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Commit 1d0b95b0 authored by Mike Dunn's avatar Mike Dunn Committed by David Woodhouse
Browse files

mtd: add ecc_strength fields to mtd structs 



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: default avatarMike Dunn <mikedunn@newsguy.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent d107bc34

include/linux/mtd/mtd.h

+3 −0
Original line number Diff line number Diff line
@@ -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.

	 */

include/linux/mtd/nand.h

+2 −0
Original line number Diff line number Diff line
@@ -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;