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path: root/drivers/mtd/nand/s3c2410.c
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Diffstat (limited to 'drivers/mtd/nand/s3c2410.c')
-rw-r--r--drivers/mtd/nand/s3c2410.c36
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 9c9397b54..d9309cf0c 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -84,11 +84,33 @@
/* new oob placement block for use with hardware ecc generation
*/
+static int s3c2410_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section)
+ return -ERANGE;
+
+ oobregion->offset = 0;
+ oobregion->length = 3;
+
+ return 0;
+}
+
+static int s3c2410_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section)
+ return -ERANGE;
+
+ oobregion->offset = 8;
+ oobregion->length = 8;
+
+ return 0;
+}
-static struct nand_ecclayout nand_hw_eccoob = {
- .eccbytes = 3,
- .eccpos = {0, 1, 2},
- .oobfree = {{8, 8}}
+static const struct mtd_ooblayout_ops s3c2410_ooblayout_ops = {
+ .ecc = s3c2410_ooblayout_ecc,
+ .free = s3c2410_ooblayout_free,
};
/* controller and mtd information */
@@ -542,7 +564,8 @@ static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
diff0 |= (diff1 << 8);
diff0 |= (diff2 << 16);
- if ((diff0 & ~(1<<fls(diff0))) == 0)
+ /* equal to "(diff0 & ~(1 << __ffs(diff0)))" */
+ if ((diff0 & (diff0 - 1)) == 0)
return 1;
return -1;
@@ -859,6 +882,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
}
#else
chip->ecc.mode = NAND_ECC_SOFT;
+ chip->ecc.algo = NAND_ECC_HAMMING;
#endif
if (set->disable_ecc)
@@ -919,7 +943,7 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
} else {
chip->ecc.size = 512;
chip->ecc.bytes = 3;
- chip->ecc.layout = &nand_hw_eccoob;
+ mtd_set_ooblayout(nand_to_mtd(chip), &s3c2410_ooblayout_ops);
}
}