From de8cf95047cfe06d0bc3b7bbbe4fd337d47da2c7 Mon Sep 17 00:00:00 2001
From: Johannes Thumshirn <jthumshirn@suse.de>
Date: Wed, 30 Aug 2017 16:04:13 +0200
Subject: [PATCH] Kbuild: enable -Wunused-macros warning for "make W=2"

We have lots of dead defines and macros in drivers, lets offer users a way
to detect and eventually remove them.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
 scripts/Makefile.extrawarn | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index fb3522fd87029..ae8a1357d01df 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -37,6 +37,7 @@ warning-2 += $(call cc-option, -Wlogical-op)
 warning-2 += $(call cc-option, -Wmissing-field-initializers)
 warning-2 += $(call cc-option, -Wsign-compare)
 warning-2 += $(call cc-option, -Wmaybe-uninitialized)
+warning-2 += $(call cc-option, -Wunused-macros)
 
 warning-3 := -Wbad-function-cast
 warning-3 += -Wcast-qual
-- 
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