Re: [PATCH v8 05/10] ACPI: property: Prepare generating swnodes for ACPI and DisCo for Imaging

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On Wed, May 17, 2023 at 2:22 PM Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote:
>
> On Wed, May 17, 2023 at 1:54 PM Sakari Ailus
> <sakari.ailus@xxxxxxxxxxxxxxx> wrote:

[cut]

> > > > +                       local_port = &local_swnodes->ports[local_index];
> > > > +                       local_node = &local_swnodes->nodes[ACPI_DEVICE_SWNODE_EP(local_index)];
> > > > +                       local_port->remote_ep_ref[0] = SOFTWARE_NODE_REFERENCE(local_node);
> > >
> > > This looks odd.  Is local_port pointing to its own node as a remote
> > > endpont, or am I confused?
> >
> > This is a reference to a software node that will be, in turn, referenced by
> > the "remote-endpoint" property entry in the remote node. Look for
> > ACPI_DEVICE_SWNODE_EP_REMOTE_EP a few lines below these.
>
> To be precise, IIUC, it is going to be the "remote-endpoint" value for
> the remote node.
>
> OK, thanks for the explanation.  This isn't exactly straightforward TBH.

So I'd arrange it so that the value of the "remote-endpoint" property
in a given node is stored in that node (the value itself being a
reference to another endpoint).



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