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mtd: nand: refactor chip->block_markbad interface

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The chip->block_markbad pointer should really only be responsible for
writing a bad block marker for new bad blocks. It should not take care
of BBT-related functionality, nor should it handle bookkeeping of bad
block stats.

This patch refactors the 3 users of the block_markbad interface (plus
the default nand_base implementation) so that the common code is kept in
nand_block_markbad_lowlevel(). It removes some inconsistencies between
the various implementations and should allow for more centralized
improvements in the future.

Because gpmi-nand no longer needs the nand_update_bbt() function, let's
stop exporting it as well.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com> (for gpmi-nand parts)
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Brian Norris
2013-07-30 17:52:58 -07:00
committed by David Woodhouse
parent 39dbb02998
commit 5a0edb251a
5 changed files with 72 additions and 75 deletions
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6
drivers/mtd/nand/docg4.c
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@@ -1093,7 +1093,6 @@ static int docg4_block_markbad(struct mtd_info *mtd, loff_t ofs)
struct nand_chip *nand = mtd->priv;
struct docg4_priv *doc = nand->priv;
struct nand_bbt_descr *bbtd = nand->badblock_pattern;
int block = (int)(ofs >> nand->bbt_erase_shift);
int page = (int)(ofs >> nand->page_shift);
uint32_t g4_addr = mtd_to_docg4_address(page, 0);
@@ -1108,9 +1107,6 @@ static int docg4_block_markbad(struct mtd_info *mtd, loff_t ofs)
if (buf == NULL)
return -ENOMEM;
/* update bbt in memory */
nand->bbt[block / 4] |= 0x01 << ((block & 0x03) * 2);
/* write bit-wise negation of pattern to oob buffer */
memset(nand->oob_poi, 0xff, mtd->oobsize);
for (i = 0; i < bbtd->len; i++)
@@ -1120,8 +1116,6 @@ static int docg4_block_markbad(struct mtd_info *mtd, loff_t ofs)
write_page_prologue(mtd, g4_addr);
docg4_write_page(mtd, nand, buf, 1);
ret = pageprog(mtd);
if (!ret)
mtd->ecc_stats.badblocks++;
kfree(buf);