linux-kernel - Re: [PATCH] kbuild: Optionally enable schema checks for %.dtb targets

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Date:   Tue, 20 Dec 2022 21:59:20 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Marek Vasut <marex@...x.de>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: Optionally enable schema checks for %.dtb targets

On Tue, Dec 20, 2022 at 10:32 AM Rob Herring <robh@...nel.org> wrote:
>
> While not documented, schema checks for single dtb targets mostly work
> already by setting 'CHECK_DTBS=1'. However, the dependencies are not
> handled and it only works if 'make dt_bindings_check' was run first and
> generated processed-schema.json. In addition, changing a binding file
> doesn't cause the schema to be rebuilt and dtb to be revalidated.
>
> Making this work turns out to be simple. Whenever CHECK_DTBS is set,
> make 'dt_binding_check' a 'dtbs_prepare' dependency.
>
> I reimplemented here what Masahiro had originally come up with a while
> back.


Oh, I just recalled this patch.

https://lore.kernel.org/all/CAA8EJprdCftvie3UF9QpCWr9oQ5SQbqW8OPOHg0qigf9=RXU-w@mail.gmail.com/T/#m2ce6b1de3c74333645831399c0d1775129d7661a

Dritry tested it.

Suggested-by: Masahiro Yamada <masahiroy@...nel.org>
Acked-by: Masahiro Yamada <masahiroy@...nel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>




>
> Cc: Marek Vasut <marex@...x.de>
> Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
>  Makefile | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index 6aa709df6bde..a99d5c4de0fc 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1467,7 +1467,10 @@ dtbs_prepare: include/config/kernel.release scripts_dtc
>
>  ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
>  export CHECK_DTBS=y
> -dtbs: dt_binding_check
> +endif
> +
> +ifneq ($(CHECK_DTBS),)
> +dtbs_prepare: dt_binding_check
>  endif
>
>  dtbs_check: dtbs
> --
> 2.35.1
>


--
Best Regards
Masahiro Yamada