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[NETROM] lockdep: fix false positive

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NETROM network devices are virtual network devices encapsulating NETROM
frames into AX.25 which will be sent through an AX.25 device, so form a
special "super class" of normal net devices; split their locks off into a
separate class since they always nest.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ralf Baechle 2006-07-12 13:26:26 -07:00 committed by David S. Miller
parent b1d21ca83c
commit 4b260a98f1
1 changed files with 9 additions and 0 deletions
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9
net/netrom/af_netrom.c
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@ -65,6 +65,14 @@ static DEFINE_SPINLOCK(nr_list_lock);
static const struct proto_ops nr_proto_ops; static const struct proto_ops nr_proto_ops;
/*
* NETROM network devices are virtual network devices encapsulating NETROM
* frames into AX.25 which will be sent through an AX.25 device, so form a
* special "super class" of normal net devices; split their locks off into a
* separate class since they always nest.
*/
static struct lock_class_key nr_netdev_xmit_lock_key;
/* /*
* Socket removal during an interrupt is now safe. * Socket removal during an interrupt is now safe.
*/ */
@ -1405,6 +1413,7 @@ static int __init nr_proto_init(void)
free_netdev(dev); free_netdev(dev);
goto fail; goto fail;
} }
lockdep_set_class(&dev->_xmit_lock, &nr_netdev_xmit_lock_key);
dev_nr[i] = dev; dev_nr[i] = dev;
} }