powerpc: "IRQ probe failed (0x0)" on powerbook

[Benjamin Herrenschmidt]

On Sun, 2006-12-10 at 19:45 +1300, Paul Collins wrote:
> On my PowerBook when booting Linus's tree as of commit af1713e0 I get
> something like this:
> 
>   [blah blah]
>   ide0: Found Apple UniNorth ATA-6 controller, bus ID 3, irq 0
>   Probing IDE interface ide0...
>   hda: HTS541080G9AT00, ATA DISK drive
>   IRQ probe failed (0x0)
>   IRQ probe failed (0x0)
>   IRQ probe failed (0x0)
>   IRQ probe failed (0x0)
> 
> And then of course it fails to mount root.  No such problem using a
> kernel built from commit 97be852f of December 2nd.

I'll investigate tomorrow, looks like irq assignment got broken in a way
or another for that IDE controller.

Ben.