openwrtv3/target/linux/ar71xx/patches-3.3/a05-ar934x_nfc-add-buffer-verification.patch

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--- 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);