diff options
Diffstat (limited to 'drivers/net/hamradio/bpqether.c')
| -rw-r--r-- | drivers/net/hamradio/bpqether.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c index fbea6f232819..206688154fdf 100644 --- a/drivers/net/hamradio/bpqether.c +++ b/drivers/net/hamradio/bpqether.c @@ -107,6 +107,25 @@ struct bpqdev { static LIST_HEAD(bpq_devices); +/* + * bpqether network devices are paired with ethernet devices below them, so + * form a special "super class" of normal ethernet devices; split their locks + * off into a separate class since they always nest. + */ +static struct lock_class_key bpq_netdev_xmit_lock_key; + +static void bpq_set_lockdep_class_one(struct net_device *dev, + struct netdev_queue *txq, + void *_unused) +{ + lockdep_set_class(&txq->_xmit_lock, &bpq_netdev_xmit_lock_key); +} + +static void bpq_set_lockdep_class(struct net_device *dev) +{ + netdev_for_each_tx_queue(dev, bpq_set_lockdep_class_one, NULL); +} + /* ------------------------------------------------------------------------ */ @@ -477,6 +496,7 @@ static int bpq_new_device(struct net_device *edev) err = register_netdevice(ndev); if (err) goto error; + bpq_set_lockdep_class(ndev); /* List protected by RTNL */ list_add_rcu(&bpq->bpq_list, &bpq_devices); |