linux-imx

/*

 * Copyright (c) International Business Machines Corp., 2006

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See

 * the GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 *

 * Author: Artem Bityutskiy (Битюцкий Артём)

 */

​

/* This file mostly implements UBI kernel API functions */

​

#include <linux/module.h>

#include <linux/err.h>

#include <linux/slab.h>

#include <linux/namei.h>

#include <linux/fs.h>

#include <asm/div64.h>

#include "ubi.h"

​

/**

 * ubi_do_get_device_info - get information about UBI device.

 * @ubi: UBI device description object

 * @di: the information is stored here

 *

 * This function is the same as 'ubi_get_device_info()', but it assumes the UBI

 * device is locked and cannot disappear.

 */

void ubi_do_get_device_info(struct ubi_device *ubi, struct ubi_device_info *di)

{

    di->ubi_num = ubi->ubi_num;

    di->leb_size = ubi->leb_size;

    di->leb_start = ubi->leb_start;

    di->min_io_size = ubi->min_io_size;

    di->max_write_size = ubi->max_write_size;

    di->ro_mode = ubi->ro_mode;

    di->cdev = ubi->cdev.dev;

}

EXPORT_SYMBOL_GPL(ubi_do_get_device_info);

​

/**

 * ubi_get_device_info - get information about UBI device.

 * @ubi_num: UBI device number

 * @di: the information is stored here

 *

 * This function returns %0 in case of success, %-EINVAL if the UBI device

 * number is invalid, and %-ENODEV if there is no such UBI device.

 */

int ubi_get_device_info(int ubi_num, struct ubi_device_info *di)

{

    struct ubi_device *ubi;

​

    if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES)