Re: [PATCH V6 09/11] ACPI: introduce flag .is_master_device

[Zhang Rui]

On ä, 2014-05-21 at 13:10 +0200, Rafael J. Wysocki wrote:
> On Wednesday, May 21, 2014 11:52:07 AM Mika Westerberg wrote:
> > On Thu, May 15, 2014 at 02:44:14PM +0800, Zhang Rui wrote:
> > > For some ACPI device objects, they represent master devices,
> > > and their children devices are enumerated by bus controller drivers
> > > for the buses they are on.
> > > 
> > > In this case, we do not want to enumerate their children devices to
> > > platform bus explicitly in acpi scan code.
> > > 
> > > Thus a new flag .is_master_device is introduced in this patch.
> > > 
> > > For devices with this flag set, we will not do default enumeration
> > > for their children.
> > 
> > Is there any particular reason we would like to enumerate everything
> > below the first device by default?
> 
> Yes, there is.  Device objects without _ADR under the PCI host bridge.
> 
I'm confused. Mika, what do you mean by saying "first device"?

thanks,
rui
> Or we can skip the children under every *platform* device created by this by
> default and mark the ones where we want the children to be enumerated as
> platform devices too in a special way if needed.
> 
> I guess we could try that (that was the Rui's original idea IIRC).
> 
> Rafael
> 


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