linux-kernel - [PATCH] Kbuild: enable -Wunused-macros warning for "make W=1"

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Date:   Thu,  3 Aug 2017 12:09:24 +0200
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <mmarek@...e.com>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johannes Thumshirn <jthumshirn@...e.de>
Subject: [PATCH] Kbuild: enable -Wunused-macros warning for "make W=1"

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@...e.de>
---
 scripts/Makefile.extrawarn | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index fb3522fd8702..8ab8bc91da55 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -25,6 +25,7 @@ warning-1 += -Wold-style-definition
 warning-1 += $(call cc-option, -Wmissing-include-dirs)
 warning-1 += $(call cc-option, -Wunused-but-set-variable)
 warning-1 += $(call cc-option, -Wunused-const-variable)
+warning-1 += $(call cc-option, -Wunused-macros)
 warning-1 += $(call cc-disable-warning, missing-field-initializers)
 warning-1 += $(call cc-disable-warning, sign-compare)
 
-- 
2.12.3