linux-kernel - [PATCH 2/2] bridge: fix compile error when compiling without IPv6 support

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Date:	Thu, 12 Jun 2014 01:41:24 +0200
From:	Linus Lüssing <linus.luessing@....de>
To:	netdev@...r.kernel.org
Cc:	bridge@...ts.linux-foundation.org,
	Stephen Hemminger <stephen@...workplumber.org>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org,
	Linus Lüssing <linus.luessing@....de>
Subject: [PATCH 2/2] bridge: fix compile error when compiling without IPv6 support

Some fields in "struct net_bridge" aren't available when compiling the
kernel without IPv6 support. Therefore adding a check/macro to skip the
complaining code sections in that case.

Introduced by 2cd4143192e8c60f66cb32c3a30c76d0470a372d
("bridge: memorize and export selected IGMP/MLD querier port")

Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Linus Lüssing <linus.luessing@....de>
---
 net/bridge/br_multicast.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 876e5fb..abfa0b65 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2246,11 +2246,13 @@ bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto)
 		    rcu_dereference(br->ip4_querier.port) == port)
 			goto unlock;
 		break;
+#if IS_ENABLED(CONFIG_IPV6)
 	case ETH_P_IPV6:
 		if (!timer_pending(&br->ip6_other_query.timer) ||
 		    rcu_dereference(br->ip6_querier.port) == port)
 			goto unlock;
 		break;
+#endif
 	default:
 		goto unlock;
 	}
-- 
1.7.10.4

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