[PATCH 07/14] mtd: rawnand: brcmnand: fix hamming oob layout

[Linus Walleij]

From: Álvaro Fernández Rojas <noltari at gmail.com>

First 2 bytes are used in large-page nand.

Fixes: ef5eeea6e911 ("mtd: nand: brcm: switch to mtd_ooblayout_ops")
Cc: stable at vger.kernel.org
Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200512075733.745374-2-noltari@gmail.com
[Ported to U-Boot from the Linux kernel]
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
 drivers/mtd/nand/raw/brcmnand/brcmnand.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index fdc1fc6c1043..7cb6f2651250 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -1059,11 +1059,14 @@ static int brcmnand_hamming_ooblayout_free(struct mtd_info *mtd, int section,
 		if (!section) {
 			/*
 			 * Small-page NAND use byte 6 for BBI while large-page
-			 * NAND use byte 0.
+			 * NAND use bytes 0 and 1.
 			 */
-			if (cfg->page_size > 512)
-				oobregion->offset++;
-			oobregion->length--;
+			if (cfg->page_size > 512) {
+				oobregion->offset += 2;
+				oobregion->length -= 2;
+			} else {
+				oobregion->length--;
+			}
 		}
 	}
 
-- 
2.39.0