Re: DMA breakage in 2.6.29-rc*

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Fri, 2009-01-30 at 13:17 +0100, Mikael Pettersson wrote:
> Benjamin Herrenschmidt writes:
>  > Hi Bart !
>  > 
>  > On a bunch of pmac's, I'm getting lost interrupts when trying to do DMA
>  > with ide hard disks (first time at boot when reading the partition
>  > table). It then times out, reverts to PIO and boots fine.
>  > 
>  > Haven't had time to fully bisect yet, but it seem to be somewhere in the
>  > pile of IDE patches (surprise :-) that went in around that time.
> 
> On a slightly related note, any update on the pata_macio driver
> you posted last summer? As I recall, it worked ok on my G4, except
> for some OF/yaboot mismatch which broke ydl's /sbin/installkernel.

I needs more work and I didn't get a chance to do that yet.. It will
need yaboot's ofboot script to be updated too, unfortunately, as it hard
codes things specific to ide-pmac.

Cheers,
Ben.