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mtd: nand_base: Only use GET/SET FEATURES command on chips that support them.

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Spansion's S34MLx chips support ONFI but not the GET/SET FEATURES calls.

Signed-off-by: David Mosberger <dmosberger@gmail.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:
David Mosberger 2013-05-29 15:30:13 +03:00 committed by David Woodhouse
parent 64ddba4d8a
commit d914c932d7
2 changed files with 9 additions and 2 deletions
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8
drivers/mtd/nand/nand_base.c
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@ -2709,7 +2709,9 @@ static int nand_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip,
{
int status;
if (!chip->onfi_version)
if (!chip->onfi_version ||
!(le16_to_cpu(chip->onfi_params.opt_cmd)
& ONFI_OPT_CMD_SET_GET_FEATURES))
return -EINVAL;
chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, addr, -1);
@ -2730,7 +2732,9 @@ static int nand_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip,
static int nand_onfi_get_features(struct mtd_info *mtd, struct nand_chip *chip,
int addr, uint8_t *subfeature_param)
{
if (!chip->onfi_version)
if (!chip->onfi_version ||
!(le16_to_cpu(chip->onfi_params.opt_cmd)
& ONFI_OPT_CMD_SET_GET_FEATURES))
return -EINVAL;
/* clear the sub feature parameters */

3
include/linux/mtd/nand.h
View File

@ -217,6 +217,9 @@ struct nand_chip;
/* ONFI subfeature parameters length */
#define ONFI_SUBFEATURE_PARAM_LEN 4
/* ONFI optional commands SET/GET FEATURES supported? */
#define ONFI_OPT_CMD_SET_GET_FEATURES (1 << 2)
struct nand_onfi_params {
/* rev info and features block */
/* 'O' 'N' 'F' 'I' */