Re: Interrupts & total mess

[Ben Dooks <ben-linux@fluff.org>]

On Thu, Oct 21, 2004 at 04:07:58PM +1000, Benjamin Herrenschmidt wrote:
> Ok so my simple project of adding NO_IRQ definitions all over the place
> is turning into a nightmare for various reasons (the probe_irq_* stuff
> beeing one of them, as it currently prevents using -1, so I'm leaning
> toward defining NO_IRQ as beeing INT_MIN, nothing against that ?)
> 
> However, while trying to do that in a simple way, that is with a
>  #ifndef NO_IRQ
>  #define NO_IRQ		(INT_MIN)
>  #endif
> 
> Somewhere in some generic piece of include after we has some asm/* stuff
> included to let the arch a chance to override it, I figured that, first,
> there are a number of places where "irq" is defined as beeing unsigned
> long... So neither INT_MIN nor -1 are appropriate. Then I noticed while
> looking for the right files to add this stuff that we have, at least:
> 
> include/linux/interrupts.h
> include/linux/irq.h
> include/linux/hardirq.h
> include/asm-*/irq.h
> include/asm-*/hw_irq.h
> include/asm-*/hardirq.h

also see the drivers/base/platform.c for the definition of
platform_get_irq() which also should be considered for this
(see earlier posting about the return code).

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'