--- zzzz-none-000/linux-4.9.279/drivers/mtd/ubi/wl.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-arm-6591-750/linux-4.9.279/drivers/mtd/ubi/wl.c	2023-02-08 10:58:13.000000000 +0000
@@ -19,6 +19,11 @@
  */
 
 /*
+ * Includes Intel Corporation's changes/modifications dated: 2017.
+ * Changed/modified portions - Copyright (c) 2017, Intel Corporation.
+ */
+
+/*
  * UBI wear-leveling sub-system.
  *
  * This sub-system is responsible for wear-leveling. It works in terms of
@@ -135,11 +140,17 @@
  */
 #define WL_MAX_FAILURES 32
 
+#ifdef CONFIG_MTD_UBI_DEBUG
 static int self_check_ec(struct ubi_device *ubi, int pnum, int ec);
 static int self_check_in_wl_tree(const struct ubi_device *ubi,
 				 struct ubi_wl_entry *e, struct rb_root *root);
 static int self_check_in_pq(const struct ubi_device *ubi,
 			    struct ubi_wl_entry *e);
+#else
+#define self_check_ec(ubi, pnum, ec) 0
+#define self_check_in_wl_tree(ubi, e, root)
+#define self_check_in_pq(ubi, e) 0
+#endif
 
 /**
  * wl_tree_add - add a wear-leveling entry to a WL RB-tree.
@@ -1782,6 +1793,8 @@
 	kfree(ubi->lookuptbl);
 }
 
+#ifdef CONFIG_MTD_UBI_DEBUG
+
 /**
  * self_check_ec - make sure that the erase counter of a PEB is correct.
  * @ubi: UBI device description object