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mtd: nand: kill member `ops' of `struct nand_chip' 

The nand_chip.ops field is a struct that is passed around globally with
no particular reason. Every time it is used, it could just as easily be
replaced with a local struct that is updated on each operation. So make
it local.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
This commit is contained in:
Brian Norris 2011-08-30 18:45:45 -07:00 committed by Artem Bityutskiy
parent 4180f24a7b
commit 4a89ff885f
2 changed files with 25 additions and 24 deletions
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46
drivers/mtd/nand/nand_base.c
View File

@ -406,6 +406,8 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
if (chip->bbt_options & NAND_BBT_USE_FLASH)
ret = nand_update_bbt(mtd, ofs);
else {
struct mtd_oob_ops ops;
nand_get_device(chip, mtd, FL_WRITING);
/*
@ -414,13 +416,12 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
* procedure. We write two bytes per location, so we dont have
* to mess with 16 bit access.
*/
ops.len = ops.ooblen = 2;
ops.datbuf = NULL;
ops.oobbuf = buf;
ops.ooboffs = chip->badblockpos & ~0x01;
do {
chip->ops.len = chip->ops.ooblen = 2;
chip->ops.datbuf = NULL;
chip->ops.oobbuf = buf;
chip->ops.ooboffs = chip->badblockpos & ~0x01;
ret = nand_do_write_oob(mtd, ofs, &chip->ops);
ret = nand_do_write_oob(mtd, ofs, &ops);
i++;
ofs += mtd->writesize;
@ -1573,6 +1574,7 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, uint8_t *buf)
{
struct nand_chip *chip = mtd->priv;
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
@ -1583,13 +1585,13 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
nand_get_device(chip, mtd, FL_READING);
chip->ops.len = len;
chip->ops.datbuf = buf;
chip->ops.oobbuf = NULL;
ops.len = len;
ops.datbuf = buf;
ops.oobbuf = NULL;
ret = nand_do_read_ops(mtd, from, &chip->ops);
ret = nand_do_read_ops(mtd, from, &ops);
*retlen = chip->ops.retlen;
*retlen = ops.retlen;
nand_release_device(mtd);
@ -2278,6 +2280,7 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const uint8_t *buf)
{
struct nand_chip *chip = mtd->priv;
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
@ -2292,13 +2295,13 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
/* Grab the device */
panic_nand_get_device(chip, mtd, FL_WRITING);
chip->ops.len = len;
chip->ops.datbuf = (uint8_t *)buf;
chip->ops.oobbuf = NULL;
ops.len = len;
ops.datbuf = (uint8_t *)buf;
ops.oobbuf = NULL;
ret = nand_do_write_ops(mtd, to, &chip->ops);
ret = nand_do_write_ops(mtd, to, &ops);
*retlen = chip->ops.retlen;
*retlen = ops.retlen;
return ret;
}
@ -2316,6 +2319,7 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const uint8_t *buf)
{
struct nand_chip *chip = mtd->priv;
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
@ -2326,13 +2330,13 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
nand_get_device(chip, mtd, FL_WRITING);
chip->ops.len = len;
chip->ops.datbuf = (uint8_t *)buf;
chip->ops.oobbuf = NULL;
ops.len = len;
ops.datbuf = (uint8_t *)buf;
ops.oobbuf = NULL;
ret = nand_do_write_ops(mtd, to, &chip->ops);
ret = nand_do_write_ops(mtd, to, &ops);
*retlen = chip->ops.retlen;
*retlen = ops.retlen;
nand_release_device(mtd);

3
include/linux/mtd/nand.h
View File

@ -427,7 +427,6 @@ struct nand_buffers {
* @ecc: [BOARDSPECIFIC] ECC control structure
* @buffers: buffer structure for read/write
* @hwcontrol: platform-specific hardware control structure
* @ops: oob operation operands
* @erase_cmd: [INTERN] erase command write function, selectable due
* to AND support.
* @scan_bbt: [REPLACEABLE] function to scan bad block table
@ -535,8 +534,6 @@ struct nand_chip {
struct nand_buffers *buffers;
struct nand_hw_control hwcontrol;
struct mtd_oob_ops ops;
uint8_t *bbt;
struct nand_bbt_descr *bbt_td;
struct nand_bbt_descr *bbt_md;