netdev - [PATCH 1/3] netfilter: xt_LOG: don't use xchg() for simple assignment

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Date:	Tue,  3 Apr 2012 12:13:19 +0200
From:	pablo@...filter.org
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net
Subject: [PATCH 1/3] netfilter: xt_LOG: don't use xchg() for simple assignment

From: Jan Beulich <JBeulich@...e.com>

At least on ia64 the (bogus) use of xchg() here results in the compiler
warning about an unused expression result. As only an assignment is
intended here, convert it to such.

Signed-off-by: Jan Beulich <jbeulich@...e.com>
Acked-by: Eric Dumazet <eric.dumazet@...il.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 include/net/netfilter/xt_log.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/net/netfilter/xt_log.h b/include/net/netfilter/xt_log.h
index 7e1544e..9d9756c 100644
--- a/include/net/netfilter/xt_log.h
+++ b/include/net/netfilter/xt_log.h
@@ -47,7 +47,7 @@ static void sb_close(struct sbuff *m)
 	if (likely(m != &emergency))
 		kfree(m);
 	else {
-		xchg(&emergency_ptr, m);
+		emergency_ptr = m;
 		local_bh_enable();
 	}
 }
-- 
1.7.2.5

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