forked from Minki/linux
25f0c659fe
ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Tested (compilation only) with: - allmodconfig - Modifying drivers/mtd/maps/Kconfig and drivers/mtd/nand/Kconfig to make sure that the changed file is compiling without warning Signed-off-by: Amol Lad <amol@verismonetworks.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/*
|
|
* $Id: beech-mtd.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $
|
|
*
|
|
* drivers/mtd/maps/beech-mtd.c MTD mappings and partition tables for
|
|
* IBM 405LP Beech boards.
|
|
*
|
|
* 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
|
|
*
|
|
* Copyright (C) 2002, International Business Machines Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* Bishop Brock
|
|
* IBM Research, Austin Center for Low-Power Computing
|
|
* bcbrock@us.ibm.com
|
|
* March 2002
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/ibm4xx.h>
|
|
|
|
#define NAME "Beech Linux Flash"
|
|
#define PADDR BEECH_BIGFLASH_PADDR
|
|
#define SIZE BEECH_BIGFLASH_SIZE
|
|
#define BUSWIDTH 1
|
|
|
|
/* Flash memories on these boards are memory resources, accessed big-endian. */
|
|
|
|
|
|
static struct map_info beech_mtd_map = {
|
|
.name = NAME,
|
|
.size = SIZE,
|
|
.bankwidth = BUSWIDTH,
|
|
.phys = PADDR
|
|
};
|
|
|
|
static struct mtd_info *beech_mtd;
|
|
|
|
static struct mtd_partition beech_partitions[2] = {
|
|
{
|
|
.name = "Linux Kernel",
|
|
.size = BEECH_KERNEL_SIZE,
|
|
.offset = BEECH_KERNEL_OFFSET
|
|
}, {
|
|
.name = "Free Area",
|
|
.size = BEECH_FREE_AREA_SIZE,
|
|
.offset = BEECH_FREE_AREA_OFFSET
|
|
}
|
|
};
|
|
|
|
static int __init
|
|
init_beech_mtd(void)
|
|
{
|
|
int err = 0;
|
|
|
|
printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
|
|
|
|
beech_mtd_map.virt = ioremap(PADDR, SIZE);
|
|
|
|
if (!beech_mtd_map.virt) {
|
|
printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
|
|
return -EIO;
|
|
}
|
|
|
|
simple_map_init(&beech_mtd_map);
|
|
|
|
printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
|
|
beech_mtd = do_map_probe("cfi_probe", &beech_mtd_map);
|
|
|
|
if (!beech_mtd) {
|
|
iounmap((void *) beech_mtd_map.virt);
|
|
return -ENXIO;
|
|
}
|
|
|
|
beech_mtd->owner = THIS_MODULE;
|
|
|
|
err = add_mtd_partitions(beech_mtd, beech_partitions, 2);
|
|
if (err) {
|
|
printk("%s: add_mtd_partitions failed\n", NAME);
|
|
iounmap((void *) beech_mtd_map.virt);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit
|
|
cleanup_beech_mtd(void)
|
|
{
|
|
if (beech_mtd) {
|
|
del_mtd_partitions(beech_mtd);
|
|
map_destroy(beech_mtd);
|
|
iounmap((void *) beech_mtd_map.virt);
|
|
}
|
|
}
|
|
|
|
module_init(init_beech_mtd);
|
|
module_exit(cleanup_beech_mtd);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Bishop Brock <bcbrock@us.ibm.com>");
|
|
MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Beech boards");
|