On Thu, 25 Oct 2007 20:42:16 -0400
Jeff Garzik <[email protected]> wrote:
> Alan Cox wrote:
> > On Fri, 26 Oct 2007 01:36:37 +0200
> > Bartlomiej Zolnierkiewicz <[email protected]> wrote:
> >
> >> Need to check if the host is a PCI one before reading IDE_ALTSTATUS_REG.
> >>
> >> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
> >
> > Umm why ? The altstatus register goes back to ST-506 and the original IBM
> > XT hard disk controller card ?
>
> I'm pretty sure there are at least a few controllers out there where the
> AltStatus/Control register block is simply non-existent.
One or two of the commode Amiga controllers did this. Makes error
recovery rather interesting. The register itself is however present even
on things like the WD10xx devices.
Alan
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