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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2014-05-21 19:06:12 -0300 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-08-25 22:53:57 -0500 |
| commit | 86a720aafce5b2571af66b8d7e04b144c05b1b8b (patch) | |
| tree | 6b9b34f8e096ecb6df29466855d250e6e749b605 /drivers/mtd/nand/nand_bbt.c | |
| parent | 273310644f4aef806d84d5b8b70c45aa60e7caaf (diff) | |
| download | blackbird-obmc-uboot-86a720aafce5b2571af66b8d7e04b144c05b1b8b.tar.gz blackbird-obmc-uboot-86a720aafce5b2571af66b8d7e04b144c05b1b8b.zip | |
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>
[scottwood: Cherry-picked from Linux 8471bb73ba10ed67]
Signed-off-by: Scott Wood <scottwood@freescale.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 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 |
