netdev - [PATCH] net: Reorder initialization in ip_route

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Message-Id: <1339394724-28296-1-git-send-email-roland@kernel.org>
Date:	Sun, 10 Jun 2012 23:05:24 -0700
From:	Roland Dreier <roland@...nel.org>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Roland Dreier <roland@...estorage.com>
Subject: [PATCH] net: Reorder initialization in ip_route_output to fix gcc warning

From: Roland Dreier <roland@...estorage.com>

If I build with W=1, for every file that includes <net/route.h>, I get the warning

    include/net/route.h: In function 'ip_route_output':
    include/net/route.h:135:3: warning: initialized field overwritten [-Woverride-init]
    include/net/route.h:135:3: warning: (near initialization for 'fl4') [-Woverride-init]

(This is with "gcc (Debian 4.6.3-1) 4.6.3")

A fix seems pretty trivial: move the initialization of .flowi4_tos
earlier.  As far as I can tell, this has no effect on code generation.

Signed-off-by: Roland Dreier <roland@...estorage.com>
---
 include/net/route.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/route.h b/include/net/route.h
index ed2b78e..9870546 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -130,9 +130,9 @@ static inline struct rtable *ip_route_output(struct net *net, __be32 daddr,
 {
 	struct flowi4 fl4 = {
 		.flowi4_oif = oif,
+		.flowi4_tos = tos,
 		.daddr = daddr,
 		.saddr = saddr,
-		.flowi4_tos = tos,
 	};
 	return ip_route_output_key(net, &fl4);
 }
-- 
1.7.9.5

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