On Monday, 12 of May 2008, Pavel Machek wrote:
> Hi!
>
> > Index: linux-2.6/Documentation/kernel-parameters.txt
> > ===================================================================
> > --- linux-2.6.orig/Documentation/kernel-parameters.txt
> > +++ linux-2.6/Documentation/kernel-parameters.txt
> > @@ -157,6 +157,11 @@ and is between 256 and 4096 characters.
> > default: The hardware signature is checked during
> > resume from S4.
> >
> > + acpi_old_suspend_ordering [HW,ACPI] ACPI suspend ordering
> > + Enforce the ACPI 1.0 ordering of the _PTS control
> > + method wrt putting devices into low power states
> > + default: ACPI 2.0 ordering of _PTS
> > +
> > acpi_sci= [HW,ACPI] ACPI System Control Interrupt trigger mode
> > Format: { level | edge | high | low }
> >
>
> Hmm, I have a wild idea...
>
> acpi_sleep=old_ordering
>
> ...and reuse the same variable we already use for
> s3_bios/s3_mode. Then, we'd be able to blacklist the systems needing
> old_ordering from s2ram...
>
> I guess this whitelist should better be done in kernel, but short-term
> ability to whitelist from userland could not hurt...?
There's one problem with that, acpi_sleep is x86-specific and it's actually
handled in arch/x86/kernel/acpi/sleep.c . Well, ok, I think I can handle that,
but it won't look nice.
Thanks,
Rafael
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