diff options
Diffstat (limited to 'drivers/net/can/led.c')
| -rw-r--r-- | drivers/net/can/led.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/can/led.c b/drivers/net/can/led.c index c50a0d741c57..f27fca65dc4a 100644 --- a/drivers/net/can/led.c +++ b/drivers/net/can/led.c @@ -1,5 +1,6 @@ /* * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com> + * Copyright 2012, Kurt Van Dijck <kurt.van.dijck@eia.be> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -84,3 +85,40 @@ void devm_can_led_init(struct net_device *netdev) devres_add(&netdev->dev, res); } EXPORT_SYMBOL_GPL(devm_can_led_init); + +/* NETDEV rename notifier to rename the associated led triggers too */ +static int can_led_notifier(struct notifier_block *nb, unsigned long msg, + void *data) +{ + struct net_device *netdev = data; + struct can_priv *priv = safe_candev_priv(netdev); + char name[CAN_LED_NAME_SZ]; + + if (!priv) + return NOTIFY_DONE; + + if (msg == NETDEV_CHANGENAME) { + snprintf(name, sizeof(name), "%s-tx", netdev->name); + led_trigger_rename_static(name, priv->tx_led_trig); + + snprintf(name, sizeof(name), "%s-rx", netdev->name); + led_trigger_rename_static(name, priv->rx_led_trig); + } + + return NOTIFY_DONE; +} + +/* notifier block for netdevice event */ +static struct notifier_block can_netdev_notifier __read_mostly = { + .notifier_call = can_led_notifier, +}; + +int __init can_led_notifier_init(void) +{ + return register_netdevice_notifier(&can_netdev_notifier); +} + +void __exit can_led_notifier_exit(void) +{ + unregister_netdevice_notifier(&can_netdev_notifier); +} |