[NETROM] lockdep: fix false positive (4b260a98) · Commits · 戴 / test

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>

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;
		}

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