From a66207121f85c54a3df4d347a3c5bdf6cb154b09 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 12 Dec 2007 19:21:56 -0800
Subject: [PATCH] [NET]: Check RTNL status in unregister_netdevice

The caller must hold the RTNL so let's check it in unregister_netdevice.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/core/dev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/dev.c b/net/core/dev.c
index 4ced3836690b..7153e94f50ad 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3971,6 +3971,8 @@ void synchronize_net(void)
 
 void unregister_netdevice(struct net_device *dev)
 {
+	ASSERT_RTNL();
+
 	rollback_registered(dev);
 	/* Finish processing unregister after unlock */
 	net_set_todo(dev);
-- 
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