diff options
Diffstat (limited to 'drivers/mtd/nand/nand_bbt.c')
-rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 62 |
1 files changed, 31 insertions, 31 deletions
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 00f28a4157..74c4c9a3c8 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1,6 +1,4 @@ /* - * drivers/mtd/nand_bbt.c - * * Overview: * Bad block table support for the NAND driver * @@ -65,7 +63,6 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/bbm.h> #include <linux/mtd/nand.h> -#include <linux/mtd/nand_ecc.h> #include <linux/bitops.h> #include <linux/string.h> @@ -173,7 +170,7 @@ 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; @@ -264,7 +261,7 @@ 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) { @@ -389,7 +386,7 @@ 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) { @@ -455,7 +452,7 @@ 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; @@ -524,7 +521,7 @@ 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; @@ -619,7 +616,7 @@ 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; @@ -718,7 +715,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, /* Must we save the block contents? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ - to &= ~((loff_t)((1 << this->bbt_erase_shift) - 1)); + to &= ~(((loff_t)1 << this->bbt_erase_shift) - 1); len = 1 << this->bbt_erase_shift; res = mtd_read(mtd, to, len, &retlen, buf); if (res < 0) { @@ -820,7 +817,7 @@ 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); } @@ -839,7 +836,7 @@ 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; @@ -963,7 +960,7 @@ 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; @@ -1023,7 +1020,7 @@ 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; @@ -1073,15 +1070,15 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) * The bad block table memory is allocated here. It must be freed by calling * the nand_free_bbt function. */ -int nand_scan_bbt(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; - int len, res = 0; + struct nand_chip *this = mtd_to_nand(mtd); + int len, res; uint8_t *buf; struct nand_bbt_descr *td = this->bbt_td; struct nand_bbt_descr *md = this->bbt_md; - len = mtd->size >> (this->bbt_erase_shift + 2); + len = (mtd->size >> (this->bbt_erase_shift + 2)) ? : 1; /* * Allocate memory (2bit per block) and clear the memory bad block * table. @@ -1097,10 +1094,9 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { pr_err("nand_bbt: can't scan flash and build the RAM-based BBT\n"); - kfree(this->bbt); - this->bbt = NULL; + goto err; } - return res; + return 0; } verify_bbt_descr(mtd, td); verify_bbt_descr(mtd, md); @@ -1110,9 +1106,8 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) len += (len >> this->page_shift) * mtd->oobsize; buf = vmalloc(len); if (!buf) { - kfree(this->bbt); - this->bbt = NULL; - return -ENOMEM; + res = -ENOMEM; + goto err; } /* Is the bbt at a given page? */ @@ -1124,6 +1119,8 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) } res = check_create(mtd, buf, bd); + if (res) + goto err; /* Prevent the bbt regions from erasing / writing */ mark_bbt_region(mtd, td); @@ -1131,6 +1128,11 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) mark_bbt_region(mtd, md); vfree(buf); + return 0; + +err: + kfree(this->bbt); + this->bbt = NULL; return res; } @@ -1143,7 +1145,7 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) */ 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; @@ -1277,7 +1279,7 @@ 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? */ @@ -1313,7 +1315,7 @@ 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); @@ -1328,7 +1330,7 @@ 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); @@ -1355,7 +1357,7 @@ 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); @@ -1369,5 +1371,3 @@ int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs) return ret; } - -EXPORT_SYMBOL(nand_scan_bbt); |