The function nand_davinci_read_page_hwecc_oob_first() first reads the
OOB data, extracts the ECC information, programs the ECC hardware before
reading the actual data in a loop.
Right after the OOB data was read, it called nand_read_page_op() to
reset the read cursor to the beginning of the page. This caused the
first page to be read twice: in that call, and later in the loop.
Address that issue by changing the call to nand_read_page_op() to
nand_change_read_column_op(), which will only reset the read cursor.
Cc: <stable@xxxxxxxxxxxxxxx> # v5.2
Fixes: a0ac778eb82c ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
drivers/mtd/nand/raw/davinci_nand.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c
index 89de24d3bb7a..2e6a0c1671be 100644
--- a/drivers/mtd/nand/raw/davinci_nand.c
+++ b/drivers/mtd/nand/raw/davinci_nand.c
@@ -401,7 +401,8 @@ static int nand_davinci_read_page_hwecc_oob_first(struct nand_chip *chip,
if (ret)
return ret;
- ret = nand_read_page_op(chip, page, 0, NULL, 0);
+ /* Move read cursor to start of page */
+ ret = nand_change_read_column_op(chip, 0, NULL, 0, false);
if (ret)
return ret;
--
2.33.0
