Re: Diagnosing ACPI trouble related to pinctr_cherryview on 4.4.x

[Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>]

On Mon, Mar 28, 2016 at 04:57:04PM -0400, Martin Langhoff wrote:
> Took a few days but managed to get my hands on the laptop again.
> 
> A kernel built with CONFIG_X86_INTEL_LPSS=n boots with noapic in the
> cmdline. Somehow during the build all the PINCTRL options in the
> kernel got switched off, perhaps they depend on X86_INTEL_LPSS?

That's correct.

> If I don't add noapic, we crash during boot.

Okay, so there is something wrong with either IO-APIC or the pinctrl on
this particular machine.

> I'm about to lose access to this laptop as I am traveling back home,
> leaving it with its new owner...

We will try to get one such machine here to debug the issue further.
Thanks.
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