[PATCH v3 5/5] mtd: nand: sunxi: fix bitflips in erased pages

[Boris Brezillon]

Use the and_check_erased_ecc_chunk() function to test if the ECC error
was triggered by an erased page containing a few bitflips.

Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
 drivers/mtd/nand/sunxi_nand.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
index ae07850..0ae45ce 100644
--- a/drivers/mtd/nand/sunxi_nand.c
+++ b/drivers/mtd/nand/sunxi_nand.c
@@ -614,7 +614,9 @@ static int sunxi_nfc_hw_ecc_read_chunk(struct mtd_info *mtd,
 	sunxi_nfc_read_buf(mtd, oob, ecc->bytes + 4);
 
 	if (status & NFC_ECC_ERR(0)) {
-		ret = -EIO;
+		ret = nand_check_erased_ecc_chunk(data,	ecc->size,
+						  oob, ecc->bytes + 4,
+						  NULL, 0, ecc->strength);
 	} else {
 		/*
 		 * The engine protects 4 bytes OOB data per chunk.
-- 
1.9.1