linux-kernel - [PATCH] mtd: nand: mxc_nand: always copy

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Date: Tue, 28 May 2024 22:30:06 +0200
From: Sascha Hauer <s.hauer@...gutronix.de>
To: linux-mtd@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH] mtd: nand: mxc_nand: always copy_spare() for page write

When doing a page write we always have to copy the OOB data in place,
as the controller will always write it. Not copying it means we write
random data to the OOB area.

Fixes: 3df54960b63cc ("mtd: nand: mxc_nand: implement exec_op")
Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
---
Miquel, feel free to fixup the original patch with this.
---
 drivers/mtd/nand/raw/mxc_nand.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/nand/raw/mxc_nand.c b/drivers/mtd/nand/raw/mxc_nand.c
index 9d50f41b3d5a1..e90c6047e82a5 100644
--- a/drivers/mtd/nand/raw/mxc_nand.c
+++ b/drivers/mtd/nand/raw/mxc_nand.c
@@ -806,8 +806,7 @@ static int mxc_nand_write_page_ecc(struct nand_chip *chip, const uint8_t *buf,
 	struct mxc_nand_host *host = nand_get_controller_data(chip);
 	int ret;
 
-	if (oob_required)
-		copy_spare(mtd, false, chip->oob_poi);
+	copy_spare(mtd, false, chip->oob_poi);
 
 	host->devtype_data->enable_hwecc(chip, true);
 
@@ -823,8 +822,7 @@ static int mxc_nand_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
 
-	if (oob_required)
-		copy_spare(mtd, false, chip->oob_poi);
+	copy_spare(mtd, false, chip->oob_poi);
 
 	return nand_prog_page_op(chip, page, 0, buf, mtd->writesize);
 }
-- 
2.39.2