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467e6e7be2
linux/drivers/mtd
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Vipin Kumar 467e6e7be2 mtd: nand/fsmc: Initialize the badblockbits to 7 
Ideally, the block should have 0xff written on the bad block position. Any value
other than 0xff implies a bad block. In practical situations, there can be
bit flips in the oob area as well which means that a block with 0x7f being read
at bad block position may imply a bad block but it is infact only a bit flip in
the bad block byte.

To resolve this problem, the block is marked as good if number of high bits is
greater than or equal to badblockbits (initialized to 7)

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-03-27 00:59:02 +01:00
..
chips mtd: chips: cfi_cmdset_0002: Match ENABLE_VPP()/DISABLE_VPP() calls 2012-03-27 00:52:23 +01:00
devices mtd: phram: dot not crash when built-in and passing boot param 2012-03-27 00:57:11 +01:00
lpddr mtd: move zero length verification to MTD API functions 2012-03-27 00:32:19 +01:00
maps mtd: do not use plain 0 as NULL 2012-03-27 00:53:20 +01:00
nand mtd: nand/fsmc: Initialize the badblockbits to 7 2012-03-27 00:59:02 +01:00
onenand mtd: flash drivers set ecc strength 2012-03-27 00:56:46 +01:00
tests mtd: introduce mtd_can_have_bb helper 2012-01-09 18:26:24 +00:00
ubi mtd: remove R/O checking duplication 2012-03-27 00:29:11 +01:00
afs.c mtd: introduce mtd_read interface 2012-01-09 18:25:19 +00:00
ar7part.c mtd: introduce mtd_read interface 2012-01-09 18:25:19 +00:00
bcm63xxpart.c mtd: introduce mtd_read interface 2012-01-09 18:25:19 +00:00
cmdlinepart.c Merge git://git.infradead.org/mtd-2.6 2011-11-07 09:11:16 -08:00
ftl.c mtd: do not use mtd->sync directly 2012-01-09 18:26:21 +00:00
inftlcore.c mtd: add leading underscore to all mtd functions 2012-03-27 00:20:01 +01:00
inftlmount.c mtd: introduce mtd_block_markbad interface 2012-01-09 18:25:48 +00:00
Kconfig mtd: mtdoops: kill Kconfig usage instructions 2012-03-27 00:15:37 +01:00
Makefile mtd: maps: bcm963xx-flash: make CFE partition parsing an mtd parser 2012-01-09 18:15:31 +00:00
mtd_blkdevs.c mtd: mtdblock: call mtd_sync() only if opened for write 2012-03-27 00:11:11 +01:00
mtdblock_ro.c mtd: introduce mtd_write interface 2012-01-09 18:25:20 +00:00
mtdblock.c mtd: mtdblock: call mtd_sync() only if opened for write 2012-03-27 00:11:11 +01:00
mtdchar.c mtd: add leading underscore to all mtd functions 2012-03-27 00:20:01 +01:00
mtdconcat.c mtd: remove retlen zeroing duplication 2012-03-27 00:29:34 +01:00
mtdcore.c mtd: check for zero length in OTP functions 2012-03-27 00:32:29 +01:00
mtdcore.h mtd: hide parse_mtd_partitions 2011-09-11 15:02:13 +03:00
mtdoops.c mtdoops: clean-up new MTD API usage 2012-03-27 00:23:53 +01:00
mtdpart.c mtd: flash drivers set ecc strength 2012-03-27 00:56:46 +01:00
mtdsuper.c Merge git://git.infradead.org/mtd-2.6 2011-11-07 09:11:16 -08:00
mtdswap.c mtd: do not use mtd->block_markbad directly 2012-01-09 18:26:26 +00:00
nftlcore.c mtd: nftlcore: remove out-of-date and now irrelevant piece of code 2012-03-27 00:24:03 +01:00
nftlmount.c mtd: introduce mtd_block_markbad interface 2012-01-09 18:25:48 +00:00
ofpart.c mtd: ofpart: add ofoldpart alias 2011-09-11 15:02:14 +03:00
redboot.c mtd: redboot: remove useless code 2012-03-27 00:24:14 +01:00
rfd_ftl.c mtd: do not use mtd->sync directly 2012-01-09 18:26:21 +00:00
sm_ftl.c mtd: introduce mtd_has_oob helper 2012-01-09 18:26:08 +00:00
sm_ftl.h
ssfdc.c mtd: introduce mtd_block_isbad interface 2012-01-09 18:25:47 +00:00