diff options
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 19 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 26 | ||||
| -rw-r--r-- | include/linux/mtd/mtd.h | 4 |
3 files changed, 30 insertions, 19 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 138674183c1c..51dfea1b3ce6 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1474,18 +1474,13 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, if (unlikely(oob)) { - /* Raw mode does data:oob:data:oob */ - if (ops->mode != MTD_OOB_RAW) { - int toread = min(oobreadlen, - max_oobsize); - if (toread) { - oob = nand_transfer_oob(chip, - oob, ops, toread); - oobreadlen -= toread; - } - } else - buf = nand_transfer_oob(chip, - buf, ops, mtd->oobsize); + int toread = min(oobreadlen, max_oobsize); + + if (toread) { + oob = nand_transfer_oob(chip, + oob, ops, toread); + oobreadlen -= toread; + } } if (!(chip->options & NAND_NO_READRDY)) { diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 55c23e5cd210..387c45c366fe 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -237,15 +237,33 @@ static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len) { struct mtd_oob_ops ops; + int res; ops.mode = MTD_OOB_RAW; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; - ops.oobbuf = buf; - ops.datbuf = buf; - ops.len = len; - return mtd->read_oob(mtd, offs, &ops); + + while (len > 0) { + if (len <= mtd->writesize) { + ops.oobbuf = buf + len; + ops.datbuf = buf; + ops.len = len; + return mtd->read_oob(mtd, offs, &ops); + } else { + ops.oobbuf = buf + mtd->writesize; + ops.datbuf = buf; + ops.len = mtd->writesize; + res = mtd->read_oob(mtd, offs, &ops); + + if (res) + return res; + } + + buf += mtd->oobsize + mtd->writesize; + len -= mtd->writesize; + } + return 0; } /* diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 11d8e68d17c0..5326435a7571 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -60,9 +60,7 @@ struct mtd_erase_region_info { * MTD_OOB_PLACE: oob data are placed at the given offset * MTD_OOB_AUTO: oob data are automatically placed at the free areas * which are defined by the ecclayout - * MTD_OOB_RAW: mode to read raw data+oob in one chunk. The oob data - * is inserted into the data. Thats a raw image of the - * flash contents. + * MTD_OOB_RAW: mode to read oob and data without doing ECC checking */ typedef enum { MTD_OOB_PLACE, |