linux/drivers/usb/common/led.c
Greg Kroah-Hartman 366122afb8 USB: common: Remove redundant license text
Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Peter Chen <Peter.Chen@nxp.com>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04 11:55:39 +01:00

54 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* LED Triggers for USB Activity
*
* Copyright 2014 Michal Sojka <sojka@merica.cz>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/leds.h>
#include <linux/usb.h>
#define BLINK_DELAY 30
static unsigned long usb_blink_delay = BLINK_DELAY;
DEFINE_LED_TRIGGER(ledtrig_usb_gadget);
DEFINE_LED_TRIGGER(ledtrig_usb_host);
void usb_led_activity(enum usb_led_event ev)
{
struct led_trigger *trig = NULL;
switch (ev) {
case USB_LED_EVENT_GADGET:
trig = ledtrig_usb_gadget;
break;
case USB_LED_EVENT_HOST:
trig = ledtrig_usb_host;
break;
}
/* led_trigger_blink_oneshot() handles trig == NULL gracefully */
led_trigger_blink_oneshot(trig, &usb_blink_delay, &usb_blink_delay, 0);
}
EXPORT_SYMBOL_GPL(usb_led_activity);
static int __init ledtrig_usb_init(void)
{
led_trigger_register_simple("usb-gadget", &ledtrig_usb_gadget);
led_trigger_register_simple("usb-host", &ledtrig_usb_host);
return 0;
}
static void __exit ledtrig_usb_exit(void)
{
led_trigger_unregister_simple(ledtrig_usb_gadget);
led_trigger_unregister_simple(ledtrig_usb_host);
}
module_init(ledtrig_usb_init);
module_exit(ledtrig_usb_exit);