[PATCH 1/2] kbuild: Always validate DT binding examples against all schemas

Rob Herring
2020-02-21T22:29:58Z

Most folks only run dt_binding_check on the single schema they care about
by setting DT_SCHEMA_FILES. That means example is only checked against
that one schema which is not always sufficient.

Let's address this by splitting processed-schema.yaml into 2 files: one
that's always all schemas for the examples and one that's just the schema
in DT_SCHEMA_FILES for dtbs.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
Documentation/devicetree/bindings/Makefile | 20 +++++++++++---------
scripts/Makefile.lib | 12 ++++++++----
2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
index 646cb3525373..16498eb19f5f 100644
--- a/Documentation/devicetree/bindings/Makefile
+++ b/Documentation/devicetree/bindings/Makefile
@@ -11,26 +11,28 @@ quiet_cmd_chk_binding = CHKDT $(patsubst $(srctree)/%,%,$<)
$(obj)/%.example.dts: $(src)/%.yaml FORCE
$(call if_changed,chk_binding)

-DT_TMP_SCHEMA := processed-schema.yaml
-
quiet_cmd_mk_schema = SCHEMA $@
- cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
+ cmd_mk_schema = $(DT_MK_SCHEMA) $(2) -o $@ $(real-prereqs)

-DT_DOCS = $(shell \
+DT_DOCS = $(addprefix $(src)/, \
+ $(shell \
cd $(srctree)/$(src) && \
find * \( -name '*.yaml' ! \
- -name $(DT_TMP_SCHEMA) ! \
+ -name 'processed-schema-*' ! \
-name '*.example.dt.yaml' \) \
- )
+ ))

-DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
+DT_SCHEMA_FILES ?= $(DT_DOCS)

ifeq ($(CHECK_DTBS),)
extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
extra-y += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
endif

-$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
+$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
$(call if_changed,mk_schema)

-extra-y += $(DT_TMP_SCHEMA)
+$(obj)/processed-schema-dtbs.yaml: $(DT_SCHEMA_FILES) FORCE
+ $(call if_changed,mk_schema, $(DT_MK_SCHEMA_FLAGS))
+
+extra-y += processed-schema-examples.yaml processed-schema-dtbs.yaml
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index bae62549e3d2..78fa1a3d983a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -297,17 +297,21 @@ $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE

DT_CHECKER ?= dt-validate
DT_BINDING_DIR := Documentation/devicetree/bindings
-DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
+DT_DTBS_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema-dtbs.yaml
+DT_EXAMPLES_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema-examples.yaml

quiet_cmd_dtb_check = CHECK $@
- cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ ;
+ cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(2) $@ ;

define rule_dtc_dt_yaml
$(call cmd_and_fixdep,dtc,yaml)
- $(call cmd,dtb_check)
+ $(call cmd,dtb_check,$(word 2, $(real-prereqs)))
endef

-$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
+$(obj)/%.example.dt.yaml: $(src)/%.example.dts $(DT_EXAMPLES_SCHEMA) $(DTC) FORCE
+ $(call if_changed_rule,dtc_dt_yaml)
+
+$(obj)/%.dt.yaml: $(src)/%.dts $(DT_DTBS_SCHEMA) $(DTC) FORCE
$(call if_changed_rule,dtc_dt_yaml)

dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
--
2.20.1