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SubjectRe: PATA failure with piix, works with libata
On Sun, Mar 05, 2006 at 06:40:58PM -0500, Jeff Garzik wrote:
> Matthew Garrett wrote:
> >Ok, it /seems/ that things are happier (though still not entirely happy)
> >if I explicitly acknowledge the interrupt by writing the dma status
> >register back again. This doesn't seem to be done anywhere in the IDE
> >interrupt routine, but is in the libata one. I'm afraid I don't
> >understand IDE well enough to have any idea what's going on here - is it
> >possible that a piix in native mode (rather than legacy mode) and
> >sharing an interrupt needs some special handling?
> ICH definitely needs that irq ack...

Yeah, this is an ICH7. I can't find anything in drivers/ide that would
result in it being done, which is why I'm kind of confused. ide_ack_intr
seems to be defined to do nothing on x86 since IDE_ARCH_ACK_INTR isn't
defined there?

Matthew Garrett |
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