diff options
| author | Jordan Friendshuh <jfriendshuh@xes-inc.com> | 2014-08-27 12:45:36 -0500 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-11-05 00:08:59 -0800 |
| commit | 438320dd34a4d0b2b177fbae749c3b9d00532faf (patch) | |
| tree | cb8404e21d7d422408074cf1ae9f0df1f83cc89f /drivers/mtd/nand/nand_base.c | |
| parent | c9d79c4bbb0e47a75f35652567b2647b99d6295e (diff) | |
| download | lwn-438320dd34a4d0b2b177fbae749c3b9d00532faf.tar.gz lwn-438320dd34a4d0b2b177fbae749c3b9d00532faf.zip | |
mtd: nand: Base BCH ECC bytes on required strength
NAND devices with page sizes over 4 KiB require more than 4-bits of ECC
coverage. This patch calculates the value of ecc_bytes based on a still
assumed 512-byte step size (13-bits) and the ecc_strength.
Example:
Micron M73A devices (8 KiB page) require 8-bit ECC per 512-byte
Signed-off-by: Jordan Friendshuh <jfriendshuh@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5b5c62712814..4b7e0287b48f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -4035,7 +4035,7 @@ int nand_scan_tail(struct mtd_info *mtd) */ if (!ecc->size && (mtd->oobsize >= 64)) { ecc->size = 512; - ecc->bytes = 7; + ecc->bytes = DIV_ROUND_UP(13 * ecc->strength, 8); } ecc->priv = nand_bch_init(mtd, ecc->size, ecc->bytes, &ecc->layout); |