From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Fainelli <florian@openwrt.org>
Date: Sat, 12 Jun 2010 20:59:25 +0200
Subject: [U-Boot] [PATCH 1/2] NAND: show manufacturer and device ID for
	unknown chips
Message-ID: <201006122059.26701.ffainelli@freebox.fr>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

When the NAND part is not supported, it is useful to show the manufacturer
and device ID to help debugging and reporting.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7171bdd..c1657de 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2652,8 +2652,12 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 		}
 	}
 
-	if (!type)
+	if (!type) {
+		printk(KERN_INFO "%s: unknown NAND device: Manufacturer ID :"
+				" 0x%02x, Chip ID: 0x%02x\n", __func__,
+				*maf_id, dev_id);
 		return ERR_PTR(-ENODEV);
+	}
 
 	if (!mtd->name)
 		mtd->name = type->name;