From 4fee6c2f295f932b8febdc7ce8731ba045695fa5 Mon Sep 17 00:00:00 2001 From: Christian Hitz Date: Wed, 12 Oct 2011 09:32:06 +0200 Subject: nand: make 1-bit software ECC configurable The software ECC algorithm is not necessary when hardware ECC is available and can be left out for a smaller image size. Enable with CONFIG_MTD_ECC_SOFT. Signed-off-by: Christian Hitz Cc: Scott Wood Signed-off-by: Scott Wood --- include/linux/mtd/nand_ecc.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand_ecc.h b/include/linux/mtd/nand_ecc.h index 090da50..9715a53 100644 --- a/include/linux/mtd/nand_ecc.h +++ b/include/linux/mtd/nand_ecc.h @@ -15,6 +15,10 @@ struct mtd_info; +#if defined(CONFIG_MTD_ECC_SOFT) + +static inline int mtd_nand_has_ecc_soft(void) { return 1; } + /* * Calculate 3 byte ECC code for 256 byte block */ @@ -25,4 +29,25 @@ int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code */ int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc); +#else + +static inline int mtd_nand_has_ecc_soft(void) { return 0; } + +static inline int +nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) +{ + return -1; +} + +static inline int +nand_correct_data(struct mtd_info *mtd, + u_char *dat, + u_char *read_ecc, + u_char *calc_ecc) +{ + return -1; +} + +#endif + #endif /* __MTD_NAND_ECC_H__ */ -- cgit v1.1