fixups: Allow "items" entries to be boolean

Empty schemas are allowed, so a boolean should be as well.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

dtschema/fixups.py

@@ -66,6 +66,8 @@ def _fixup_remove_empty_items(subschema):
         return
 
     for item in subschema['items']:
+        if not isinstance(item, dict):
+            continue
         item.pop('description', None)
         _fixup_remove_empty_items(item)
         if item != {}:

dtschema/lib.py

@@ -33,6 +33,8 @@ def _value_is_type(subschema, key, type):
 
 
 def _is_int_schema(subschema):
+    if not isinstance(subschema, dict):
+        return False
     for match in ['const', 'enum', 'minimum', 'maximum']:
         if _value_is_type(subschema, match, int):
             return True
@@ -41,6 +43,8 @@ def _is_int_schema(subschema):
 
 
 def _is_string_schema(subschema):
+    if not isinstance(subschema, dict):
+        return False
     for match in ['const', 'enum', 'pattern']:
         if _value_is_type(subschema, match, str):
             return True

test/schemas/good-example.yaml

@@ -27,6 +27,7 @@ properties:
           - enum:
               - vendor,soc1-ip
       - items:
+          - false
           - not: {}
             description: Needs a specific compatible
           - const: vendor,soc1-ip