cregit-Linux how code gets into the kernel

Release 4.14 drivers/leds/leds-gpio-register.c

Directory: drivers/leds
/*
 * Copyright (C) 2011 Pengutronix
 * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
 *
 * 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.
 */
#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; }

Contributors

PersonTokensPropCommitsCommitProp
Uwe Kleine-König10888.52%150.00%
Xiubo Li1411.48%150.00%
Total122100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Uwe Kleine-König11987.50%133.33%
Xiubo Li1712.50%266.67%
Total136100.00%3100.00%
Directory: drivers/leds
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