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mtd: add ecc_strength fields to mtd structs

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This adds 'ecc_strength' to struct mtd_info.  This stores the maximum number of
bit errors that can be corrected in one writesize region.

For consistency with the nand code, 'strength' is similiarly added to struct
nand_ecc_ctrl.  This stores the maximum number of bit errors that can be
corrected in one ecc step.

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 14:21:10 -07:00 committed by David Woodhouse
parent d107bc34f4
commit 1d0b95b083
2 changed files with 5 additions and 0 deletions
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3
include/linux/mtd/mtd.h
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@ -164,6 +164,9 @@ struct mtd_info {
/* ECC layout structure pointer - read only! */
struct nand_ecclayout *ecclayout;
/* max number of correctible bit errors per writesize */
unsigned int ecc_strength;
/* Data for variable erase regions. If numeraseregions is zero,
* it means that the whole device has erasesize as given above.
*/

2
include/linux/mtd/nand.h
View file

@ -324,6 +324,7 @@ struct nand_hw_control {
* @steps: number of ECC steps per page
* @size: data bytes per ECC step
* @bytes: ECC bytes per step
* @strength: max number of correctible bits per ECC step
* @total: total number of ECC bytes per page
* @prepad: padding information for syndrome based ECC generators
* @postpad: padding information for syndrome based ECC generators
@ -351,6 +352,7 @@ struct nand_ecc_ctrl {
int size;
int bytes;
int total;
int strength;
int prepad;
int postpad;
struct nand_ecclayout *layout;