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SubjectRe: Two regressions in 4.12-rc on Baytrail/T: #1 Pinctrol or WMI
On Wed, Jun 07, 2017 at 04:20:44PM +0100, Alan Cox wrote:
> ASUS T100TA, BIOS 3.07, machine version is the variant with the windows
> logo on the frame and no Energy Star logo.
>
> The first one is in the pin controller (or I guess WMI) which now spews
> the (non fatal)
>
> [ 22.491352] Potential Error: Setting GPIO with direct_irq_en to output

Yeah, this sounds like a bug in the BIOS. The direct_irq_en is set which
means that the GPIO is routed directly to the IO-APIC (and is expected
to be input) but the device in question (WMI?) probably has some ACPI
method that uses the GPIO via ACPI Operation Region as output.

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