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NAND: Wrong calculation of page number in nand_block_bad()

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In case that there is no memory based bad block table available the
function nand_block_checkbad() in drivers/mtd/nand/nand_base.c will call
nand_block_bad() directly. When parameter 'getchip' is set to zero,
nand_block_bad() will not right shift the offset to calculate the
correct page number.

Signed-off-by: Thomas Knobloch <knobloch@siemens.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Thomas Knobloch 2007-05-05 07:04:42 +02:00 • committed by Stefan Roese
parent 8d1c439e2d
commit a798865905
1 changed files with 5 additions and 5 deletions
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10
drivers/nand/nand_base.c
View file

@ -427,8 +427,9 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
struct nand_chip *this = mtd->priv;
u16 bad;
page = (int)(ofs >> this->page_shift) & this->pagemask;
if (getchip) {
page = (int)(ofs >> this->page_shift);
chipnr = (int)(ofs >> this->chip_shift);
/* Grab the lock and see if the device is available */
@ -436,18 +437,17 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
/* Select the NAND device */
this->select_chip(mtd, chipnr);
} else
page = (int) ofs;
}
if (this->options & NAND_BUSWIDTH_16) {
this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask);
this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page);
bad = cpu_to_le16(this->read_word(mtd));
if (this->badblockpos & 0x1)
bad >>= 1;
if ((bad & 0xFF) != 0xff)
res = 1;
} else {
this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask);
this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page);
if (this->read_byte(mtd) != 0xff)
res = 1;
}