linux-kernel - [PATCH] remove untouched code in kfifo

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Date:	Thu, 18 Oct 2012 21:59:25 +0800
From:	Wei Yang <weiyang@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org, stefani@...bold.net, jkosina@...e.cz
Cc:	Wei Yang <weiyang@...ux.vnet.ibm.com>
Subject: [PATCH] remove untouched code in kfifo_in

In kfifo_in marco, one piece of code is arounded by if(0). This code in
introduced by Stefani Seibold <stefani@...bold.net> to suppress a compiler
warning. This warning is not there with the upgrade of gcc version. 

This patch just remove this code.
---
 include/linux/kfifo.h |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 10308c6..e7015bb 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -512,10 +512,6 @@ __kfifo_uint_must_check_helper( \
 	unsigned long __n = (n); \
 	const size_t __recsize = sizeof(*__tmp->rectype); \
 	struct __kfifo *__kfifo = &__tmp->kfifo; \
-	if (0) { \
-		typeof(__tmp->ptr_const) __dummy __attribute__ ((unused)); \
-		__dummy = (typeof(__buf))NULL; \
-	} \
 	(__recsize) ?\
 	__kfifo_in_r(__kfifo, __buf, __n, __recsize) : \
 	__kfifo_in(__kfifo, __buf, __n); \
-- 
1.7.5.4

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