From: Vlad Lungu Date: Mon, 29 Nov 2010 22:52:52 +0000 (+0000) Subject: stmmac: priv->lock can be used uninitialized X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f8e9616108c7003e6499c162459258f11c9dc85e;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git stmmac: priv->lock can be used uninitialized 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c index 06bc6034ce8..2114837809e 100644 --- a/drivers/net/stmmac/stmmac_main.c +++ b/drivers/net/stmmac/stmmac_main.c @@ -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; }