From 4b260a98f1afc74cd6b73ce0616d76b441dbe8c5 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 12 Jul 2006 13:26:26 -0700 Subject: [PATCH] [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: Ralf Baechle Signed-off-by: David S. Miller --- net/netrom/af_netrom.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 672d5f803f8f..1d50f801f181 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -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; } -- 2.20.1