Re: [PATCH] pmdomain: fix early domain registration

[Geert Uytterhoeven]

Hi Johan,

On Tue, 9 Jun 2026 at 18:07, Johan Hovold <johan@xxxxxxxxxx> 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@xxxxxxxxxxxxxx>
> Link: https://lore.kernel.org/r/CAMuHMdUHabMGJyJ7e7yp7DLC+JJc9k6NK9p4anj2wRKNuwZUng@xxxxxxxxxxxxxx

s/Link/Closes/

> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>

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@xxxxxxxxx>

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