Re: [PATCH v3 2/3] ACPI / OSL: Allow PCI to be disabled

[Sinan Kaya]

On 12/11/2018 5:16 PM, Rafael J. Wysocki wrote:
> > AFAIK, ACPI spec says that AML code running on non-existing op-regions to be
> > discarded last time I checked.
> I guess you mean "disregarded"?

I have seen Linux complain about reads/writes to non-existing I2C opregions
before as a read/write failure for every single AML transaction. I was under the
impression that we didn't care.

> So the spec appears to expect the OS to silently ignore the failures
> in those cases, so why should an error be returned?

I can certainly return success for this case when CONFIG_PCI is not present.

> > I know Linux is noisy about these.