diff options
| author | Josh Wu <josh.wu@atmel.com> | 2015-04-02 14:12:33 +0800 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-04-05 17:47:56 -0700 |
| commit | 477478aedc8bdf1925785835609bc7e790f69aef (patch) | |
| tree | 6ab87ad3f0c947dfa2a94a56126cdd0c210cf244 | |
| parent | 3a434f66e6dab645d74a59c95651cdbe16497a50 (diff) | |
mtd: atmel_nand: add a definition for the oob reserved bytes
It's better to use a macro instead of just a number.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| -rw-r--r-- | drivers/mtd/nand/atmel_nand.c | 5 | ||||
| -rw-r--r-- | drivers/mtd/nand/atmel_nand_ecc.h | 3 |
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index feaac9099bb9..0361c1992673 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -485,7 +485,7 @@ static void pmecc_config_ecc_layout(struct nand_ecclayout *layout, for (i = 0; i < ecc_len; i++) layout->eccpos[i] = oobsize - ecc_len + i; - layout->oobfree[0].offset = 2; + layout->oobfree[0].offset = PMECC_OOB_RESERVED_BYTES; layout->oobfree[0].length = oobsize - ecc_len - layout->oobfree[0].offset; } @@ -1254,7 +1254,8 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, nand_chip->ecc.steps = mtd->writesize / sector_size; nand_chip->ecc.total = nand_chip->ecc.bytes * nand_chip->ecc.steps; - if (nand_chip->ecc.total > mtd->oobsize - 2) { + if (nand_chip->ecc.total > + mtd->oobsize - PMECC_OOB_RESERVED_BYTES) { dev_err(host->dev, "No room for ECC bytes\n"); err_no = -EINVAL; goto err; diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h index d4035e335ad8..668e7358f19b 100644 --- a/drivers/mtd/nand/atmel_nand_ecc.h +++ b/drivers/mtd/nand/atmel_nand_ecc.h @@ -152,4 +152,7 @@ /* Time out value for reading PMECC status register */ #define PMECC_MAX_TIMEOUT_MS 100 +/* Reserved bytes in oob area */ +#define PMECC_OOB_RESERVED_BYTES 2 + #endif |