-int slram_erase(struct mtd_info *, struct erase_info *);
-int slram_point(struct mtd_info *, loff_t, size_t, size_t *, u_char **);
-void slram_unpoint(struct mtd_info *, u_char *, loff_t, size_t);
-int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
-int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+static int slram_erase(struct mtd_info *, struct erase_info *);
+static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, u_char **);
+static void slram_unpoint(struct mtd_info *, u_char *, loff_t, size_t);
+static int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+static int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);