[PATCH] mtd: rawnand: arasan: Check for bitflips in page data & its ECC data

[Amit Kumar Mahapatra]

During page read in HW-ECC mode the driver checks for bitflips to confirm
that the page is erased one or not, currently this check is only for page
data and not for ECC data of that page. Due to this, in case of ECC
corruption, the driver considers some of the page data as erased page data
and overwrites the valid data with 0xFF. Update the driver to include the
ECC bitflips check along with page data while checking for erased ECC data
chunk.

Fixes: 88ffef1b65cf ("mtd: rawnand: arasan: Support the hardware BCH ECC engine")
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra at amd.com>
---
BRANCH: nand/next
---
 drivers/mtd/nand/raw/arasan-nand-controller.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c
index 4621ec549cc7..547cc82b5d80 100644
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c
+++ b/drivers/mtd/nand/raw/arasan-nand-controller.c
@@ -481,7 +481,7 @@ static int anfc_read_page_hw_ecc(struct nand_chip *chip, u8 *buf,
 		}
 
 		bf = nand_check_erased_ecc_chunk(raw_buf, chip->ecc.size,
-						 NULL, 0, NULL, 0,
+						 anand->hw_ecc, chip->ecc.bytes, NULL, 0,
 						 chip->ecc.strength);
 		if (bf > 0) {
 			mtd->ecc_stats.corrected += bf;
-- 
2.25.1