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authorRalf Baechle <ralf@linux-mips.org>2006-07-12 13:26:26 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-12 13:59:02 -0700
commit4b260a98f1afc74cd6b73ce0616d76b441dbe8c5 (patch)
treebba0f6b35326b0e6eba15b6ce33f3393564cc4d0
parentb1d21ca83c9139e7889a754934bcdd7071157560 (diff)
downloadlinux-4b260a98f1afc74cd6b73ce0616d76b441dbe8c5.tar.bz2
[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 <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/netrom/af_netrom.c9
1 files changed, 9 insertions, 0 deletions
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
@@ -66,6 +66,14 @@ 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.
*/
static void nr_remove_socket(struct sock *sk)
@@ -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;
}