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Commit 4b260a98 authored by Ralf Baechle's avatar Ralf Baechle Committed by David S. Miller
Browse files

[NETROM] lockdep: fix false positive 



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: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b1d21ca8

net/netrom/af_netrom.c

+9 −0
Original line number Diff line number Diff line
@@ -65,6 +65,14 @@ static DEFINE_SPINLOCK(nr_list_lock); 


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.

 */
@@ -1405,6 +1413,7 @@ static int __init nr_proto_init(void) 
			free_netdev(dev);

			goto fail;

		}

		lockdep_set_class(&dev->_xmit_lock, &nr_netdev_xmit_lock_key);

		dev_nr[i] = dev;

	}