[PATCH 5.10 459/545] mtd: rawnand: arasan: Check the proposed data interface is supported

[Greg Kroah-Hartman]

From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>

[ Upstream commit 4dd7ef970bee8a93e1817ec028a7e26aef046d0d ]

Check the data interface is supported in ->setup_interface() before
acknowledging the timings.

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20210505213750.257417-3-miquel.raynal@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mtd/nand/raw/arasan-nand-controller.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c
index cea57de5e6cd..f9fb3b7a3ec3 100644
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c
+++ b/drivers/mtd/nand/raw/arasan-nand-controller.c
@@ -884,6 +884,11 @@ static int anfc_setup_interface(struct nand_chip *chip, int target,
 	struct anand *anand = to_anand(chip);
 	struct arasan_nfc *nfc = to_anfc(chip->controller);
 	struct device_node *np = nfc->dev->of_node;
+	const struct nand_sdr_timings *sdr;
+
+	sdr = nand_get_sdr_timings(conf);
+	if (IS_ERR(sdr))
+		return PTR_ERR(sdr);
 
 	if (target < 0)
 		return 0;
-- 
2.35.1