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Commit 389623fe authored by Linus Torvalds's avatar Linus Torvalds
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Merge git://git.infradead.org/mtd-2.6 

* git://git.infradead.org/mtd-2.6:
  jffs2: Fix return value from jffs2_do_readpage_nolock()
  mtd: mtdblock: introduce mtdblks_lock
  mtd: remove 'SBC8240 Wind River' Device Driver Code
  mtd: OneNAND: OMAP2/3: free GPMC CS on module removal
  mtd: OneNAND: fix incorrect bufferram offset
  mtd: blkdevs: do not forget to get MTD devices
  mtd: fix the conversion from dev to mtd_info
  mtd: let include/linux/mtd/partitions.h stand on its own
parents 38586120 57ca7deb
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drivers/mtd/maps/Kconfig
View file @ 389623fe
......@@ -284,13 +284,6 @@ config MTD_L440GX
BE VERY CAREFUL.
config MTD_SBC8240
tristate "Flash device on SBC8240"
depends on MTD_JEDECPROBE && 8260
help
Flash access on the SBC8240 board from Wind River. See
<http://www.windriver.com/products/sbc8240/>
config MTD_TQM8XXL
tristate "CFI Flash device mapped on TQM8XXL"
depends on MTD_CFI && TQM8xxL
......
drivers/mtd/maps/Makefile
View file @ 389623fe
......@@ -50,7 +50,6 @@ obj-$(CONFIG_MTD_UCLINUX) += uclinux.o
obj-$(CONFIG_MTD_NETtel) += nettel.o
obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o
obj-$(CONFIG_MTD_H720X) += h720x-flash.o
obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
obj-$(CONFIG_MTD_IXP4XX) += ixp4xx.o
obj-$(CONFIG_MTD_IXP2000) += ixp2000.o
obj-$(CONFIG_MTD_WRSBC8260) += wr_sbc82xx_flash.o
......
drivers/mtd/maps/sbc8240.c
View file @ 389623fe
/*
* Handle mapping of the flash memory access routines on the SBC8240 board.
*
* Carolyn Smith, Tektronix, Inc.
*
* This code is GPLed
*/
/*
* The SBC8240 has 2 flash banks.
* Bank 0 is a 512 KiB AMD AM29F040B; 8 x 64 KiB sectors.
* It contains the U-Boot code (7 sectors) and the environment (1 sector).
* Bank 1 is 4 x 1 MiB AMD AM29LV800BT; 15 x 64 KiB sectors, 1 x 32 KiB sector,
* 2 x 8 KiB sectors, 1 x 16 KiB sectors.
* Both parts are JEDEC compatible.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/cfi.h>
#ifdef CONFIG_MTD_PARTITIONS
#include <linux/mtd/partitions.h>
#endif
#define DEBUG
#ifdef DEBUG
# define debugk(fmt,args...) printk(fmt ,##args)
#else
# define debugk(fmt,args...)
#endif
#define WINDOW_ADDR0 0xFFF00000 /* 512 KiB */
#define WINDOW_SIZE0 0x00080000
#define BUSWIDTH0 1
#define WINDOW_ADDR1 0xFF000000 /* 4 MiB */
#define WINDOW_SIZE1 0x00400000
#define BUSWIDTH1 8
#define MSG_PREFIX "sbc8240:" /* prefix for our printk()'s */
#define MTDID "sbc8240-%d" /* for mtdparts= partitioning */
static struct map_info sbc8240_map[2] = {
{
.name = "sbc8240 Flash Bank #0",
.size = WINDOW_SIZE0,
.bankwidth = BUSWIDTH0,
},
{
.name = "sbc8240 Flash Bank #1",
.size = WINDOW_SIZE1,
.bankwidth = BUSWIDTH1,
}
};
#define NUM_FLASH_BANKS ARRAY_SIZE(sbc8240_map)
/*
* The following defines the partition layout of SBC8240 boards.
*
* See include/linux/mtd/partitions.h for definition of the
* mtd_partition structure.
*
* The *_max_flash_size is the maximum possible mapped flash size
* which is not necessarily the actual flash size. It must correspond
* to the value specified in the mapping definition defined by the
* "struct map_desc *_io_desc" for the corresponding machine.
*/
#ifdef CONFIG_MTD_PARTITIONS
static struct mtd_partition sbc8240_uboot_partitions [] = {
/* Bank 0 */
{
.name = "U-boot", /* U-Boot Firmware */
.offset = 0,
.size = 0x00070000, /* 7 x 64 KiB sectors */
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
{
.name = "environment", /* U-Boot environment */
.offset = 0x00070000,
.size = 0x00010000, /* 1 x 64 KiB sector */
},
};
static struct mtd_partition sbc8240_fs_partitions [] = {
{
.name = "jffs", /* JFFS filesystem */
.offset = 0,
.size = 0x003C0000, /* 4 * 15 * 64KiB */
},
{
.name = "tmp32",
.offset = 0x003C0000,
.size = 0x00020000, /* 4 * 32KiB */
},
{
.name = "tmp8a",
.offset = 0x003E0000,
.size = 0x00008000, /* 4 * 8KiB */
},
{
.name = "tmp8b",
.offset = 0x003E8000,
.size = 0x00008000, /* 4 * 8KiB */
},
{
.name = "tmp16",
.offset = 0x003F0000,
.size = 0x00010000, /* 4 * 16KiB */
}
};
/* trivial struct to describe partition information */
struct mtd_part_def
{
int nums;
unsigned char *type;
struct mtd_partition* mtd_part;
};
static struct mtd_info *sbc8240_mtd[NUM_FLASH_BANKS];
static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
#endif /* CONFIG_MTD_PARTITIONS */
static int __init init_sbc8240_mtd (void)
{
static struct _cjs {
u_long addr;
u_long size;
} pt[NUM_FLASH_BANKS] = {
{
.addr = WINDOW_ADDR0,
.size = WINDOW_SIZE0
},
{
.addr = WINDOW_ADDR1,
.size = WINDOW_SIZE1
},
};
int devicesfound = 0;
int i,j;
for (i = 0; i < NUM_FLASH_BANKS; i++) {
printk (KERN_NOTICE MSG_PREFIX
"Probing 0x%08lx at 0x%08lx\n", pt[i].size, pt[i].addr);
sbc8240_map[i].map_priv_1 =
(unsigned long) ioremap (pt[i].addr, pt[i].size);
if (!sbc8240_map[i].map_priv_1) {
printk (MSG_PREFIX "failed to ioremap\n");
for (j = 0; j < i; j++) {
iounmap((void *) sbc8240_map[j].map_priv_1);
sbc8240_map[j].map_priv_1 = 0;
}
return -EIO;
}
simple_map_init(&sbc8240_mtd[i]);
sbc8240_mtd[i] = do_map_probe("jedec_probe", &sbc8240_map[i]);
if (sbc8240_mtd[i]) {
sbc8240_mtd[i]->module = THIS_MODULE;
devicesfound++;
} else {
if (sbc8240_map[i].map_priv_1) {
iounmap((void *) sbc8240_map[i].map_priv_1);
sbc8240_map[i].map_priv_1 = 0;
}
}
}
if (!devicesfound) {
printk(KERN_NOTICE MSG_PREFIX
"No suppported flash chips found!\n");
return -ENXIO;
}
#ifdef CONFIG_MTD_PARTITIONS
sbc8240_part_banks[0].mtd_part = sbc8240_uboot_partitions;
sbc8240_part_banks[0].type = "static image";
sbc8240_part_banks[0].nums = ARRAY_SIZE(sbc8240_uboot_partitions);
sbc8240_part_banks[1].mtd_part = sbc8240_fs_partitions;
sbc8240_part_banks[1].type = "static file system";
sbc8240_part_banks[1].nums = ARRAY_SIZE(sbc8240_fs_partitions);
for (i = 0; i < NUM_FLASH_BANKS; i++) {
if (!sbc8240_mtd[i]) continue;
if (sbc8240_part_banks[i].nums == 0) {
printk (KERN_NOTICE MSG_PREFIX
"No partition info available, registering whole device\n");
add_mtd_device(sbc8240_mtd[i]);
} else {
printk (KERN_NOTICE MSG_PREFIX
"Using %s partition definition\n", sbc8240_part_banks[i].mtd_part->name);
add_mtd_partitions (sbc8240_mtd[i],
sbc8240_part_banks[i].mtd_part,
sbc8240_part_banks[i].nums);
}
}
#else
printk(KERN_NOTICE MSG_PREFIX
"Registering %d flash banks at once\n", devicesfound);
for (i = 0; i < devicesfound; i++) {
add_mtd_device(sbc8240_mtd[i]);
}
#endif /* CONFIG_MTD_PARTITIONS */
return devicesfound == 0 ? -ENXIO : 0;
}
static void __exit cleanup_sbc8240_mtd (void)
{
int i;
for (i = 0; i < NUM_FLASH_BANKS; i++) {
if (sbc8240_mtd[i]) {
del_mtd_device (sbc8240_mtd[i]);
map_destroy (sbc8240_mtd[i]);
}
if (sbc8240_map[i].map_priv_1) {
iounmap ((void *) sbc8240_map[i].map_priv_1);
sbc8240_map[i].map_priv_1 = 0;
}
}
}
module_init (init_sbc8240_mtd);
module_exit (cleanup_sbc8240_mtd);
MODULE_LICENSE ("GPL");
MODULE_AUTHOR ("Carolyn Smith <carolyn.smith@tektronix.com>");
MODULE_DESCRIPTION ("MTD map driver for SBC8240 boards");
drivers/mtd/mtd_blkdevs.c
View file @ 389623fe
......@@ -144,7 +144,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
struct mtd_blktrans_ops *tr = dev->tr;
int ret = -ENODEV;
if (!try_module_get(dev->mtd->owner))
if (!get_mtd_device(NULL, dev->mtd->index))
goto out;
if (!try_module_get(tr->owner))
......@@ -158,7 +158,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
ret = 0;
if (tr->open && (ret = tr->open(dev))) {
dev->mtd->usecount--;
module_put(dev->mtd->owner);
put_mtd_device(dev->mtd);
out_tr:
module_put(tr->owner);
}
......@@ -177,7 +177,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!ret) {
dev->mtd->usecount--;
module_put(dev->mtd->owner);
put_mtd_device(dev->mtd);
module_put(tr->owner);
}
......
drivers/mtd/mtdblock.c
View file @ 389623fe
......@@ -29,6 +29,8 @@ static struct mtdblk_dev {
enum { STATE_EMPTY, STATE_CLEAN, STATE_DIRTY } cache_state;
} *mtdblks[MAX_MTD_DEVICES];
static struct mutex mtdblks_lock;
/*
* Cache stuff...
*
......@@ -270,15 +272,19 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
DEBUG(MTD_DEBUG_LEVEL1,"mtdblock_open\n");
mutex_lock(&mtdblks_lock);
if (mtdblks[dev]) {
mtdblks[dev]->count++;
mutex_unlock(&mtdblks_lock);
return 0;
}
/* OK, it's not open. Create cache info for it */
mtdblk = kzalloc(sizeof(struct mtdblk_dev), GFP_KERNEL);
if (!mtdblk)
if (!mtdblk) {
mutex_unlock(&mtdblks_lock);
return -ENOMEM;
}
mtdblk->count = 1;
mtdblk->mtd = mtd;
......@@ -291,6 +297,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
}
mtdblks[dev] = mtdblk;
mutex_unlock(&mtdblks_lock);
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
......@@ -304,6 +311,8 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
DEBUG(MTD_DEBUG_LEVEL1, "mtdblock_release\n");
mutex_lock(&mtdblks_lock);
mutex_lock(&mtdblk->cache_mutex);
write_cached_data(mtdblk);
mutex_unlock(&mtdblk->cache_mutex);
......@@ -316,6 +325,9 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
vfree(mtdblk->cache_data);
kfree(mtdblk);
}
mutex_unlock(&mtdblks_lock);
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
......@@ -376,6 +388,8 @@ static struct mtd_blktrans_ops mtdblock_tr = {
static int __init init_mtdblock(void)
{
mutex_init(&mtdblks_lock);
return register_mtd_blktrans(&mtdblock_tr);
}
......
drivers/mtd/mtdcore.c
View file @ 389623fe
......@@ -66,7 +66,7 @@ static int mtd_cls_suspend(struct device *dev, pm_message_t state)
{
struct mtd_info *mtd = dev_to_mtd(dev);
if (mtd->suspend)
if (mtd && mtd->suspend)
return mtd->suspend(mtd);
else
return 0;
......@@ -76,7 +76,7 @@ static int mtd_cls_resume(struct device *dev)
{
struct mtd_info *mtd = dev_to_mtd(dev);
if (mtd->resume)
if (mtd && mtd->resume)
mtd->resume(mtd);
return 0;
}
......@@ -298,6 +298,7 @@ int add_mtd_device(struct mtd_info *mtd)
mtd->dev.class = &mtd_class;
mtd->dev.devt = MTD_DEVT(i);
dev_set_name(&mtd->dev, "mtd%d", i);
dev_set_drvdata(&mtd->dev, mtd);
if (device_register(&mtd->dev) != 0) {
mtd_table[i] = NULL;
break;
......
drivers/mtd/onenand/omap2.c
View file @ 389623fe
......@@ -266,7 +266,7 @@ static inline int omap2_onenand_bufferram_offset(struct mtd_info *mtd, int area)
if (ONENAND_CURRENT_BUFFERRAM(this)) {
if (area == ONENAND_DATARAM)
return mtd->writesize;
return this->writesize;
if (area == ONENAND_SPARERAM)
return mtd->oobsize;
}
......@@ -770,6 +770,7 @@ static int __devexit omap2_onenand_remove(struct platform_device *pdev)
}
iounmap(c->onenand.base);
release_mem_region(c->phys_base, ONENAND_IO_SIZE);
gpmc_cs_free(c->gpmc_cs);
kfree(c);
return 0;
......
fs/jffs2/file.c
View file @ 389623fe
......@@ -99,7 +99,7 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)
kunmap(pg);
D2(printk(KERN_DEBUG "readpage finished\n"));
return 0;
return ret;
}
int jffs2_do_readpage_unlock(struct inode *inode, struct page *pg)
......
include/linux/mtd/mtd.h
View file @ 389623fe
......@@ -251,7 +251,7 @@ struct mtd_info {
static inline struct mtd_info *dev_to_mtd(struct device *dev)
{
return dev ? container_of(dev, struct mtd_info, dev) : NULL;
return dev ? dev_get_drvdata(dev) : NULL;
}
static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
......
include/linux/mtd/partitions.h
View file @ 389623fe
......@@ -47,6 +47,8 @@ struct mtd_partition {
#define MTDPART_SIZ_FULL (0)
struct mtd_info;
int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
......
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