Hi Andy, On Fri, 1 Oct 2021 at 06:04, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote: > > Doesn't this mean the ACPI table ends up in kernels that will never use ACPI? > > Yes. Is it a problem (*)? If so, you need to use ifdeffery, since __maybe_unused is > not for the ID tables. Ok, is there a reason it's not for the ID tables? Does it break something? > *) while justifying this you also need to show why it's a problem specific > to the ACPI IDs and not a problem for OF ones, which we have tons of in the > Linux kernel without any guards (ifdeffery). To be honest I don't care about this too much. I just wanted to cut down some of the noise when I build my patch backlog so that warnings in the stuff I'm trying to mainline are more visible. For what it's worth I think the OF ids are a bit wasteful. For some drivers where there are tons of broken variations they add a few K of unneeded data. But since everyone now has gigabytes of memory I doubt they care... I'm working with 64MB. :) Cheers, Daniel