diff options
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 18 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 14 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index a488722ea6..bf4caa81eb 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -528,6 +528,23 @@ static int nand_check_wp(struct mtd_info *mtd) * nand_block_checkbad - [GENERIC] Check if a block is marked bad * @mtd: MTD device structure * @ofs: offset from device start + * + * Check if the block is mark as reserved. + */ +static int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs) +{ + struct nand_chip *chip = mtd->priv; + + if (!chip->bbt) + return 0; + /* Return info from the table */ + return nand_isreserved_bbt(mtd, ofs); +} + +/** + * nand_block_checkbad - [GENERIC] Check if a block is marked bad + * @mtd: MTD device structure + * @ofs: offset from device start * @getchip: 0, if the chip is already selected * @allowbbt: 1, if its allowed to access the bbt area * @@ -3883,6 +3900,7 @@ int nand_scan_tail(struct mtd_info *mtd) mtd->_sync = nand_sync; mtd->_lock = NULL; mtd->_unlock = NULL; + mtd->_block_isreserved = nand_block_isreserved; mtd->_block_isbad = nand_block_isbad; mtd->_block_markbad = nand_block_markbad; mtd->writebufsize = mtd->writesize; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 18c32af9aa..34b8ddcbcb 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1305,6 +1305,20 @@ int nand_default_bbt(struct mtd_info *mtd) } /** + * nand_isreserved_bbt - [NAND Interface] Check if a block is reserved + * @mtd: MTD device structure + * @offs: offset in the device + */ +int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs) +{ + struct nand_chip *this = mtd->priv; + int block; + + block = (int)(offs >> this->bbt_erase_shift); + return bbt_get_entry(this, block) == BBT_BLOCK_RESERVED; +} + +/** * nand_isbad_bbt - [NAND Interface] Check if a block is bad * @mtd: MTD device structure * @offs: offset in the device |