Revert "mtd: rawnand: bbt: Skip bad blocks when searching for the BBT in NAND"

This reverts commit bd9c9fe.

Since commit bd9c9fe ("mtd: rawnand: bbt: Skip bad blocks when
searching for  the BBT in NAND") the bad block table cannot be found
on a imx27-phytec-phycard-s-rdk board:

Bad block table not found for chip 0
Bad block table not found for chip 0

Revert it for now, until a better solution can be found.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210419140350.809853-1-festevam@gmail.com

Author: fabioestevam

drivers/mtd/nand/raw/nand_bbt.c

@@ -525,7 +525,6 @@ 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;
@@ -561,10 +560,6 @@ 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)) {