Re: [PATCH net-next v4 1/7] dt-bindings: net: dsa: Require ports or ethernet-ports

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On Wed, Oct 18, 2023 at 05:32:48AM -0500, Rob Herring wrote:
> 
> On Wed, 18 Oct 2023 11:03:40 +0200, Linus Walleij wrote:
> > Bindings using dsa.yaml#/$defs/ethernet-ports specify that
> > a DSA switch node need to have a ports or ethernet-ports
> > subnode, and that is actually required, so add requirements
> > using oneOf.
> > 
> > Suggested-by: Rob Herring <robh@xxxxxxxxxx>
> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/net/dsa/dsa.yaml | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> 
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
> 
> yamllint warnings/errors:
> ./Documentation/devicetree/bindings/net/dsa/dsa.yaml:60:7: [warning] wrong indentation: expected 8 but found 6 (indentation)
> ./Documentation/devicetree/bindings/net/dsa/dsa.yaml:62:7: [warning] wrong indentation: expected 8 but found 6 (indentation)
> 
> dtschema/dtc warnings/errors:
> Traceback (most recent call last):
>   File "/usr/local/bin/dt-doc-validate", line 64, in <module>
>     ret |= check_doc(f)
>            ^^^^^^^^^^^^
>   File "/usr/local/bin/dt-doc-validate", line 32, in check_doc
>     for error in sorted(dtsch.iter_errors(), key=lambda e: e.linecol):
>                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>   File "/usr/local/lib/python3.11/dist-packages/dtschema/schema.py", line 125, in iter_errors
>     self.annotate_error(scherr, meta_schema, scherr.schema_path)
>   File "/usr/local/lib/python3.11/dist-packages/dtschema/schema.py", line 104, in annotate_error
>     schema = schema[p]
>              ~~~~~~^^^
> KeyError: 'type'

Locally, on an older version of dt-schema, I see
/stuff/linux-dt/Documentation/devicetree/bindings/net/dsa/dsa.yaml: $defs: 'oneOf' should not be valid under {'$ref': '#/definitions/json-schema-prop-names'}
	hint: A json-schema keyword was found in $defs key.
	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
/stuff/linux-dt/Documentation/devicetree/bindings/net/dsa/dsa.yaml: $defs:oneOf: [{'required': ['ports']}, {'required': ['ethernet-ports']}] is not of type 'object'
	hint: $defs entries must contain schemas
	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
  SCHEMA  Documentation/devicetree/bindings/processed-schema.json

On the latest version I see the error from the bot.

Doing 
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.yaml b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
index bd6948e4fd9e..25e5950d51ae 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
@@ -55,10 +55,10 @@ $defs:
             $ref: dsa-port.yaml#
             unevaluatedProperties: false
 
-  oneOf:
-    - required:
-      - ports
-    - required:
-      - ethernet-ports
+oneOf:
+  - required:
+    - ports
+  - required:
+    - ethernet-ports
 
 ...

resolves both issues, but the older version of dt-schema definitely had
better error reporting in this case!

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