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

[Rafael J. Wysocki]

On 5/21/2014 1:04 PM, Mika Westerberg wrote:
> On Wed, May 21, 2014 at 01:10:33PM +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.
> OK.
>
> > 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).
> That sounds better to me.
>
> I wonder if we can do this analogous to of_platform_bus_probe() and
> friends?

Yes, we should actually.

Rafael

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