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Revert "mtd: mxc_nand: fix 2KiB pagesize NAND on i.MX27"

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This reverts commit 71b7d0d90d.

The problem which that commit attempted to fix was a bootloader issue,
which had been misunderstood. The 'fix' causes lots of false bad blocks
for existing users with sane firmware.

Thanks to Mathieu Berland for diagnosing the problem coherently.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-10-20 22:02:41 +09:00
parent 6f4e137e9a
commit 1cc523999e
1 changed files with 1 additions and 15 deletions
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16
drivers/mtd/nand/mxc_nand.c
View file

@ -857,17 +857,6 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
}
}
/* Define some generic bad / good block scan pattern which are used
* while scanning a device for factory marked good / bad blocks. */
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
static struct nand_bbt_descr smallpage_memorybased = {
.options = NAND_BBT_SCAN2NDPAGE,
.offs = 5,
.len = 1,
.pattern = scan_ff_pattern
};
static int __init mxcnd_probe(struct platform_device *pdev)
{
struct nand_chip *this;
@ -984,10 +973,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
goto escan;
}
if (mtd->writesize == 2048) {
host->pagesize_2k = 1;
this->badblock_pattern = &smallpage_memorybased;
}
host->pagesize_2k = (mtd->writesize == 2048) ? 1 : 0;
if (this->ecc.mode == NAND_ECC_HW) {
switch (mtd->oobsize) {