Hi Stefan,
On Tue, Mar 16, 2021 at 01:36:26PM +0100, Stefan Riedmueller wrote:
> The blocks containing the bad block table can become bad as well. So
> make sure to skip any blocks that are marked bad when searching for the
> bad block table.
The file is a more or less direct copy from the kernel. Does the problem
exist in the kernel as well?
Sascha
>
> Signed-off-by: Stefan Riedmueller <s.riedmueller@xxxxxxxxx>
> ---
> drivers/mtd/nand/nand_bbt.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
> index a86b5b2da38e..0b48373e6a0b 100644
> --- a/drivers/mtd/nand/nand_bbt.c
> +++ b/drivers/mtd/nand/nand_bbt.c
> @@ -528,6 +528,7 @@ static int search_bbt(struct nand_chip *this, uint8_t *buf,
> {
> u64 targetsize = nanddev_target_size(&this->base);
> struct mtd_info *mtd = nand_to_mtd(this);
> + struct nand_bbt_descr *bd = this->badblock_pattern;
> int i, chips;
> int startblock, block, dir;
> int scanlen = mtd->writesize + mtd->oobsize;
> @@ -563,6 +564,9 @@ static int search_bbt(struct nand_chip *this, uint8_t *buf,
> int actblock = startblock + dir * block;
> loff_t offs = (loff_t)actblock << this->bbt_erase_shift;
>
> + /* Check if block is marked bad */
> + if (scan_block_fast(this, bd, offs, buf))
> + continue;
> /* Read first page */
> scan_read(this, buf, offs, mtd->writesize, td);
> if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
> --
> 2.25.1
>
>
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