diff options
Diffstat (limited to 'drivers/mtd/nand/nand_bbt.c')
| -rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index bac481a123dd..ae3fb58591cf 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -79,6 +79,8 @@ #define BBT_ENTRY_MASK 0x03 #define BBT_ENTRY_SHIFT 2 +static int nand_update_bbt(struct mtd_info *mtd, loff_t offs); + static inline uint8_t bbt_get_entry(struct nand_chip *chip, int block) { uint8_t entry = chip->bbt[block >> BBT_ENTRY_SHIFT]; @@ -1194,13 +1196,13 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) } /** - * nand_update_bbt - [NAND Interface] update bad block table(s) + * nand_update_bbt - update bad block table(s) * @mtd: MTD device structure * @offs: the offset of the newly marked block * * The function updates the bad block table(s). */ -int nand_update_bbt(struct mtd_info *mtd, loff_t offs) +static int nand_update_bbt(struct mtd_info *mtd, loff_t offs) { struct nand_chip *this = mtd->priv; int len, res = 0; @@ -1390,5 +1392,27 @@ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) return 1; } +/** + * nand_markbad_bbt - [NAND Interface] Mark a block bad in the BBT + * @mtd: MTD device structure + * @offs: offset of the bad block + */ +int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs) +{ + struct nand_chip *this = mtd->priv; + int block, ret = 0; + + block = (int)(offs >> this->bbt_erase_shift); + + /* Mark bad block in memory */ + bbt_mark_entry(this, block, BBT_BLOCK_WORN); + + /* Update flash-based bad block table */ + if (this->bbt_options & NAND_BBT_USE_FLASH) + ret = nand_update_bbt(mtd, offs); + + return ret; +} + EXPORT_SYMBOL(nand_scan_bbt); EXPORT_SYMBOL(nand_default_bbt); |