[PATCH v2 06/25] mtd: nand: make use of mtd_to_nand() in NAND core code

From: Boris Brezillon
Date: Tue Dec 01 2015 - 06:10:06 EST

mtd_to_nand() was recently introduced to avoid direct access to the
mtd->priv field. Update core code to use mtd_to_nand().

Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/nand_base.c | 84 ++++++++++++++++++++++----------------------
drivers/mtd/nand/nand_bbt.c | 32 ++++++++---------
drivers/mtd/nand/nand_bch.c | 4 +--
drivers/mtd/nand/nand_ecc.c | 4 +--
drivers/mtd/nand/nandsim.c | 18 +++++-----
5 files changed, 71 insertions(+), 71 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0748a13..5aec154 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -106,7 +106,7 @@ DEFINE_LED_TRIGGER(nand_led_trigger);
static int check_offs_len(struct mtd_info *mtd,
loff_t ofs, uint64_t len)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
int ret = 0;

/* Start address must align on block boundary */
@@ -132,7 +132,7 @@ static int check_offs_len(struct mtd_info *mtd,
*/
static void nand_release_device(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

/* Release the controller and the chip */
spin_lock(&chip->controller->lock);
@@ -150,7 +150,7 @@ static void nand_release_device(struct mtd_info *mtd)
*/
static uint8_t nand_read_byte(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
return readb(chip->IO_ADDR_R);
}

@@ -163,7 +163,7 @@ static uint8_t nand_read_byte(struct mtd_info *mtd)
*/
static uint8_t nand_read_byte16(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
return (uint8_t) cpu_to_le16(readw(chip->IO_ADDR_R));
}

@@ -175,7 +175,7 @@ static uint8_t nand_read_byte16(struct mtd_info *mtd)
*/
static u16 nand_read_word(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
return readw(chip->IO_ADDR_R);
}

@@ -188,7 +188,7 @@ static u16 nand_read_word(struct mtd_info *mtd)
*/
static void nand_select_chip(struct mtd_info *mtd, int chipnr)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

switch (chipnr) {
case -1:
@@ -211,7 +211,7 @@ static void nand_select_chip(struct mtd_info *mtd, int chipnr)
*/
static void nand_write_byte(struct mtd_info *mtd, uint8_t byte)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

chip->write_buf(mtd, &byte, 1);
}
@@ -225,7 +225,7 @@ static void nand_write_byte(struct mtd_info *mtd, uint8_t byte)
*/
static void nand_write_byte16(struct mtd_info *mtd, uint8_t byte)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
uint16_t word = byte;

/*
@@ -257,7 +257,7 @@ static void nand_write_byte16(struct mtd_info *mtd, uint8_t byte)
*/
static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

iowrite8_rep(chip->IO_ADDR_W, buf, len);
}
@@ -272,7 +272,7 @@ static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
*/
static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

ioread8_rep(chip->IO_ADDR_R, buf, len);
}
@@ -287,7 +287,7 @@ static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
*/
static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
u16 *p = (u16 *) buf;

iowrite16_rep(chip->IO_ADDR_W, p, len >> 1);
@@ -303,7 +303,7 @@ static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
*/
static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
u16 *p = (u16 *) buf;

ioread16_rep(chip->IO_ADDR_R, p, len >> 1);
@@ -320,7 +320,7 @@ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
{
int page, chipnr, res = 0, i = 0;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
u16 bad;

if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
@@ -380,7 +380,7 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
*/
static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct mtd_oob_ops ops;
uint8_t buf[2] = { 0, 0 };
int ret = 0, res, i = 0;
@@ -430,7 +430,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
*/
static int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
int res, ret = 0;

if (!(chip->bbt_options & NAND_BBT_NO_OOB_BBM)) {
@@ -471,7 +471,7 @@ static int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs)
*/
static int nand_check_wp(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

/* Broken xD cards report WP despite being writable */
if (chip->options & NAND_BROKEN_XD)
@@ -491,7 +491,7 @@ static int nand_check_wp(struct mtd_info *mtd)
*/
static int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

if (!chip->bbt)
return 0;
@@ -512,7 +512,7 @@ static int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs)
static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
int allowbbt)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

if (!chip->bbt)
return chip->block_bad(mtd, ofs, getchip);
@@ -531,7 +531,7 @@ static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
*/
static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
int i;

/* Wait for the device to get ready */
@@ -551,7 +551,7 @@ static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo)
*/
void nand_wait_ready(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
unsigned long timeo = 400;

if (in_interrupt() || oops_in_progress)
@@ -582,7 +582,7 @@ EXPORT_SYMBOL_GPL(nand_wait_ready);
*/
static void nand_wait_status_ready(struct mtd_info *mtd, unsigned long timeo)
{
- register struct nand_chip *chip = mtd->priv;
+ register struct nand_chip *chip = mtd_to_nand(mtd);

timeo = jiffies + msecs_to_jiffies(timeo);
do {
@@ -605,7 +605,7 @@ static void nand_wait_status_ready(struct mtd_info *mtd, unsigned long timeo)
static void nand_command(struct mtd_info *mtd, unsigned int command,
int column, int page_addr)
{
- register struct nand_chip *chip = mtd->priv;
+ register struct nand_chip *chip = mtd_to_nand(mtd);
int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE;

/* Write out the command to the device */
@@ -708,7 +708,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,
static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
int column, int page_addr)
{
- register struct nand_chip *chip = mtd->priv;
+ register struct nand_chip *chip = mtd_to_nand(mtd);

/* Emulate NAND_CMD_READOOB */
if (command == NAND_CMD_READOOB) {
@@ -832,7 +832,7 @@ static void panic_nand_get_device(struct nand_chip *chip,
static int
nand_get_device(struct mtd_info *mtd, int new_state)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
spinlock_t *lock = &chip->controller->lock;
wait_queue_head_t *wq = &chip->controller->wq;
DECLARE_WAITQUEUE(wait, current);
@@ -952,7 +952,7 @@ static int __nand_unlock(struct mtd_info *mtd, loff_t ofs,
{
int ret = 0;
int status, page;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

/* Submit address of first page to unlock */
page = ofs >> chip->page_shift;
@@ -987,7 +987,7 @@ int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
int ret = 0;
int chipnr;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

pr_debug("%s: start = 0x%012llx, len = %llu\n",
__func__, (unsigned long long)ofs, len);
@@ -1050,7 +1050,7 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
int ret = 0;
int chipnr, status, page;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

pr_debug("%s: start = 0x%012llx, len = %llu\n",
__func__, (unsigned long long)ofs, len);
@@ -1655,7 +1655,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
*/
static int nand_setup_read_retry(struct mtd_info *mtd, int retry_mode)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

pr_debug("setting READ RETRY mode %d\n", retry_mode);

@@ -1680,7 +1680,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
int chipnr, page, realpage, col, bytes, aligned, oob_required;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
int ret = 0;
uint32_t readlen = ops->len;
uint32_t oobreadlen = ops->ooblen;
@@ -2024,7 +2024,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
int page, realpage, chipnr;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct mtd_ecc_stats stats;
int readlen = ops->ooblen;
int len;
@@ -2472,7 +2472,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len,
struct mtd_oob_ops *ops)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

/*
* Initialise to all 0xFF, to avoid the possibility of left over OOB
@@ -2532,7 +2532,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops)
{
int chipnr, realpage, page, blockmask, column;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
uint32_t writelen = ops->len;

uint32_t oobwritelen = ops->ooblen;
@@ -2662,7 +2662,7 @@ err_out:
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 nand_chip *chip = mtd_to_nand(mtd);
struct mtd_oob_ops ops;
int ret;

@@ -2722,7 +2722,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops)
{
int chipnr, page, status, len;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

pr_debug("%s: to = 0x%08x, len = %i\n",
__func__, (unsigned int)to, (int)ops->ooblen);
@@ -2847,7 +2847,7 @@ out:
*/
static int single_erase(struct mtd_info *mtd, int page)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
/* Send commands to erase a block */
chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
@@ -2879,7 +2879,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
int allowbbt)
{
int page, status, pages_per_block, ret, chipnr;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
loff_t len;

pr_debug("%s: start = 0x%012llx, len = %llu\n",
@@ -3094,7 +3094,7 @@ static int nand_suspend(struct mtd_info *mtd)
*/
static void nand_resume(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

if (chip->state == FL_PM_SUSPENDED)
nand_release_device(mtd);
@@ -3266,7 +3266,7 @@ ext_out:

static int nand_setup_read_retry_micron(struct mtd_info *mtd, int retry_mode)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
uint8_t feature[ONFI_SUBFEATURE_PARAM_LEN] = {retry_mode};

return chip->onfi_set_features(mtd, chip, ONFI_FEATURE_ADDR_READ_RETRY,
@@ -3985,7 +3985,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
struct nand_flash_dev *table)
{
int i, nand_maf_id, nand_dev_id;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_flash_dev *type;
int ret;

@@ -4056,7 +4056,7 @@ EXPORT_SYMBOL(nand_scan_ident);
*/
static bool nand_ecc_strength_good(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_ecc_ctrl *ecc = &chip->ecc;
int corr, ds_corr;

@@ -4085,7 +4085,7 @@ static bool nand_ecc_strength_good(struct mtd_info *mtd)
int nand_scan_tail(struct mtd_info *mtd)
{
int i;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_ecc_ctrl *ecc = &chip->ecc;
struct nand_buffers *nbuf;

@@ -4429,7 +4429,7 @@ EXPORT_SYMBOL(nand_scan);
*/
void nand_release(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

if (chip->ecc.mode == NAND_ECC_SOFT_BCH)
nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index b1d4f81..4b6a708 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -172,7 +172,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
struct nand_bbt_descr *td, int offs)
{
int res, ret = 0, i, j, act = 0;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
size_t retlen, len, totlen;
loff_t from;
int bits = td->options & NAND_BBT_NRBITS_MSK;
@@ -263,7 +263,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
*/
static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int res = 0, i;

if (td->options & NAND_BBT_PERCHIP) {
@@ -388,7 +388,7 @@ static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td)
static void read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
struct nand_bbt_descr *td, struct nand_bbt_descr *md)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);

/* Read the primary version, if available */
if (td->options & NAND_BBT_VERSION) {
@@ -454,7 +454,7 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
struct nand_bbt_descr *bd, int chip)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int i, numblocks, numpages;
int startblock;
loff_t from;
@@ -523,7 +523,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
*/
static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int i, chips;
int startblock, block, dir;
int scanlen = mtd->writesize + mtd->oobsize;
@@ -618,7 +618,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
struct nand_bbt_descr *td, struct nand_bbt_descr *md,
int chipsel)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
struct erase_info einfo;
int i, res, chip = 0;
int bits, startblock, dir, page, offs, numblocks, sft, sftmsk;
@@ -819,7 +819,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
*/
static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);

return create_bbt(mtd, this->buffers->databuf, bd, -1);
}
@@ -838,7 +838,7 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b
static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
{
int i, chips, writeops, create, chipsel, res, res2;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
struct nand_bbt_descr *td = this->bbt_td;
struct nand_bbt_descr *md = this->bbt_md;
struct nand_bbt_descr *rd, *rd2;
@@ -962,7 +962,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
*/
static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int i, j, chips, block, nrblocks, update;
uint8_t oldval;

@@ -1022,7 +1022,7 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
*/
static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
u32 pattern_len;
u32 bits;
u32 table_size;
@@ -1074,7 +1074,7 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd)
*/
static int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int len, res;
uint8_t *buf;
struct nand_bbt_descr *td = this->bbt_td;
@@ -1147,7 +1147,7 @@ err:
*/
static int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int len, res = 0;
int chip, chipsel;
uint8_t *buf;
@@ -1281,7 +1281,7 @@ static int nand_create_badblock_pattern(struct nand_chip *this)
*/
int nand_default_bbt(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int ret;

/* Is a flash based bad block table requested? */
@@ -1317,7 +1317,7 @@ int nand_default_bbt(struct mtd_info *mtd)
*/
int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int block;

block = (int)(offs >> this->bbt_erase_shift);
@@ -1332,7 +1332,7 @@ int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs)
*/
int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int block, res;

block = (int)(offs >> this->bbt_erase_shift);
@@ -1359,7 +1359,7 @@ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
*/
int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
int block, ret = 0;

block = (int)(offs >> this->bbt_erase_shift);
diff --git a/drivers/mtd/nand/nand_bch.c b/drivers/mtd/nand/nand_bch.c
index 3803e0b..e5758d8 100644
--- a/drivers/mtd/nand/nand_bch.c
+++ b/drivers/mtd/nand/nand_bch.c
@@ -52,7 +52,7 @@ struct nand_bch_control {
int nand_bch_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf,
unsigned char *code)
{
- const struct nand_chip *chip = mtd->priv;
+ const struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_bch_control *nbc = chip->ecc.priv;
unsigned int i;

@@ -79,7 +79,7 @@ EXPORT_SYMBOL(nand_bch_calculate_ecc);
int nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf,
unsigned char *read_ecc, unsigned char *calc_ecc)
{
- const struct nand_chip *chip = mtd->priv;
+ const struct nand_chip *chip = mtd_to_nand(mtd);
struct nand_bch_control *nbc = chip->ecc.priv;
unsigned int *errloc = nbc->errloc;
int i, count;
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index 97c4c02..e612985 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -424,7 +424,7 @@ int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf,
unsigned char *code)
{
__nand_calculate_ecc(buf,
- ((struct nand_chip *)mtd->priv)->ecc.size, code);
+ mtd_to_nand(mtd)->ecc.size, code);

return 0;
}
@@ -524,7 +524,7 @@ int nand_correct_data(struct mtd_info *mtd, unsigned char *buf,
unsigned char *read_ecc, unsigned char *calc_ecc)
{
return __nand_correct_data(buf, read_ecc, calc_ecc,
- ((struct nand_chip *)mtd->priv)->ecc.size);
+ mtd_to_nand(mtd)->ecc.size);
}
EXPORT_SYMBOL(nand_correct_data);

diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index b16d70a..eb2a567 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -666,7 +666,7 @@ static char *get_partition_name(int i)
*/
static int init_nandsim(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
struct nandsim *ns = chip->priv;
int i, ret = 0;
uint64_t remains;
@@ -1908,7 +1908,7 @@ static void switch_state(struct nandsim *ns)

static u_char ns_nand_read_byte(struct mtd_info *mtd)
{
- struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(mtd)->priv;
u_char outb = 0x00;

/* Sanity and correctness checks */
@@ -1969,7 +1969,7 @@ static u_char ns_nand_read_byte(struct mtd_info *mtd)

static void ns_nand_write_byte(struct mtd_info *mtd, u_char byte)
{
- struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(mtd)->priv;

/* Sanity and correctness checks */
if (!ns->lines.ce) {
@@ -2123,7 +2123,7 @@ static void ns_nand_write_byte(struct mtd_info *mtd, u_char byte)

static void ns_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int bitmask)
{
- struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(mtd)->priv;

ns->lines.cle = bitmask & NAND_CLE ? 1 : 0;
ns->lines.ale = bitmask & NAND_ALE ? 1 : 0;
@@ -2141,7 +2141,7 @@ static int ns_device_ready(struct mtd_info *mtd)

static uint16_t ns_nand_read_word(struct mtd_info *mtd)
{
- struct nand_chip *chip = (struct nand_chip *)mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);

NS_DBG("read_word\n");

@@ -2150,7 +2150,7 @@ static uint16_t ns_nand_read_word(struct mtd_info *mtd)

static void ns_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
{
- struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(mtd)->priv;

/* Check that chip is expecting data input */
if (!(ns->state & STATE_DATAIN_MASK)) {
@@ -2177,7 +2177,7 @@ static void ns_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)

static void ns_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
{
- struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(mtd)->priv;

/* Sanity and correctness checks */
if (!ns->lines.ce) {
@@ -2198,7 +2198,7 @@ static void ns_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
int i;

for (i = 0; i < len; i++)
- buf[i] = ((struct nand_chip *)mtd->priv)->read_byte(mtd);
+ buf[i] = mtd_to_nand(mtd)->read_byte(mtd);

return;
}
@@ -2405,7 +2405,7 @@ module_init(ns_init_module);
*/
static void __exit ns_cleanup_module(void)
{
- struct nandsim *ns = ((struct nand_chip *)nsmtd->priv)->priv;
+ struct nandsim *ns = mtd_to_nand(nsmtd)->priv;
int i;

nandsim_debugfs_remove(ns);
--
2.1.4

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