From: Fabio Baltieri <fabio.baltieri@gmail.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: linux-can@vger.kernel.org, linux-kernel@vger.kernel.org,
Oliver Hartkopp <socketcan@hartkopp.net>,
Wolfgang Grandegger <wg@grandegger.com>
Subject: Re: [PATCH can-next v3 1/2] can: add tx/rx LED trigger support
Date: Tue, 31 Jul 2012 13:57:33 +0200 [thread overview]
Message-ID: <20120731115733.GB30417@gmail.com> (raw)
In-Reply-To: <501784C8.9050803@pengutronix.de>
On Tue, Jul 31, 2012 at 09:10:00AM +0200, Marc Kleine-Budde wrote:
> >>> +/*
> >>> + * Register CAN LED triggers for a CAN device
> >>> + *
> >>> + * This is normally called from a driver's probe function
> >>> + */
> >>> +void can_led_init(struct net_device *netdev)
> >>> +{
> >>> + struct can_priv *priv = netdev_priv(netdev);
> >>> +
> >>> + priv->tx_led_trig_name = kasprintf(GFP_KERNEL, "%s-tx", netdev->name);
> >>> + if (!priv->tx_led_trig_name)
> >>> + goto tx_led_failed;
> >>> +
> >>> + priv->rx_led_trig_name = kasprintf(GFP_KERNEL, "%s-rx", netdev->name);
> >>> + if (!priv->rx_led_trig_name)
> >>> + goto rx_led_failed;
> >>> +
> >>> + led_trigger_register_simple(priv->tx_led_trig_name,
> >>> + &priv->tx_led_trig);
> >>> + led_trigger_register_simple(priv->rx_led_trig_name,
> >>> + &priv->rx_led_trig);
> >>> +
> >>> + return;
> >>> +
> >>> +rx_led_failed:
> >>> + kfree(priv->tx_led_trig_name);
> >>> + priv->tx_led_trig_name = NULL;
> >>> +tx_led_failed:
> >>> + return;
> >>> +}
> >>> +EXPORT_SYMBOL_GPL(can_led_init);
> >>
> >> Can you provide a devm implementation for can_led?
> >
> > Sounds reasonable, you mean like a devm_kasprintf implementation to
> > remove kfree and unwinding code?
>
> IMHO it would be sufficient if you implement the devm cleanup functions
> here.
Uh - can you be more specific? I mean, are you suggesting to just
convert the code to something like:
unsigned int len;
char *p;
len = snprintf(NULL, 0, "%s-tx", netdev->name);
p = devm_kzalloc(&netdev->dev, len + 1, GFP_KERNEL);
if (!p)
return -ENOMEM;
sprintf(p, len + 1, "%s-tx", netdev->name);
or to implement something with devres_alloc() and a specific
release function?
Fabio
next prev parent reply other threads:[~2012-07-31 11:55 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 [this message]
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
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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