linux-kernel - [PATCH] [1/23] x86: percpu: Avoid warnings of unused variables in per cpu

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Message-Id: <20100610111036.DAE8EB1A2C@basil.firstfloor.org>
Date:	Thu, 10 Jun 2010 13:10:36 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	tj@...nel.org, x86@...nel.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] [1/23] x86: percpu: Avoid warnings of unused variables in per cpu


Avoid hundreds of warnings with a gcc 4.6 -Wall build

Cc: tj@...nel.org
Cc: x86@...nel.org

Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 arch/x86/include/asm/percpu.h |    2 ++
 1 file changed, 2 insertions(+)

Index: linux-2.6.35-rc2-gcc/arch/x86/include/asm/percpu.h
===================================================================
--- linux-2.6.35-rc2-gcc.orig/arch/x86/include/asm/percpu.h
+++ linux-2.6.35-rc2-gcc/arch/x86/include/asm/percpu.h
@@ -77,6 +77,7 @@ do {							\
 	if (0) {					\
 		pto_T__ pto_tmp__;			\
 		pto_tmp__ = (val);			\
+		(void)pto_tmp__;			\
 	}						\
 	switch (sizeof(var)) {				\
 	case 1:						\
@@ -115,6 +116,7 @@ do {									\
 	if (0) {							\
 		pao_T__ pao_tmp__;					\
 		pao_tmp__ = (val);					\
+		(void)pao_tmp__;					\
 	}								\
 	switch (sizeof(var)) {						\
 	case 1:								\
--
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