Re: [RFC][PATCH 2/2] PM: Rework handling of interrupts during suspend-resume

[Linus Torvalds]

On Thu, 26 Feb 2009, Arve Hjønnevåg wrote:
> 
> How many sysdevs use interrupts?
> 
> I found may drivers in the mainline kernel that use enable_irq_wake,
> but I did not see any that handle this race condition.

The _only_ driver that does enable_irq_wake() on x86 is the cmos timer 
driver, and even there it actually doesn't use irq_wake, but ACPI. Why? 
Because I don't think irq wakeup even _works_ on x86.

So the whole enable_irq_wake is largely some embedded ARM platform issue, 
and a very special case, and doesn't exist anywhere else.

Maybe I'm missing something, but it's definitely not the normal case.

		Linus
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