Re: [PATCH] pmdomain: fix early domain registration

[Johan Hovold <johan@kernel.org>]

On Wed, Jun 10, 2026 at 11:12:19AM +0200, Geert Uytterhoeven wrote:

> On Tue, 9 Jun 2026 at 18:07, Johan Hovold <johan@kernel.org> wrote:
> > A recent change switching to a dynamically allocated root device broke
> > platforms like rcar-sysc that registers PM domains before the PM domain
> > bus itself has been registered (cf. commit c5ae5a0c6112 ("pmdomain:
> > renesas: rcar-sysc: Add genpd OF provider at postcore_initcall")).
> >
> > Defer the assignment of the parent root device until the domain is
> > registered with driver core to avoid it being left unset.
> 
> Thanks for your patch!
> 
> > Fixes: a96e40f4afdc ("pmdomain: core: switch to dynamic root device")
> > Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
> > Link: https://lore.kernel.org/r/CAMuHMdUHabMGJyJ7e7yp7DLC+JJc9k6NK9p4anj2wRKNuwZUng@mail.gmail.com
> 
> s/Link/Closes/

I use use Link: on purpose (like Linus does).

> > Signed-off-by: Johan Hovold <johan@kernel.org>
> 
> This fixes the issue on R-Car H1, M2-W, H3 ES2.0, and on RZ/A1H.
> No regressions seen on SH-Mobile AG5, R-Mobile A1, and R-Car V4M.
> 
> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>

Thanks for confirming.

Johan