From: Florian Fainelli <florian@openwrt.org>
Date: Sat, 12 Jun 2010 18:59:25 +0000 (+0200)
Subject: NAND: show manufacturer and device ID for unknown chips
X-Git-Tag: v2010.09-rc1~82^2~9
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=3e9b349c7f0873a38d7064be52b9d8cc0afae28f;p=oweals%2Fu-boot.git

NAND: show manufacturer and device ID for unknown chips

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>
Signed-off-by: Scott Wood <scottwood@freescale.com>
---

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7171bdd51b..ed1c9c9a88 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;