Re: serverworks CSB5 IDE: DMA disabled on secondary channel

[Alan Cox]

> > ata2.01: ATAPI: CD-W540E, 1.0D, max UDMA/33
> > ata2.00: simplex DMA is claimed by other device, disabling DMA
> > ata2.01: simplex DMA is claimed by other device, disabling DMA
> > ata2.00: configured for PIO4
> > ata2.01: configured for PIO4


Disable the pata_acpi driver and let me know if it then behaves. We had a
similar problem with the ATI hardware which lost and messed up its
internal state if pata_acpi was loaded first.

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