netdev - [PATCH 4/4] Hold RTNL while calling dev

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Message-ID: <20080506184147.GJ2217@solarflare.com>
Date:	Tue, 6 May 2008 19:41:48 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Jeff Garzik <jgarzik@...ox.com>, linux-x25@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH 4/4] Hold RTNL while calling dev_close()

dev_close() must be called holding the RTNL.  Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
 drivers/net/wan/x25_asy.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 249e180..069f8bb 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -32,6 +32,7 @@
 #include <linux/x25.h>
 #include <linux/lapb.h>
 #include <linux/init.h>
+#include <linux/rtnetlink.h>
 #include "x25_asy.h"
 
 #include <net/x25device.h>
@@ -601,8 +602,10 @@ static void x25_asy_close_tty(struct tty_struct *tty)
 	if (!sl || sl->magic != X25_ASY_MAGIC)
 		return;
 
+	rtnl_lock();
 	if (sl->dev->flags & IFF_UP)
 		dev_close(sl->dev);
+	rtnl_unlock();
 
 	tty->disc_data = NULL;
 	sl->tty = NULL;

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
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