--- zzzz-none-000/linux-3.10.107/include/linux/of_mtd.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/of_mtd.h	2021-02-04 17:41:59.000000000 +0000
@@ -7,13 +7,44 @@
  */
 
 #ifndef __LINUX_OF_MTD_H
-#define __LINUX_OF_NET_H
+#define __LINUX_OF_MTD_H
 
 #ifdef CONFIG_OF_MTD
+
 #include <linux/of.h>
 int of_get_nand_ecc_mode(struct device_node *np);
+int of_get_nand_ecc_step_size(struct device_node *np);
+int of_get_nand_ecc_strength(struct device_node *np);
 int of_get_nand_bus_width(struct device_node *np);
 bool of_get_nand_on_flash_bbt(struct device_node *np);
-#endif
+
+#else /* CONFIG_OF_MTD */
+
+static inline int of_get_nand_ecc_mode(struct device_node *np)
+{
+	return -ENOSYS;
+}
+
+static inline int of_get_nand_ecc_step_size(struct device_node *np)
+{
+	return -ENOSYS;
+}
+
+static inline int of_get_nand_ecc_strength(struct device_node *np)
+{
+	return -ENOSYS;
+}
+
+static inline int of_get_nand_bus_width(struct device_node *np)
+{
+	return -ENOSYS;
+}
+
+static inline bool of_get_nand_on_flash_bbt(struct device_node *np)
+{
+	return false;
+}
+
+#endif /* CONFIG_OF_MTD */
 
 #endif /* __LINUX_OF_MTD_H */