Re: [PATCH v3 4/6] of: dynamic: Fix race in getting old property when updating property

[Geert Uytterhoeven]

Hi Rob,

Thanks for your patch!

On Fri, Aug 18, 2023 at 10:41 PM Rob Herring <robh@xxxxxxxxxx> wrote:
> __of_update_property() returns the existing property if there is one, but
> that value is never added to the changeset. Updates work because the
> existing property is also retrieved in of_changeset_action(), but that is

Perhaps s/is also retrieved/was also retrieved before/, as
of_overlay_apply() calls build_changeset() before
__of_changeset_apply_entries()?

> racy as of_changeset_action() doesn't hold any locks. The property could
> be changed before the changeset is applied.
>
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
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