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stmmac: priv->lock can be used uninitialized

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To reproduce: if connman (http://connman.net/) is started,
inserting the stmmac module triggers a "BUG: spinlock bad magic on CPU#0".

Registering the device in stmmac_probe() sends a notification to connman
which brings the interface up before the lock is initialized.

Signed-off-by: Vlad Lungu <vlad.lungu@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Lungu 2010-11-29 22:52:52 +00:00 committed by David S. Miller
parent 6dcdd1b369
commit f8e9616108
1 changed files with 2 additions and 2 deletions
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4
drivers/net/stmmac/stmmac_main.c
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@ -1509,6 +1509,8 @@ static int stmmac_probe(struct net_device *dev)
pr_warning("\tno valid MAC address;"
"please, use ifconfig or nwhwconfig!\n");
spin_lock_init(&priv->lock);
ret = register_netdev(dev);
if (ret) {
pr_err("%s: ERROR %i registering the device\n",
@ -1520,8 +1522,6 @@ static int stmmac_probe(struct net_device *dev)
dev->name, (dev->features & NETIF_F_SG) ? "on" : "off",
(dev->features & NETIF_F_HW_CSUM) ? "on" : "off");
spin_lock_init(&priv->lock);
return ret;
}