Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Woodhouse |
139 |
44.27% |
3 |
15.79% |
| Al Viro |
63 |
20.06% |
2 |
10.53% |
| Linus Torvalds |
63 |
20.06% |
2 |
10.53% |
| Ezequiel García |
24 |
7.64% |
3 |
15.79% |
| Maxim Levitsky |
7 |
2.23% |
1 |
5.26% |
| Richard Purdie |
5 |
1.59% |
1 |
5.26% |
| Dave Jones |
3 |
0.96% |
1 |
5.26% |
| Paul Gortmaker |
3 |
0.96% |
1 |
5.26% |
| Thomas Gleixner |
2 |
0.64% |
1 |
5.26% |
| Artem B. Bityutskiy |
2 |
0.64% |
2 |
10.53% |
| Dejin Zheng |
2 |
0.64% |
1 |
5.26% |
| Burman Yan |
1 |
0.32% |
1 |
5.26% |
| Total |
314 |
|
19 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Simple read-only (writable only for RAM) mtdblock driver
*
* Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/blktrans.h>
#include <linux/module.h>
#include <linux/major.h>
static int mtdblock_readsect(struct mtd_blktrans_dev *dev,
unsigned long block, char *buf)
{
size_t retlen;
if (mtd_read(dev->mtd, (block * 512), 512, &retlen, buf))
return 1;
return 0;
}
static int mtdblock_writesect(struct mtd_blktrans_dev *dev,
unsigned long block, char *buf)
{
size_t retlen;
if (mtd_write(dev->mtd, (block * 512), 512, &retlen, buf))
return 1;
return 0;
}
static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
{
struct mtd_blktrans_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return;
dev->mtd = mtd;
dev->devnum = mtd->index;
dev->size = mtd->size >> 9;
dev->tr = tr;
dev->readonly = 1;
if (mtd_type_is_nand(mtd))
pr_warn("%s: MTD device '%s' is NAND, please consider using UBI block devices instead.\n",
tr->name, mtd->name);
if (add_mtd_blktrans_dev(dev))
kfree(dev);
}
static void mtdblock_remove_dev(struct mtd_blktrans_dev *dev)
{
del_mtd_blktrans_dev(dev);
}
static struct mtd_blktrans_ops mtdblock_tr = {
.name = "mtdblock",
.major = MTD_BLOCK_MAJOR,
.part_bits = 0,
.blksize = 512,
.readsect = mtdblock_readsect,
.writesect = mtdblock_writesect,
.add_mtd = mtdblock_add_mtd,
.remove_dev = mtdblock_remove_dev,
.owner = THIS_MODULE,
};
module_mtd_blktrans(mtdblock_tr);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("Simple read-only block device emulation access to MTD devices");