Subject: Re: Problem with OF interrupt parsing code

From: Scott Wood <[email-masked]>
Date: Mon, 01 Oct 2007 16:48:01 -0500

Benjamin Herrenschmidt wrote:
> On Mon, 2007-10-01 at 16:37 -0500, Scott Wood wrote:
>> Scott Wood wrote:
>> Actually, it doesn't -- it should stop when it sees the 
>> interrupt-controller property in the i8259 node, at which point it'll be 
>> trying to use the raw PCI IRQ pin number as an i8259 IRQ.  This is 
>> Unlikely To Work(tm).
> 
> It will work in the specific 8259 case I suppose since it gets the
> legacy 1:1 mapping... but it sucks :-)

The mapping between INTA-D and i8259 numbers isn't generally 1:1, and it 
looked as if it'd try using the former... though the code is 
sufficiently complicated that I could easily be missing something.

-Scott