From 25f068aa3e8aebda96a1a908a0bebd56f59374ca Mon Sep 17 00:00:00 2001 From: Mikhail Kshevetskiy Date: Mon, 22 Jun 2020 16:16:34 +0300 Subject: [PATCH] mtd: spinand: enable erasing of bad mtd blocks U-Boot is able to erase bad mtd blocks on raw nand devices, but this is not true for spinand flashes. Lets enable this feature for spinand flashes as well. This is extemelly useful for flash testing. Signed-off-by: Mikhail Kshevetskiy --- drivers/mtd/nand/core.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/core.c b/drivers/mtd/nand/core.c index 6fbd24b..219efdc 100644 --- a/drivers/mtd/nand/core.c +++ b/drivers/mtd/nand/core.c @@ -130,10 +130,18 @@ EXPORT_SYMBOL_GPL(nanddev_isreserved); */ int nanddev_erase(struct nand_device *nand, const struct nand_pos *pos) { + unsigned int entry; + if (nanddev_isbad(nand, pos) || nanddev_isreserved(nand, pos)) { pr_warn("attempt to erase a bad/reserved block @%llx\n", nanddev_pos_to_offs(nand, pos)); - return -EIO; + if (nanddev_isreserved(nand, pos)) + return -EIO; + + /* remove bad block from BBT */ + entry = nanddev_bbt_pos_to_entry(nand, pos); + nanddev_bbt_set_block_status(nand, entry, + NAND_BBT_BLOCK_STATUS_UNKNOWN); } return nand->ops->erase(nand, pos); -- 2.7.4