Re: First steps towards making NO_IRQ a generic concept

[Ingo Molnar <mingo@elte.hu>]

* Matthew Wilcox <matthew@wil.cx> wrote:

> [PATCH] Check the irq number is within bounds in the functions which 
> weren't already checking.

> +	if (irq >= NR_IRQS)
> +		return;

hm, why not start with the -1 value for PCI_NO_IRQ, instead of 0:

> +#define PCI_NO_IRQ             0

and be done with it.

also:

> - Move the definition of NO_IRQ from asm directories to 
>   <linux/hardirq.h>. Individual architectures can still override it if 
>   they want to, but all existing definitions were -1.

we shouldnt make it overridable just for the sake of it. If all arches 
were fine with -1, it should be the generic value and there's no 
override.

plus, shouldnt this go into -mm first, since it clearly affects some 
drivers? Why into Linus' tree immediately?

the patch series looks good to me otherwise.

	Ingo
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