mtd: rawnand: AMD: Also use the last page for bad block markers

According to the datasheet of some Cypress SLC NANDs, the bad
block markers can be in the first, second or last page of a block.
So 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>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c
index 1417559d30578b9c9a891931b61198ed8478940b..6217555c19a6b95da0fae8a717a5f3012645d1fe 100644 (file)
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -45,7 +45,13 @@ static void amd_nand_decode_id(struct nand_chip *chip)
 static int amd_nand_init(struct nand_chip *chip)
 {
        if (nand_is_slc(chip))
-               chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
+               /*
+                * According to the datasheet of some Cypress SLC NANDs,
+                * the bad block markers can be in the first, second or last
+                * page of a block. So let's check all three locations.
+                */
+               chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
+                                NAND_BBM_LASTPAGE;
 
        return 0;
 }