[PATCH v2 03/10] mtd: rawnand: brcmnand: Fix ecc chunk calculation for erased page bitfips

[Linus Walleij]

From: Claire Lin <claire.lin at broadcom.com>

In brcmstb_nand_verify_erased_page(), the ECC chunk pointer calculation
while correcting erased page bitflips is wrong, fix it.

Fixes: 02b88eea9f9c ("mtd: brcmnand: Add check for erased page bitflips")
Signed-off-by: Claire Lin <claire.lin at broadcom.com>
Reviewed-by: Ray Jui <ray.jui at broadcom.com>
Signed-off-by: Kamal Dasu <kdasu.kdev at gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.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 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 170aece0aa79..0402cb06a74b 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -1765,6 +1765,7 @@ static int brcmstb_nand_verify_erased_page(struct mtd_info *mtd,
 	int bitflips = 0;
 	int page = addr >> chip->page_shift;
 	int ret;
+	void *ecc_chunk;
 
 	if (!buf) {
 #ifndef __UBOOT__
@@ -1784,7 +1785,9 @@ static int brcmstb_nand_verify_erased_page(struct mtd_info *mtd,
 		return ret;
 
 	for (i = 0; i < chip->ecc.steps; i++, oob += sas) {
-		ret = nand_check_erased_ecc_chunk(buf, chip->ecc.size,
+		ecc_chunk = buf + chip->ecc.size * i;
+		ret = nand_check_erased_ecc_chunk(ecc_chunk,
+						  chip->ecc.size,
 						  oob, sas, NULL, 0,
 						  chip->ecc.strength);
 		if (ret < 0)
-- 
2.39.1