Re: serverworks CSB5 IDE: DMA disabled on secondary channel

Alan Cox
2008-07-19T09:19:18Z

On Sat, 19 Jul 2008 04:45:59 +0200
Frantisek Hanzlik <franta@hanzlici.cz> wrote:

> Alan Cox wrote:
> >>> 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.
> >
> Before I post to lkml I tried disable ata_generic driver, (which was loaded
> before pata_serverworks too

Thanks - please complain to your distribution vendor if they are not
following the docs and loading pata_acpi then ata_generic then ata_legacy
*AFTER* other drivers.