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SubjectRe: [linux-pm] [PATCH 1/3] PCI: Rework default handling of suspend and resume


On Sat, 6 Dec 2008, Arjan van de Ven wrote:
>
> the problem is that the system bios can have reassigned interrupts
> after resume, and afaik we need to re-evaluate the ACPI methods to
> get the new mapping.
> So we need to unregister + re-register to make that happen

Can you give actual examples of real life situations?

Because quite frankly, it sounds less and less likely for any relevant
hardware. It's a non-issue for MSI, for example. And it's a non-issue for
any sane interrupt source I can think of.

In other words, I've heard that claim before - and I just don't believe
it. I've never heard a realistic explanation of why it would happen for a
normal PCI driver. And I still claim that it's a very odd and special case
if it does.

And btw, I'm talking suspend, not hibernate.

Linus


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