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mtd: flash drivers set ecc strength

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Flash device drivers initialize 'ecc_strength' in struct mtd_info, which is the
maximum number of bit errors that can be corrected in one writesize region.

Drivers using the nand interface intitialize 'strength' in struct nand_ecc_ctrl,
which is the maximum number of bit errors that can be corrected in one ecc step.
Nand infrastructure code translates this to 'ecc_strength'.

Also for nand drivers, the nand infrastructure code sets ecc.strength for ecc
modes NAND_ECC_SOFT, NAND_ECC_SOFT_BCH, and NAND_ECC_NONE.  It is set in the
driver for all other modes.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Mike Dunn
2012-03-11 14:21:11 -07:00
committed by David Woodhouse
parent 1d0b95b083
commit 6a918bade9
31 changed files with 63 additions and 1 deletions
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1
drivers/mtd/nand/rtc_from4.c
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@@ -527,6 +527,7 @@ static int __init rtc_from4_init(void)
this->ecc.mode = NAND_ECC_HW_SYNDROME;
this->ecc.size = 512;
this->ecc.bytes = 8;
this->ecc.strength = 3;
/* return the status of extra status and ECC checks */
this->errstat = rtc_from4_errstat;
/* set the nand_oobinfo to support FPGA H/W error detection */