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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2014-05-22 02:06:12 +0400 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-07-09 05:38:16 +0400 |
| commit | 8471bb73ba10ed6788b4f1e9b8a0f9dc6bdb05b5 (patch) | |
| tree | 12fdaa370ab34c38c4057ddca0a2bcd52b5744a8 /drivers/mtd/nand/nand_bbt.c | |
| parent | 990a3af0c20590954be01a95c2c3fcef9360a836 (diff) | |
| download | linux-8471bb73ba10ed6788b4f1e9b8a0f9dc6bdb05b5.tar.xz | |
mtd: Introduce mtd_block_isreserved()
In addition to mtd_block_isbad(), which checks if a block is bad or
reserved, it's needed to check if a block is reserved only (but not
bad). This commit adds an MTD interface for it, in a similar fashion to
mtd_block_isbad().
While here, fix mtd_block_isbad() so the out-of-bounds checking is done
before the callback check.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/nand/nand_bbt.c')
| -rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 7f0c3b4c2a4f..443fa82cde6a 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1311,6 +1311,20 @@ 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 |