mips: Use HAVE_MEMBLOCK_NODE_MAP
[linux-2.6.git] / drivers / leds / leds-gpio-register.c
blob1c4ed5510f356a1be0ae7782d8600198b91e6e78
1 /*
2 * Copyright (C) 2011 Pengutronix
3 * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
5 * This program is free software; you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License version 2 as published by the
7 * Free Software Foundation.
8 */
9 #include <linux/err.h>
10 #include <linux/platform_device.h>
11 #include <linux/slab.h>
12 #include <linux/leds.h>
14 /**
15 * gpio_led_register_device - register a gpio-led device
16 * @pdata: the platform data used for the new device
18 * Makes a copy of pdata and pdata->leds and registers a new leds-gpio device
19 * with the result. This allows to have pdata and pdata-leds in .init.rodata
20 * and so saves some bytes compared to a static struct platform_device with
21 * static platform data.
23 * Returns the registered device or an error pointer.
25 struct platform_device *__init gpio_led_register_device(
26 int id, const struct gpio_led_platform_data *pdata)
28 struct platform_device *ret;
29 struct gpio_led_platform_data _pdata = *pdata;
31 _pdata.leds = kmemdup(pdata->leds,
32 pdata->num_leds * sizeof(*pdata->leds), GFP_KERNEL);
33 if (!_pdata.leds)
34 return ERR_PTR(-ENOMEM);
36 ret = platform_device_register_resndata(NULL, "leds-gpio", id,
37 NULL, 0, &_pdata, sizeof(_pdata));
38 if (IS_ERR(ret))
39 kfree(_pdata.leds);
41 return ret;