[PATCH 4.19 323/346] mtd: spinand: Fix OOB read

[Greg Kroah-Hartman]

From: Miquel Raynal <miquel.ray...@bootlin.com>

commit 868cbe2a6dcee451bd8f87cbbb2a73cf463b57e5 upstream.

So far OOB have never been used in SPI-NAND, add the missing memcpy to
make it work properly.

Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs")
Cc: sta...@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.ray...@bootlin.com>
Link: 
https://lore.kernel.org/linux-mtd/20201001102014.20100-6-miquel.ray...@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/mtd/nand/spi/core.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -378,6 +378,10 @@ static int spinand_write_to_cache_op(str
                }
        }
 
+       if (req->ooblen)
+               memcpy(req->oobbuf.in, spinand->oobbuf + req->ooboffs,
+                      req->ooblen);
+
        return 0;
 }