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| author | Brian Norris <computersforpeace@gmail.com> | 2012-01-20 20:38:03 -0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-27 00:16:04 +0100 |
| commit | df698621a5b39ced5ce527444cafd50c6fdc186d (patch) | |
| tree | ae3316d7790e13ac7412309b9ca2ba8dde95c118 | |
| parent | f0e0c09b88b23ec418c065739096e198e8d6be22 (diff) | |
| download | linux-df698621a5b39ced5ce527444cafd50c6fdc186d.tar.gz linux-df698621a5b39ced5ce527444cafd50c6fdc186d.tar.bz2 linux-df698621a5b39ced5ce527444cafd50c6fdc186d.zip | |
mtd: nand: move SCANLASTPAGE handling to the correct code block
As nand_default_block_markbad() is becoming more complex, it helps to
have code appear only in its relevant codepath(s). Here, the calculation
of `ofs' based on NAND_BBT_SCANLASTPAGE is only useful on paths where we
write bad block markers to OOB. We move the condition/calculation closer
to the `write' operation and update the comment to more correctly
describe the operation.
The variable `wr_ofs' is also used to help isolate our calculation of
the "write" offset from the usage of `ofs' to represent the eraseblock
offset. This will become useful when we reorder operations in the next
patch.
This patch should make no functional change.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index c6603d4b25c8..b90206613108 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -411,9 +411,6 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) nand_erase_nand(mtd, &einfo, 0); } - if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) - ofs += mtd->erasesize - mtd->writesize; - /* Get block number */ block = (int)(ofs >> chip->bbt_erase_shift); if (chip->bbt) @@ -424,11 +421,12 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) ret = nand_update_bbt(mtd, ofs); else { struct mtd_oob_ops ops; + loff_t wr_ofs = ofs; nand_get_device(chip, mtd, FL_WRITING); /* - * Write to first two pages if necessary. If we write to more + * Write to first/last page(s) if necessary. If we write to more * than one location, the first error encountered quits the * procedure. */ @@ -442,11 +440,14 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) ops.len = ops.ooblen = 1; } ops.mode = MTD_OPS_PLACE_OOB; + + if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) + wr_ofs += mtd->erasesize - mtd->writesize; do { - ret = nand_do_write_oob(mtd, ofs, &ops); + ret = nand_do_write_oob(mtd, wr_ofs, &ops); i++; - ofs += mtd->writesize; + wr_ofs += mtd->writesize; } while (!ret && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2); |