linux-kernel - [PATCH] sh: bug: add unreachable() to silence warnings

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Date:	Thu,  7 Aug 2014 03:42:20 +0200
From:	Nick Krause <xerofoiify@...il.com>
To:	Magnus Damm <magnus.damm@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Simon Horman <horms+renesas@...ge.net.au>,
	"GitAuthor: Nick Krause" <xerofoiify@...il.com>,
	linux-sh@...r.kernel.org (open list:SUPERH),
	linux-kernel@...r.kernel.org (open list)
Cc:	josh@...htriplett.org
Subject: [PATCH] sh: bug: add unreachable() to silence warnings

SuperH BUG() have warnings like

kernel/sched/core.c:2692:1: warning: control reaches end of non-void function
[-Wreturn-type]
net/core/ethtool.c:236:1: warning: control reaches end of non-void function
[-Wreturn-type]

Other BUG() implementations
have added unreachable() at end becuase of which I guess
it does not showthese errors. We can silence them using unreachable().

Signed-off-by: Nick Krause <xerofoify@...il.com>
---
 arch/sh/include/asm/bug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h
index dcf2780..1ae948f 100644
--- a/arch/sh/include/asm/bug.h
+++ b/arch/sh/include/asm/bug.h
@@ -48,6 +48,7 @@ do {							\
 		   "i" (__FILE__),			\
 		   "i" (__LINE__), "i" (0),		\
 		   "i" (sizeof(struct bug_entry)));	\
+	unreachable();					\
 } while (0)
 
 #define __WARN_TAINT(taint)				\
-- 
2.0.1

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