openwrtv3/target/linux/generic-2.6/patches-2.6.35/080-mtd_plat_nand_chip_fixup.patch

--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -491,6 +491,7 @@ struct platform_nand_chip {
 	int			chip_delay;
 	unsigned int		options;
 	const char		**part_probe_types;
+	int			(*chip_fixup)(struct mtd_info *mtd);
 	void			(*set_parts)(uint64_t size,
 					struct platform_nand_chip *chip);
 	void			*priv;
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -91,7 +91,18 @@ static int __devinit plat_nand_probe(str
 	}
 
 	/* Scan to find existance of the device */
-	if (nand_scan(&data->mtd, 1)) {
+	if (nand_scan_ident(&data->mtd, 1, NULL)) {
+		res = -ENXIO;
+		goto out;
+	}
+
+	if (pdata->chip.chip_fixup) {
+		res = pdata->chip.chip_fixup(&data->mtd);
+		if (res)
+			goto out;
+	}
+
+	if (nand_scan_tail(&data->mtd)) {
 		err = -ENXIO;
 		goto out;
 	}