diff options
| -rw-r--r-- | net/hsr/hsr_main.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/net/hsr/hsr_main.c b/net/hsr/hsr_main.c index 26d6c39f24e1..e2564de67603 100644 --- a/net/hsr/hsr_main.c +++ b/net/hsr/hsr_main.c @@ -15,12 +15,23 @@ #include "hsr_framereg.h" #include "hsr_slave.h" +static bool hsr_slave_empty(struct hsr_priv *hsr) +{ + struct hsr_port *port; + + hsr_for_each_port(hsr, port) + if (port->type != HSR_PT_MASTER) + return false; + return true; +} + static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event, void *ptr) { - struct net_device *dev; struct hsr_port *port, *master; + struct net_device *dev; struct hsr_priv *hsr; + LIST_HEAD(list_kill); int mtu_max; int res; @@ -85,8 +96,15 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event, master->dev->mtu = mtu_max; break; case NETDEV_UNREGISTER: - if (!is_hsr_master(dev)) + if (!is_hsr_master(dev)) { + master = hsr_port_get_hsr(port->hsr, HSR_PT_MASTER); hsr_del_port(port); + if (hsr_slave_empty(master->hsr)) { + unregister_netdevice_queue(master->dev, + &list_kill); + unregister_netdevice_many(&list_kill); + } + } break; case NETDEV_PRE_TYPE_CHANGE: /* HSR works only on Ethernet devices. Refuse slave to change |