a1ef7bd9fc
The LED trigger name for CAN devices is based on the initial CAN device name, but does never change. The LED trigger name is not guaranteed to be unique in case of hotplugging CAN devices. This patch tries to address this problem by modifying the LED trigger name according to the CAN device name when the latter changes. v1 - Kurt Van Dijck v2 - Fabio Baltieri - remove rename blocking if trigger is bound - use led-subsystem function for the actual rename (still WiP) - call init/exit functions from dev.c v3 - Kurt Van Dijck - safe operation for non-candev based devices (vcan, slcan) based on earlier patch v4 - Kurt Van Dijck - trivial patch mistakes fixed Signed-off-by: Kurt Van Dijck <kurt.van.dijck@eia.be> Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef CAN_LED_H
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#define CAN_LED_H
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#include <linux/if.h>
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#include <linux/leds.h>
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enum can_led_event {
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CAN_LED_EVENT_OPEN,
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CAN_LED_EVENT_STOP,
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CAN_LED_EVENT_TX,
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CAN_LED_EVENT_RX,
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};
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#ifdef CONFIG_CAN_LEDS
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/* keep space for interface name + "-tx"/"-rx" suffix and null terminator */
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#define CAN_LED_NAME_SZ (IFNAMSIZ + 4)
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void can_led_event(struct net_device *netdev, enum can_led_event event);
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void devm_can_led_init(struct net_device *netdev);
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int __init can_led_notifier_init(void);
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void __exit can_led_notifier_exit(void);
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#else
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static inline void can_led_event(struct net_device *netdev,
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enum can_led_event event)
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{
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}
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static inline void devm_can_led_init(struct net_device *netdev)
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{
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}
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static inline int can_led_notifier_init(void)
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{
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return 0;
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}
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static inline void can_led_notifier_exit(void)
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{
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}
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#endif
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#endif
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