[PATCH] mtd: rawnand: arasan: Fix missing de-registration of NAND chip-selects

[Maciej Andrzejewski]

The NAND chip-selects are registered for the Arasan driver during
initialization but are not de-registered when the driver is unloaded. As a
result, if the driver is loaded again, the chip-selects remain registered
and busy, making them unavailable for use.

Fixes: 197b88fecc50ee3c7a22415db81eae0b9126f20e ("mtd: rawnand: arasan: Add new Arasan NAND controller")
Cc: stable at vger.kernel.org
Signed-off-by: Maciej Andrzejewski ICEYE <maciej.andrzejewski at m-works.net>
---
 drivers/mtd/nand/raw/arasan-nand-controller.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c
index 5436ec4a8fde..36c23fa186f2 100644
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c
+++ b/drivers/mtd/nand/raw/arasan-nand-controller.c
@@ -1478,8 +1478,15 @@ static int anfc_probe(struct platform_device *pdev)
 
 static void anfc_remove(struct platform_device *pdev)
 {
+	int i;
 	struct arasan_nfc *nfc = platform_get_drvdata(pdev);
 
+	for (i = 0; i < nfc->ncs; i++) {
+		if (nfc->cs_array[i]) {
+			gpiod_put(nfc->cs_array[i]);
+		}
+	}
+
 	anfc_chips_cleanup(nfc);
 }