From: Fabio Baltieri <fabio.baltieri@gmail.com>
To: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>,
Wolfgang Grandegger <wg@grandegger.com>,
linux-kernel@vger.kernel.org, linux-can@vger.kernel.org
Subject: Re: [PATCH v3] can: rename LED trigger name on netdev renames
Date: Mon, 10 Sep 2012 20:40:50 +0200 [thread overview]
Message-ID: <20120910184049.GD2006@gmail.com> (raw)
In-Reply-To: <504E30AE.50201@hartkopp.net>
On Mon, Sep 10, 2012 at 08:25:50PM +0200, Oliver Hartkopp wrote:
> On 10.09.2012 16:28, Kurt Van Dijck wrote:
> > Fabio,
> >
> > I followed all your contribution to this patch.
Thanks!
> > diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
> > index 6c1e704..55ad320 100644
> > --- a/drivers/net/can/dev.c
> > +++ b/drivers/net/can/dev.c
> > @@ -25,6 +25,7 @@
> > #include <linux/can.h>
> > #include <linux/can/dev.h>
> > #include <linux/can/netlink.h>
> > +#include <linux/can/led.h>
> > #include <net/rtnetlink.h>
> >
> > #define MOD_DESC "CAN device driver interface"
> > @@ -811,6 +812,10 @@ static __init int can_dev_init(void)
> > {
> > int err;
> >
> > + can_led_notifier_init();
> > +
> > + can_led_notifier_init();
> > +
>
>
> two times?
>
> > err = rtnl_link_register(&can_link_ops);
> > if (!err)
> > printk(KERN_INFO MOD_DESC "\n");
> > @@ -822,6 +827,8 @@ module_init(can_dev_init);
> > static __exit void can_dev_exit(void)
> > {
> > rtnl_link_unregister(&can_link_ops);
> > +
> > + can_led_notifier_exit();
> > }
> > module_exit(can_dev_exit);
> >
> > diff --git a/drivers/net/can/led.c b/drivers/net/can/led.c
> > index eaa14ac..1663b28 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
> > @@ -87,3 +88,39 @@ 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];
> > +
>
>
> What about
>
> if (!priv)
> return NOTIFY_DONE;
>
> :-)
>
> You created that nice function but you are accessing priv->tx_led_trig below
> without checking the output of save_candev_priv() ...
Also, I noticed you removed the namespace check... wasn't it needed?
(just asking, I have no idea).
> > + if (msg == NETDEV_CHANGENAME) {
> > + snprintf(name, sizeof(name), "%s-tx", netdev->name);
> > + led_trigger_rename_static(name, priv->tx_led_trig);
> > +
whitespaces here? (checkpatch)
Fabio
> > + 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);
> > +}
> > diff --git a/include/linux/can/led.h b/include/linux/can/led.h
> > index 12d5549..9c1167b 100644
> > --- a/include/linux/can/led.h
> > +++ b/include/linux/can/led.h
> > @@ -26,6 +26,8 @@ enum can_led_event {
> >
> > void can_led_event(struct net_device *netdev, enum can_led_event event);
> > void devm_can_led_init(struct net_device *netdev);
> > +int __init can_led_notifier_init(void);
> > +void __exit can_led_notifier_exit(void);
> >
> > #else
> >
> > @@ -36,6 +38,13 @@ static inline void can_led_event(struct net_device *netdev,
> > static inline void devm_can_led_init(struct net_device *netdev)
> > {
> > }
> > +static inline int can_led_notifier_init(void)
> > +{
> > + return 0;
> > +}
> > +static inline void can_led_notifier_exit(void)
> > +{
> > +}
> >
> > #endif
--
Fabio Baltieri
next prev parent reply other threads:[~2012-09-10 18:39 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-30 19:20 [PATCH can-next v3 1/2] can: add tx/rx LED trigger support Fabio Baltieri
2012-07-30 19:20 ` [PATCH can-next v3 2/2] can: flexcan: add " Fabio Baltieri
2012-07-30 21:17 ` [PATCH can-next v3 1/2] can: add tx/rx " Marc Kleine-Budde
2012-07-31 6:57 ` Fabio Baltieri
2012-07-31 7:10 ` Marc Kleine-Budde
2012-07-31 11:57 ` Fabio Baltieri
2012-07-31 12:00 ` Marc Kleine-Budde
2012-07-31 22:05 ` [PATCH can-next v4] " Fabio Baltieri
2012-08-01 9:36 ` Marc Kleine-Budde
2012-08-01 10:07 ` Marc Kleine-Budde
2012-08-01 10:30 ` Fabio Baltieri
2012-08-01 11:37 ` Marc Kleine-Budde
2012-08-01 11:49 ` [PATCH can-next v5 1/2] " Fabio Baltieri
2012-08-01 11:49 ` [PATCH can-next v5 2/2] can: flexcan: add " Fabio Baltieri
2012-08-01 11:53 ` Marc Kleine-Budde
2012-08-01 12:24 ` Fabio Baltieri
2012-08-01 12:30 ` Marc Kleine-Budde
2012-08-01 21:02 ` Marc Kleine-Budde
2012-08-01 11:59 ` [PATCH can-next v5 1/2] can: add tx/rx " Marc Kleine-Budde
2012-08-01 12:06 ` Oliver Hartkopp
2012-08-01 12:18 ` Marc Kleine-Budde
2012-08-01 18:21 ` [PATCH can-next v6] " Fabio Baltieri
2012-08-01 21:00 ` Marc Kleine-Budde
2012-08-01 22:38 ` Fabio Baltieri
2012-08-01 21:05 ` Oliver Hartkopp
2012-08-24 5:10 ` Kurt Van Dijck
2012-08-24 11:28 ` Marc Kleine-Budde
2012-08-24 12:42 ` Kurt Van Dijck
2012-08-24 22:01 ` Fabio Baltieri
2012-08-25 20:25 ` Kurt Van Dijck
2012-09-03 12:40 ` Marc Kleine-Budde
2012-09-03 18:13 ` Kurt Van Dijck
2012-09-03 18:29 ` Fabio Baltieri
2012-09-03 20:54 ` Oliver Hartkopp
2012-09-04 7:11 ` Kurt Van Dijck
2012-09-04 9:29 ` [PATCH] can: rename LED trigger name on netdev renames Kurt Van Dijck
2012-09-06 18:59 ` Fabio Baltieri
2012-09-06 19:31 ` Oliver Hartkopp
2012-09-06 20:46 ` Fabio Baltieri
2012-09-07 7:19 ` Kurt Van Dijck
2012-09-09 16:17 ` [PATCH v2] " Fabio Baltieri
2012-09-10 14:25 ` [PATCH] can: export a safe netdev_priv wrapper for candev Kurt Van Dijck
2012-09-10 18:22 ` Oliver Hartkopp
2012-09-10 18:29 ` Fabio Baltieri
2012-09-10 19:55 ` [PATCH v2] " Kurt Van Dijck
2012-09-10 14:28 ` [PATCH v3] can: rename LED trigger name on netdev renames Kurt Van Dijck
2012-09-10 18:25 ` Oliver Hartkopp
2012-09-10 18:40 ` Fabio Baltieri [this message]
2012-09-10 19:01 ` Oliver Hartkopp
2012-09-10 20:08 ` Kurt Van Dijck
2012-09-11 5:42 ` Oliver Hartkopp
2012-09-11 7:13 ` Fabio Baltieri
2012-09-12 7:22 ` Kurt Van Dijck
2012-09-11 8:05 ` Kurt Van Dijck
2012-09-10 20:06 ` [PATCH v4] " Kurt Van Dijck
2012-09-11 21:04 ` Fabio Baltieri
2012-09-04 20:15 ` [PATCH can-next v6] can: add tx/rx LED trigger support Fabio Baltieri
2012-09-06 10:33 ` Kurt Van Dijck
2012-09-06 11:17 ` Fabio Baltieri
2012-09-06 15:11 ` Kurt Van Dijck
2012-09-06 20:57 ` Fabio Baltieri
2012-09-07 7:04 ` Kurt Van Dijck
2012-09-07 18:59 ` Fabio Baltieri
2012-07-31 8:46 ` [PATCH can-next v3 1/2] " Wolfgang Grandegger
2012-07-31 10:12 ` Marc Kleine-Budde
2012-07-31 11:55 ` Fabio Baltieri
2012-07-31 12:14 ` Fabio Baltieri
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