Commit 02ed70bb authored by Brian Norris's avatar Brian Norris Committed by David Woodhouse
Browse files

mtd: nand: update nand_default_block_markbad() 



This is an update that depends on the previous patches I sent.

We can now write to all the appropriate BB marker locations (i.e.
pages 1 AND 2, bytes 1 AND 6) with nand_default_block_markbad() if
necessary, according to the flags marked in chip->options.

Note that I removed the line:
	ofs += mtd->oobsize;
Unless I am wrong, this line was completely unnecessary in the
first place.

Signed-off-by: default avatarBrian Norris <norris@broadcom.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 6ea9ad24

drivers/mtd/nand/nand_base.c

+24 −10
Original line number Diff line number Diff line
@@ -397,7 +397,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) 
{

	struct nand_chip *chip = mtd->priv;

	uint8_t buf[2] = { 0, 0 };

	int block, ret;

	int block, ret, i = 0;



	if (chip->options & NAND_BBT_SCANLASTPAGE)

		ofs += mtd->erasesize - mtd->writesize;
@@ -411,17 +411,31 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) 
	if (chip->options & NAND_USE_FLASH_BBT)

		ret = nand_update_bbt(mtd, ofs);

	else {

		/* We write two bytes, so we dont have to mess with 16 bit

		 * access

		 */

		nand_get_device(chip, mtd, FL_WRITING);

		ofs += mtd->oobsize;



		/* Write to first two pages and to byte 1 and 6 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.

		 */

		do {

			chip->ops.len = chip->ops.ooblen = 2;

			chip->ops.datbuf = NULL;

			chip->ops.oobbuf = buf;

			chip->ops.ooboffs = chip->badblockpos & ~0x01;



			ret = nand_do_write_oob(mtd, ofs, &chip->ops);



			if (!ret && (chip->options & NAND_BBT_SCANBYTE1AND6)) {

				chip->ops.ooboffs = NAND_SMALL_BADBLOCK_POS

					& ~0x01;

				ret = nand_do_write_oob(mtd, ofs, &chip->ops);

			}

			i++;

			ofs += mtd->writesize;

		} while (!ret && (chip->options & NAND_BBT_SCAN2NDPAGE) &&

				i < 2);



		nand_release_device(mtd);

	}

	if (!ret)

CRA Git | Maintained and supported by SUSTech CRA and CCSE