diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2012-01-14 03:11:49 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-27 01:12:34 +0200 |
| commit | 85443319989bb91814504608a6e11d880e156828 (patch) | |
| tree | d7609b50a19a05ed5f0566c03a2bf43eafe6db9b /drivers/mtd | |
| parent | mtd: nand: fix SCAN2NDPAGE check for BBM (diff) | |
| download | linux-85443319989bb91814504608a6e11d880e156828.tar.xz linux-85443319989bb91814504608a6e11d880e156828.zip | |
mtd: nand: differentiate 1- vs. 2-byte writes when marking bad blocks
It seems that we have developed a bad-block-marking "feature" out of
pure laziness:
"We write two bytes per location, so we dont have to mess with 16 bit
access."
It's relatively simple to write a 1 byte at a time on x8 devices and 2
bytes at a time on x16 devices, so let's do it.
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 7855fd2d5c60..c6603d4b25c8 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -430,13 +430,17 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) /* * Write to first two pages if necessary. If we write to more * than one location, the first error encountered quits the - * procedure. We write two bytes per location, so we dont have - * to mess with 16 bit access. + * procedure. */ - ops.len = ops.ooblen = 2; ops.datbuf = NULL; ops.oobbuf = buf; - ops.ooboffs = chip->badblockpos & ~0x01; + ops.ooboffs = chip->badblockpos; + if (chip->options & NAND_BUSWIDTH_16) { + ops.ooboffs &= ~0x01; + ops.len = ops.ooblen = 2; + } else { + ops.len = ops.ooblen = 1; + } ops.mode = MTD_OPS_PLACE_OOB; do { ret = nand_do_write_oob(mtd, ofs, &ops); |