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Subject[PATCH v3 2/3] can: simplify LED trigger handling
Date
The new function led_trigger_register_format allows one to simplify LED
trigger handling considerably.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/net/can/led.c | 30 +++++++-----------------------
include/linux/can/dev.h | 3 ---
2 files changed, 7 insertions(+), 26 deletions(-)

diff --git a/drivers/net/can/led.c b/drivers/net/can/led.c
index 2d7d1b0d20f9..111f9769e9da 100644
--- a/drivers/net/can/led.c
+++ b/drivers/net/can/led.c
@@ -81,19 +81,9 @@ void devm_can_led_init(struct net_device *netdev)
return;
}

- snprintf(priv->tx_led_trig_name, sizeof(priv->tx_led_trig_name),
- "%s-tx", netdev->name);
- snprintf(priv->rx_led_trig_name, sizeof(priv->rx_led_trig_name),
- "%s-rx", netdev->name);
- snprintf(priv->rxtx_led_trig_name, sizeof(priv->rxtx_led_trig_name),
- "%s-rxtx", netdev->name);
-
- 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);
- led_trigger_register_simple(priv->rxtx_led_trig_name,
- &priv->rxtx_led_trig);
+ led_trigger_register_format(&priv->tx_led_trig, "%s-tx", netdev->name);
+ led_trigger_register_format(&priv->rx_led_trig, "%s-rx", netdev->name);
+ led_trigger_register_format(&priv->rxtx_led_trig, "%s-rxtx", netdev->name);

devres_add(&netdev->dev, res);
}
@@ -105,23 +95,17 @@ static int can_led_notifier(struct notifier_block *nb, unsigned long msg,
{
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
struct can_priv *priv = safe_candev_priv(netdev);
- char name[CAN_LED_NAME_SZ];

if (!priv)
return NOTIFY_DONE;

- if (!priv->tx_led_trig || !priv->rx_led_trig || !priv->rxtx_led_trig)
- return NOTIFY_DONE;
-
if (msg == NETDEV_CHANGENAME) {
- snprintf(name, sizeof(name), "%s-tx", netdev->name);
- led_trigger_rename(priv->tx_led_trig, name);
+ led_trigger_rename(priv->tx_led_trig, "%s-tx", netdev->name);

- snprintf(name, sizeof(name), "%s-rx", netdev->name);
- led_trigger_rename(priv->rx_led_trig, name);
+ led_trigger_rename(priv->rx_led_trig, "%s-rx", netdev->name);

- snprintf(name, sizeof(name), "%s-rxtx", netdev->name);
- led_trigger_rename(priv->rxtx_led_trig, name);
+ led_trigger_rename(priv->rxtx_led_trig,
+ "%s-rxtx", netdev->name);
}

return NOTIFY_DONE;
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 055aaf5ed9af..ff358269aa9c 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -73,11 +73,8 @@ struct can_priv {

#ifdef CONFIG_CAN_LEDS
struct led_trigger *tx_led_trig;
- char tx_led_trig_name[CAN_LED_NAME_SZ];
struct led_trigger *rx_led_trig;
- char rx_led_trig_name[CAN_LED_NAME_SZ];
struct led_trigger *rxtx_led_trig;
- char rxtx_led_trig_name[CAN_LED_NAME_SZ];
#endif
};

--
2.17.0
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