linux-kernel - Re: [PATCH 1/1] dt-bindings: Fix error in 'make dtbs_check' when using DT_SCHEMA

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Date:   Mon, 7 Dec 2020 15:48:31 -0600
From:   Rob Herring <robh@...nel.org>
To:     Cristian Ciocaltea <cristian.ciocaltea@...il.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] dt-bindings: Fix error in 'make dtbs_check' when
 using DT_SCHEMA_FILES

On Wed, Nov 18, 2020 at 05:20:50PM +0200, Cristian Ciocaltea wrote:
> If DT_SCHEMA_FILES is specified and contains more than one file paths,

If that worked before, it was by chance. :) Yes, it's called '_FILES', 
but more than one was on my todo list.

Anyways, I'll apply it.

> 'make dtbs_check' fails with the following message:
> 
>   $ make dtbs_check DT_SCHEMA_FILES="path/to/schema1.yaml path/to/schema2.yaml"
>   SCHEMA  Documentation/devicetree/bindings/processed-schema.json
>   Documentation/devicetree/bindings/Makefile:77: recipe for target 'Documentation/devicetree/bindings/processed-schema.json' failed
>   make[1]: *** [Documentation/devicetree/bindings/processed-schema.json] Error 255
>   make[1]: *** Deleting file 'Documentation/devicetree/bindings/processed-schema.json'
>   Makefile:1364: recipe for target 'dt_binding_check' failed
>   make: *** [dt_binding_check] Error 2
> 
> The error code 255 is returned by 'dt-mk-schema' when invoked as
> 'dt-mk-schema -j -u @<tmp-file>', where '<tmp-file>' is a temporary
> file that is generated to contain a list of SPACE delimited schema
> file paths, as indicated via DT_SCHEMA_FILES.
> 
> However, it seems the file format has been recently changed in
> 'dt-mk-schema', which now expects each schema path to be provided on
> a separate line:
> 
>  $ dt-mk-schema --version
>  2020.12.dev4+g6de1c45
> 
> Therefore, let's change '<tmp-file>' content format from
> 
>  path/to/schema1.yaml path/to/schema2.yaml ... path/to/schemaN.yaml
> 
> to
> 
>  path/to/schema1.yaml
>  path/to/schema2.yaml
>  ...
>  path/to/schemaN.yaml
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...il.com>
> ---
>  Documentation/devicetree/bindings/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> index f50420099a55..643eb873fd51 100644
> --- a/Documentation/devicetree/bindings/Makefile
> +++ b/Documentation/devicetree/bindings/Makefile
> @@ -37,7 +37,7 @@ quiet_cmd_chk_bindings = CHKDT   $@
>  quiet_cmd_mk_schema = SCHEMA  $@
>        cmd_mk_schema = f=$$(mktemp) ; \
>                        $(if $(DT_MK_SCHEMA_FLAGS), \
> -                           echo $(real-prereqs), \
> +                           printf '%s\n' $(real-prereqs), \
>                             $(find_cmd)) > $$f ; \
>                        $(DT_MK_SCHEMA) -j $(DT_MK_SCHEMA_FLAGS) @$$f > $@ ; \
>  		      rm -f $$f
> -- 
> 2.29.2
>