target/linux/ar71xx/patches-3.3/a05-ar934x_nfc-add-buffer-verification.patch

   1 --- a/drivers/mtd/nand/ar934x_nfc.c
   2 +++ b/drivers/mtd/nand/ar934x_nfc.c
   3 @@ -762,6 +762,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
   4         nfc->buf_index = buf_index;
   5  }
   6
   7 +static int
   8 +ar934x_nfc_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
   9 +{
  10 +       int i;
  11 +
  12 +       for (i = 0; i < len; i++)
  13 +               if (buf[i] != ar934x_nfc_read_byte(mtd))
  14 +                       return -EFAULT;
  15 +
  16 +       return 0;
  17 +}
  18 +
  19  static void
  20  ar934x_nfc_hw_init(struct ar934x_nfc *nfc)
  21  {
  22 @@ -1048,6 +1060,7 @@ ar934x_nfc_probe(struct platform_device
  23         nand->read_byte = ar934x_nfc_read_byte;
  24         nand->write_buf = ar934x_nfc_write_buf;
  25         nand->read_buf = ar934x_nfc_read_buf;
  26 +       nand->verify_buf = ar934x_nfc_verify_buf;
  27         nand->select_chip = ar934x_nfc_select_chip;
  28
  29         ret = ar934x_nfc_alloc_buf(nfc, AR934X_NFC_ID_BUF_SIZE);