mtd: rawnand: arasan: Fix missing de-registration of NAND

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: 197b88f ("mtd: rawnand: arasan: Add new Arasan NAND controller")
Cc: [email protected]
Signed-off-by: Maciej Andrzejewski ICEYE <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>

Author: mandrzejewski-iceye

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);
 }