+ /* Try again to make sure, as some systems the bus-hold or other
+ * interface concerns can cause random data which looks like a
+ * possibly credible NAND flash to appear. If the two results do
+ * not match, ignore the device completely.
+ */
+
+ chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
+
+ /* Read manufacturer and device IDs */
+
+ tmp_manf = chip->read_byte(mtd);
+ tmp_id = chip->read_byte(mtd);
+
+ if (tmp_manf != *maf_id || tmp_id != dev_id) {
+ printk(KERN_INFO "%s: second ID read did not match "
+ "%02x,%02x against %02x,%02x\n", __func__,
+ *maf_id, dev_id, tmp_manf, tmp_id);
+ return ERR_PTR(-ENODEV);
+ }
+