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[MTD] remove unused ecctype,eccsize fields from struct mtd_info 

Remove unused and broken mtd->ecctype and mtd->eccsize fields
from struct mtd_info. Do not remove them from userspace API
data structures (don't want to breake userspace) but mark them
as obsolete by a comment. Any userspace program which uses them
should be half-broken anyway, so this is more about saving
data structure size.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Artem Bityutskiy 2007-01-30 10:50:43 +02:00 committed by David Woodhouse
parent d416085572
commit 64f6071056
10 changed files with 5 additions and 21 deletions
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1
drivers/mtd/devices/doc2000.c
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@ -569,7 +569,6 @@ void DoC2k_init(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->ecctype = MTD_ECC_RS_DiskOnChip;
mtd->size = 0;
mtd->erasesize = 0;
mtd->writesize = 512;

1
drivers/mtd/devices/doc2001.c
View File

@ -349,7 +349,6 @@ void DoCMil_init(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->ecctype = MTD_ECC_RS_DiskOnChip;
mtd->size = 0;
/* FIXME: erase size is not always 8KiB */

1
drivers/mtd/devices/doc2001plus.c
View File

@ -473,7 +473,6 @@ void DoCMilPlus_init(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->ecctype = MTD_ECC_RS_DiskOnChip;
mtd->size = 0;
mtd->erasesize = 0;

5
drivers/mtd/mtdchar.c
View File

@ -419,8 +419,9 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
info.erasesize = mtd->erasesize;
info.writesize = mtd->writesize;
info.oobsize = mtd->oobsize;
info.ecctype = mtd->ecctype;
info.eccsize = mtd->eccsize;
/* The below fields are obsolete */
info.ecctype = -1;
info.eccsize = 0;
if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
return -EFAULT;
break;

4
drivers/mtd/mtdconcat.c
View File

@ -727,8 +727,6 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c
concat->mtd.erasesize = subdev[0]->erasesize;
concat->mtd.writesize = subdev[0]->writesize;
concat->mtd.oobsize = subdev[0]->oobsize;
concat->mtd.ecctype = subdev[0]->ecctype;
concat->mtd.eccsize = subdev[0]->eccsize;
if (subdev[0]->writev)
concat->mtd.writev = concat_writev;
if (subdev[0]->read_oob)
@ -774,8 +772,6 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c
if (concat->mtd.writesize != subdev[i]->writesize ||
concat->mtd.subpage_sft != subdev[i]->subpage_sft ||
concat->mtd.oobsize != subdev[i]->oobsize ||
concat->mtd.ecctype != subdev[i]->ecctype ||
concat->mtd.eccsize != subdev[i]->eccsize ||
!concat->mtd.read_oob != !subdev[i]->read_oob ||
!concat->mtd.write_oob != !subdev[i]->write_oob) {
kfree(concat);

2
drivers/mtd/mtdpart.c
View File

@ -338,8 +338,6 @@ int add_mtd_partitions(struct mtd_info *master,
slave->mtd.size = parts[i].size;
slave->mtd.writesize = master->writesize;
slave->mtd.oobsize = master->oobsize;
slave->mtd.ecctype = master->ecctype;
slave->mtd.eccsize = master->eccsize;
slave->mtd.subpage_sft = master->subpage_sft;
slave->mtd.name = parts[i].name;

1
drivers/mtd/nand/nand_base.c
View File

@ -2566,7 +2566,6 @@ int nand_scan_tail(struct mtd_info *mtd)
/* Fill in remaining MTD driver data */
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->ecctype = MTD_ECC_SW;
mtd->erase = nand_erase;
mtd->point = NULL;
mtd->unpoint = NULL;

1
drivers/mtd/onenand/onenand_base.c
View File

@ -2373,7 +2373,6 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
/* Fill in remaining MTD driver data */
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->ecctype = MTD_ECC_SW;
mtd->erase = onenand_erase;
mtd->point = NULL;
mtd->unpoint = NULL;

2
include/linux/mtd/mtd.h
View File

@ -117,8 +117,6 @@ struct mtd_info {
u_int32_t writesize;
u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
u_int32_t ecctype;
u_int32_t eccsize;
// Kernel-only stuff starts here.
char *name;

8
include/mtd/mtd-abi.h
View File

@ -36,12 +36,6 @@ struct mtd_oob_buf {
#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
#define MTD_CAP_NANDFLASH (MTD_WRITEABLE)
// Types of automatic ECC/Checksum available
#define MTD_ECC_NONE 0 // No automatic ECC available
#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
/* ECC byte placement */
#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
@ -61,6 +55,8 @@ struct mtd_info_user {
uint32_t erasesize;
uint32_t writesize;
uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
/* The below two fields are obsolete and broken, do not use them
* (TODO: remove at some point) */
uint32_t ecctype;
uint32_t eccsize;
};