linux/drivers/leds/leds-gpio-register.c
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  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
  published by the free software foundation

  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
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

43 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2011 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
*/
#include <linux/err.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
/**
* gpio_led_register_device - register a gpio-led device
* @pdata: the platform data used for the new device
*
* Makes a copy of pdata and pdata->leds and registers a new leds-gpio device
* with the result. This allows to have pdata and pdata-leds in .init.rodata
* and so saves some bytes compared to a static struct platform_device with
* static platform data.
*
* Returns the registered device or an error pointer.
*/
struct platform_device *__init gpio_led_register_device(
int id, const struct gpio_led_platform_data *pdata)
{
struct platform_device *ret;
struct gpio_led_platform_data _pdata = *pdata;
if (!pdata->num_leds)
return ERR_PTR(-EINVAL);
_pdata.leds = kmemdup(pdata->leds,
pdata->num_leds * sizeof(*pdata->leds), GFP_KERNEL);
if (!_pdata.leds)
return ERR_PTR(-ENOMEM);
ret = platform_device_register_resndata(NULL, "leds-gpio", id,
NULL, 0, &_pdata, sizeof(_pdata));
if (IS_ERR(ret))
kfree(_pdata.leds);
return ret;
}