diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7171bdd51..ed1c9c9a8 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;