diff mbox series

[v5,6/7] mtd: rawnand: ESMT: Also use the last page for bad block markers

Message ID 20190417121420.21752-7-frieder.schrempf@kontron.de
State Accepted
Delegated to: Miquel Raynal
Headers show
Series mtd: rawnand: Support bad block markers in first, second or last page | expand

Commit Message

Frieder Schrempf April 17, 2019, 12:15 p.m. UTC 
From: Frieder Schrempf <frieder.schrempf@kontron.de>

It is known that some ESMT SLC NANDs have been shipped
with the factory bad block markers in the first or last page
of the block, instead of the first or second page. To be on
the safe side, let's check all three locations.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/mtd/nand/raw/nand_esmt.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c
index 58646ed663ac..3338c68aaaf1 100644
--- a/drivers/mtd/nand/raw/nand_esmt.c
+++ b/drivers/mtd/nand/raw/nand_esmt.c
@@ -36,7 +36,14 @@  static void esmt_nand_decode_id(struct nand_chip *chip)
 static int esmt_nand_init(struct nand_chip *chip)
 {
 	if (nand_is_slc(chip))
-		chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
+		/*
+		 * It is known that some ESMT SLC NANDs have been shipped
+		 * with the factory bad block markers in the first or last page
+		 * of the block, instead of the first or second page. To be on
+		 * the safe side, let's check all three locations.
+		 */
+		chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
+				 NAND_BBM_LASTPAGE;
 
 	return 0;
 }