[PATCH 5.10 031/120] mtd: rawnand: marvell: ensure timing values are written

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From: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>

[ Upstream commit 8a6f4d346f3bad9c68b4a87701eb3f7978542d57 ]

When new timing values are calculated in marvell_nfc_setup_interface()
ensure that they will be applied in marvell_nfc_select_target() by
clearing the selected_chip pointer.

Fixes: b25251414f6e ("mtd: rawnand: marvell: Stop implementing ->select_chip()")
Suggested-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20230525003154.2303012-1-chris.packham@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mtd/nand/raw/marvell_nand.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c
index dce35f81e0a55..9d437f1566ed5 100644
--- a/drivers/mtd/nand/raw/marvell_nand.c
+++ b/drivers/mtd/nand/raw/marvell_nand.c
@@ -2443,6 +2443,12 @@ static int marvell_nfc_setup_interface(struct nand_chip *chip, int chipnr,
 			NDTR1_WAIT_MODE;
 	}
 
+	/*
+	 * Reset nfc->selected_chip so the next command will cause the timing
+	 * registers to be updated in marvell_nfc_select_target().
+	 */
+	nfc->selected_chip = NULL;
+
 	return 0;
 }
 
-- 
2.39.2






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