[PATCH] dt-bindings: kbuild: Print a warning if yamllint is not found

[Rob Herring]

Running yamllint is effectively required for binding schemas, so print a
warning if not found rather than silently skipping running it.

Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
index 5138d10e0601..61ec18ecc931 100644
--- a/Documentation/devicetree/bindings/Makefile
+++ b/Documentation/devicetree/bindings/Makefile
@@ -3,7 +3,8 @@ DT_DOC_CHECKER ?= dt-doc-validate
 DT_EXTRACT_EX ?= dt-extract-example
 DT_MK_SCHEMA ?= dt-mk-schema
 
-DT_SCHEMA_LINT = $(shell which yamllint)
+DT_SCHEMA_LINT := $(shell which yamllint || \
+  echo "warning: yamllint not installed, skipping. To install, run 'pip install yamllint'" >&2)
 
 DT_SCHEMA_MIN_VERSION = 2021.2.1
 
-- 
2.32.0