Re: Linux 4.15-rc2: Regression in resume from ACPI S3

[Linus Torvalds]

On Thu, Dec 14, 2017 at 2:36 PM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> 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.

            Linus