Re: [PATCH v3 09/12] of: property: Simplify of_link_to_phandle()

[Geert Uytterhoeven]

Hi Greg,

On Wed, Feb 8, 2023 at 8:33 AM Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, Feb 07, 2023 at 09:57:14PM +0100, Geert Uytterhoeven wrote:
> > On Tue, Feb 7, 2023 at 2:42 AM Saravana Kannan <saravanak@xxxxxxxxxx> wrote:
> > > The driver core now:
> > > - Has the parent device of a supplier pick up the consumers if the
> > >   supplier never has a device created for it.
> > > - Ignores a supplier if the supplier has no parent device and will never
> > >   be probed by a driver
> > >
> > > And already prevents creating a device link with the consumer as a
> > > supplier of a parent.
> > >
> > > So, we no longer need to find the "compatible" node of the supplier or
> > > do any other checks in of_link_to_phandle(). We simply need to make sure
> > > that the supplier is available in DT.
> > >
> > > Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
> >
> > Thanks for your patch!
> >
> > This patch introduces a regression when dynamically loading DT overlays.
> > Unfortunately this happens when using the out-of-tree OF configfs,
> > which is not supported upstream.  Still, there may be (obscure)
> > in-tree users.
>
> As we can't do anything about out-of-tree code, why does this matter?

Because the actual DT overlay mechanism is upstream.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds