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SubjectRe: Linux 4.15-rc2: Regression in resume from ACPI S3
On Thu, 14 Dec 2017, Linus Torvalds wrote:

> On Thu, Dec 14, 2017 at 2:36 PM, Thomas Gleixner <tglx@linutronix.de> wrote:
> >
> > But, because the silly firmware comes out of suspend with all PIC lines
> > unmasked for whatever reason, the PIC can observe that IRQ being raised and
> > the CPU not handling it. So yes, I forgot about 7 being magic, but I still
> > think it's the firmware which causes it by unmasking the PIC irqs.
>
> Yes, that sounds quite likely.

And just for the record I was able to figure out which interrupt comes in
and goes away again. It's the only level triggered interrupt, which is the
ACPI interrupt.....

Thanks,

tglx

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