forked from Minki/linux
d2912cb15b
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>
43 lines
1.2 KiB
C
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;
|
|
}
|