Re: better leve triggered IRQ management needed

[Arjan van de Ven]

On Mon, 2006-04-24 at 12:08 -0700, Linus Torvalds wrote:
> 
> On Mon, 24 Apr 2006, Linus Torvalds wrote:
> > 
> > You can get an edge by having your driver make sure that it clears the 
> > interrupt source at some point where it requires an edge.
> 
> Btw, this is why we do end up saying that having _two_ devices share 
> an edge-triggered setup really is something we cannot necessarily 
> fix. That said, it is better to limp along and work as well as you can 
> than to just throw up your hands.

we now have that neat polling thing Alan did for interrupts (but which
is optional). To limp along better the kernel could auto-enable that for
any such shared interrupt automatically as a "safe fallback"...
(or heck, if things are this broken, you probably want it for all
interrupts at that point just to be sure)

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