+/*
+ * Read oob data from flash
+ */
+int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+ size_t *retlen, uint8_t *buf)
+{
+ struct mtd_oob_ops ops;
+ int res;
+
+ ops.mode = MTD_OOB_PLACE;
+ ops.ooboffs = offs & (mtd->writesize - 1);
+ ops.ooblen = len;
+ ops.oobbuf = buf;
+ ops.datbuf = NULL;
+
+ res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+ *retlen = ops.oobretlen;
+ return res;
+}
+
+/*
+ * Write oob data to flash
+ */
+int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+ size_t *retlen, uint8_t *buf)
+{
+ struct mtd_oob_ops ops;
+ int res;
+
+ ops.mode = MTD_OOB_PLACE;
+ ops.ooboffs = offs & (mtd->writesize - 1);
+ ops.ooblen = len;
+ ops.oobbuf = buf;
+ ops.datbuf = NULL;
+
+ res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+ *retlen = ops.oobretlen;
+ return res;
+}
+