--- zzzz-none-000/linux-4.9.279/drivers/mtd/ubi/debug.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/drivers/mtd/ubi/debug.h	2023-02-08 11:43:42.000000000 +0000
@@ -25,6 +25,7 @@
 void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
 void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
 
+#ifdef CONFIG_MTD_UBI_DEBUG
 #include <linux/random.h>
 
 #define ubi_assert(expr)  do {                                               \
@@ -118,6 +119,75 @@
 	return 0;
 }
 
+#else
+
+/* Use "if (0)" to make compiler check arguments even if debugging is off */
+#define ubi_assert(expr)  do {                                               \
+       if (0) {                                                             \
+               printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
+                      __func__, __LINE__, current->pid);                    \
+       }                                                                    \
+} while (0)
+
+#define dbg_err(fmt, ...) do {                                               \
+       if (0)                                                               \
+               ubi_err(fmt, ##__VA_ARGS__);                                 \
+} while (0)
+
+#define ubi_dbg_msg(fmt, ...) do {                                           \
+       if (0)                                                               \
+               printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__);                  \
+} while (0)
+
+#define dbg_msg(fmt, ...)  ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_gen(fmt, ...)  ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_eba(fmt, ...)  ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_wl(fmt, ...)   ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_io(fmt, ...)   ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_bld(fmt, ...)  ubi_dbg_msg(fmt, ##__VA_ARGS__)
+
+static inline void
+ubi_dump_vol_info(const struct ubi_volume *vol)                      { return; }
+static inline void
+ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)       { return; }
+static inline void ubi_dump_sv(const struct ubi_scan_volume *sv)     { return; }
+static inline void ubi_dump_seb(const struct ubi_scan_leb *seb,
+                               int type)                             { return; }
+static inline void
+ubi_dump_mkvol_req(const struct ubi_mkvol_req *req)                  { return; }
+static inline void
+ubi_dbg_print_hex_dump(const char *l, const char *ps, int pt, int r,
+                      int g, const void *b, size_t len, bool a)      { return; }
+static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
+                                      int pnum, int offset,
+                                      int len)                       { return 0; }
+static inline int ubi_dbg_check_write(struct ubi_device *ubi,
+                                     const void *buf, int pnum,
+                                     int offset, int len)            { return 0; }
+
+static inline int ubi_debugging_init_dev(struct ubi_device *ubi)     { return 0; }
+static inline void ubi_debugging_exit_dev(struct ubi_device *ubi)    { return; }
+static inline int ubi_debugfs_init(void)                             { return 0; }
+static inline void ubi_debugfs_exit(void)                            { return; }
+static inline int ubi_debugfs_init_dev(struct ubi_device *ubi)       { return 0; }
+static inline void ubi_debugfs_exit_dev(struct ubi_device *ubi)      { return; }
+
+static inline int
+ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)                { return 0; }
+static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)   { return 0; }
+static inline int
+ubi_dbg_is_write_failure(const struct ubi_device *ubi)               { return 0; }
+static inline int
+ubi_dbg_is_erase_failure(const struct ubi_device *ubi)               { return 0; }
+static inline int ubi_self_check_all_ff(struct ubi_device *ubi,
+                                        int pnum, int offset,
+                                        int len)                     { return 0; }
+static inline void ubi_dump_aeb(const struct ubi_ainf_peb *aeb,
+                                int type)                            { return; }
+static void ubi_dump_av(const struct ubi_ainf_volume *av)            { return; }
+
+#endif /* !CONFIG_MTD_UBI_DEBUG */
+
 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi)
 {
 	return ubi->dbg.chk_io;