Re: [Re: Linux 2.6.28-rc1] ACPI Warning (nspredef-0852)[...]

[Robert Hancock]

Henrique de Moraes Holschuh wrote:
> On Sat, 25 Oct 2008, Rafael J. Wysocki wrote:
> > On Saturday, 25 of October 2008, Maciej Rutecki wrote:
> > > During suspend to ram I have this message:
> > >
> > > ACPI Warning (nspredef-0852): \_WAK: Return type mismatch - found
> > > Integer, expected Package [20080926]
> > >
> > > s2ram seems works OK
> > >
> > > dmesg, acpidump:
> > > http://unixy.pl/maciek/download/kernel/2.6.28-rc1_wak/
> > IMO it's yet another incarnation of
> > http://bugzilla.kernel.org/show_bug.cgi?id=11822
>
> If this is an outright violation of the ACPI spec, let me know (and if
> possible, please tell me the spec page).  This is the kind of thing I expect
> it would be a no-brainer to get Lenovo to fix with a BIOS update.

I don't think this is the same issue, but in both cases it looks like 
the BIOS AML code is wrong (just judging from the output, haven't looked 
at the dump yet). _WAK is supposed to return a package of 2 DWORD 
values, a bit field of conditions that occurred during sleep, and the 
effective S-state the system actually entered (section 7.3.7 of the ACPI 
3.0 spec). Presumably the BIOS is returning a single integer.
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