Re: [PATCH v2 4/6] ACPI: ARM: exclude DMI calls

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On Friday, November 22, 2013 10:53:09 AM Olof Johansson wrote:
> On Fri, Nov 22, 2013 at 10:03 AM, Al Stone <al.stone@xxxxxxxxxx> wrote:
> > On 11/22/2013 06:25 AM, Rob Herring wrote:
> >>
> >> On Thu, Nov 21, 2013 at 6:41 PM,  <al.stone@xxxxxxxxxx> wrote:
> >>>
> >>> From: Al Stone <al.stone@xxxxxxxxxx>
> >>>
> >>> Modified #ifdef so that DMI is not used on ARM platforms which
> >>> are currently implementing ACPI reduced HW mode.
> >>
> >>
> >> It is really not allowed or is optional? There are various people that
> >> want DMI tables on ARM.
> >>
> >> Rob
> >
> >
> > True.  DMI is optional.  I see it as orthogonal to
> > reduced HW mode; I have to hope that when DMI patches
> > are forthcoming they'll do the right thing here.
> >
> > Is there a better way to do this in the #if ?
> 
> 
> Doing all of these things at compile time seems odd, shouldn't it be
> handled at runtime? What happens when someone wants to build a kernel
> that boots both on the reduced hw mode platforms and regular ones?

I agree.

My suggestion would be to harden dmi_check_system() so that it works
if DMI is not present (if it doesn't already).

Thanks!

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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