+--- a/drivers/mtd/nand/ar934x_nfc.c
++++ b/drivers/mtd/nand/ar934x_nfc.c
+@@ -762,6 +762,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
+ nfc->buf_index = buf_index;
+ }
+
++static int
++ar934x_nfc_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
++{
++ int i;
++
++ for (i = 0; i < len; i++)
++ if (buf[i] != ar934x_nfc_read_byte(mtd))
++ return -EFAULT;
++
++ return 0;
++}
++
+ static void
+ ar934x_nfc_hw_init(struct ar934x_nfc *nfc)
+ {
+@@ -1048,6 +1060,7 @@ ar934x_nfc_probe(struct platform_device
+ nand->read_byte = ar934x_nfc_read_byte;
+ nand->write_buf = ar934x_nfc_write_buf;
+ nand->read_buf = ar934x_nfc_read_buf;
++ nand->verify_buf = ar934x_nfc_verify_buf;
+ nand->select_chip = ar934x_nfc_select_chip;
+
+ ret = ar934x_nfc_alloc_buf(nfc, AR934X_NFC_ID_BUF_SIZE);