email protected]> wrote:
> I get a failure of 64-bit DMA on a BCM94311MCG rev 02 wireless
> interface running on x86_64 using an AMD Turion 64 X2 processor on an
> HP Pavilion dv2125nr laptop. The error code indicates that the
> interface is getting a descriptor read error, even though the
> descriptor ring and all the DMA buffers have been checked when
> allocated. This particular card version is newly supported; however,
> it was working correctly on 2.6.24-rc2.
>
worth adding a pci_set_dma_mask(pdev, DMA_32BIT_MASK); in the driver,
just after pci_enable_device(); (also check if there's other
pci_set_dma_mask functions, to make sure it doesn't get set back to 64
bit)
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