Re: [Pcihpd-discuss] Re: [patch 0/4] Hot Dock/Undock support

[Kristen Accardi <kristen.c.accardi@intel.com>]

On Wed, 2006-01-18 at 14:51 +0000, Pavel Machek wrote:
> Hi!
> 
> > > > Hope this helps.
> > > >                                               Pavel
> > >
> > >
> > > so the problem that I see is that this dsdt defines two separate dock
> > > devices, one outside the scope of pci, and one within it.  The one
> > > outside the scope of pci defines the _EJ0 and _DCK methods.  So, when
> > > acpiphp loads, it scans the pci slots for ejectable slots, finds none
> > > (because _EJ0 is defined in the dock device that is outside the scope of
> > > pci) and exits.  This dsdt is different from the others I've used in
> > > that most of them define all methods related to docking under the actual
> > > dock bridge (within the scope of pci).  perhaps some acpi people can
> > > shed some light on the best way to handle this - otherwise I'm sure I
> > > can hack something up that will be less than acceptable :).
> > >
> > 
> > ACPI has (had?) a braindamage - it drops devices that do not present
> > when initially scanning ACPI namespace. So if you boot undocked - too
> > bad. Driver won't ever see your docking station.
> 
> I think I booted docked....
> 

Yeah, that's not the problem here.  The problem is that I assumed that
all _DCK methods would be defined under the actual pci dock bridge
device.  It seems that was a bad assumption.  I am redoing this patch so
as to not assume that anymore.  I'll repost it as soon as I'm done with
a little bit of testing.