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-rw-r--r--net/8021q/vlan.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 3948949a609a..458031bfff55 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -364,6 +364,14 @@ static void vlan_transfer_operstate(const struct net_device *dev, struct net_dev
364 } 364 }
365} 365}
366 366
367/*
368 * vlan network devices have devices nesting below it, and are a special
369 * "super class" of normal network devices; split their locks off into a
370 * separate class since they always nest.
371 */
372static struct lock_class_key vlan_netdev_xmit_lock_key;
373
374
367/* Attach a VLAN device to a mac address (ie Ethernet Card). 375/* Attach a VLAN device to a mac address (ie Ethernet Card).
368 * Returns the device that was created, or NULL if there was 376 * Returns the device that was created, or NULL if there was
369 * an error of some kind. 377 * an error of some kind.
@@ -460,6 +468,7 @@ static struct net_device *register_vlan_device(const char *eth_IF_name,
460 468
461 new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, 469 new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name,
462 vlan_setup); 470 vlan_setup);
471
463 if (new_dev == NULL) 472 if (new_dev == NULL)
464 goto out_unlock; 473 goto out_unlock;
465 474
@@ -518,6 +527,8 @@ static struct net_device *register_vlan_device(const char *eth_IF_name,
518 if (register_netdevice(new_dev)) 527 if (register_netdevice(new_dev))
519 goto out_free_newdev; 528 goto out_free_newdev;
520 529
530 lockdep_set_class(&new_dev->_xmit_lock, &vlan_netdev_xmit_lock_key);
531
521 new_dev->iflink = real_dev->ifindex; 532 new_dev->iflink = real_dev->ifindex;
522 vlan_transfer_operstate(real_dev, new_dev); 533 vlan_transfer_operstate(real_dev, new_dev);
523 linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */ 534 linkwatch_fire_event(new_dev); /* _MUST_ call rfc2863_policy() */