linux-kernel - [PATCH] [4/23] pagemap: Avoid unused-but-set variable

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Message-Id: <20100610111039.ED2B2B1A2B@basil.firstfloor.org>
Date:	Thu, 10 Jun 2010 13:10:39 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [4/23] pagemap: Avoid unused-but-set variable 


Avoid quite a lot of warnings in header files in a gcc 4.6 -Wall builds

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

---
 include/linux/pagemap.h |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: linux-2.6.35-rc2-gcc/include/linux/pagemap.h
===================================================================
--- linux-2.6.35-rc2-gcc.orig/include/linux/pagemap.h
+++ linux-2.6.35-rc2-gcc/include/linux/pagemap.h
@@ -423,8 +423,10 @@ static inline int fault_in_pages_readabl
 		const char __user *end = uaddr + size - 1;
 
 		if (((unsigned long)uaddr & PAGE_MASK) !=
-				((unsigned long)end & PAGE_MASK))
+				((unsigned long)end & PAGE_MASK)) {
 		 	ret = __get_user(c, end);
+			(void)c;
+		}
 	}
 	return ret;
 }
--
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