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Subjectkbuild: separate kerneldoc warnings from compiler warnings
Date
This patch introduces a new build flag 'K=1' which controls whether kerneldoc
warnings should be issued, separating them from the compiler warnings that W=
controls.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>

diff --git a/Makefile b/Makefile
index 29abe44ada91..b1c0f9484a66 100644
--- a/Makefile
+++ b/Makefile
@@ -1605,6 +1605,7 @@ PHONY += help
@echo ' (sparse by default)'
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
+ @echo ' make K=1 [targets] Warn about problems in kerneldoc comments'
@echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where'
@echo ' 1: warnings which may be relevant and do not occur too often'
@echo ' 2: warnings which occur quite often but may still be relevant'
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 2e8810b7e5ed..9bcb77f5a5f1 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -100,7 +100,7 @@ else ifeq ($(KBUILD_CHECKSRC),2)
cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
endif

-ifneq ($(KBUILD_EXTRA_WARN),)
+ifneq ($(KBUILD_KDOC_WARN),)
cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
endif

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 4aea7cf71d11..3fd5881c91b0 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -17,6 +17,12 @@ endif

export KBUILD_EXTRA_WARN

+ifeq ("$(origin K)", "command line")
+ KBUILD_KDOC_WARN := $(K)
+endif
+
+export KBUILD_KDOC_WARN
+
#
# W=1 - warnings which may be relevant and do not occur too often
#

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