diff options
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d3b71a50a..a2d06be99 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1245,7 +1245,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, if (unlikely(ops->mode == MTD_OOB_RAW)) ret = chip->ecc.read_page_raw(mtd, chip, bufpoi, page); - else if (!aligned && NAND_SUBPAGE_READ(chip) && !oob) + else if (!aligned && NAND_HAS_SUBPAGE_READ(chip) && + !oob) ret = chip->ecc.read_subpage(mtd, chip, col, bytes, bufpoi); else @@ -1256,7 +1257,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, /* Transfer not aligned data */ if (!aligned) { - if (!NAND_SUBPAGE_READ(chip) && !oob && + if (!NAND_HAS_SUBPAGE_READ(chip) && !oob && !(mtd->ecc_stats.failed - stats.failed)) chip->pagebuf = realpage; memcpy(buf, chip->buffers->databuf + col, bytes); @@ -3150,6 +3151,10 @@ int nand_scan_tail(struct mtd_info *mtd) /* Invalidate the pagebuffer reference */ chip->pagebuf = -1; + /* Large page NAND with SOFT_ECC should support subpage reads */ + if ((chip->ecc.mode == NAND_ECC_SOFT) && (chip->page_shift > 9)) + chip->options |= NAND_SUBPAGE_READ; + /* Fill in remaining MTD driver data */ mtd->type = MTD_NANDFLASH; mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM : |