mtd: abstract last MTD partition parser argument

Encapsulate last MTD partition parser argument into a separate
structure. Currently it holds only 'origin' field for RedBoot parser,
but will be extended in future to contain at least device_node for OF
devices.

Amended commentary to make kerneldoc happy

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>

2 files changed, 15 insertions, 3 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index d28a241e7b55..b2b454b45cb5 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -323,13 +323,14 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
         /* Kernel-side ioctl definitions */
 
 struct mtd_partition;
+struct mtd_part_parser_data;
 
 extern int mtd_device_register(struct mtd_info *master,
                                const struct mtd_partition *parts,
                                int nr_parts);
 extern int mtd_device_parse_register(struct mtd_info *mtd,
                               const char **part_probe_types,
-                              unsigned long origin,
+                              struct mtd_part_parser_data *parser_data,
                               const struct mtd_partition *defparts,
                               int defnr_parts);
 extern int mtd_device_unregister(struct mtd_info *master);
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index 1431cf2609ed..5fdb963a5035 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -52,6 +52,15 @@ struct mtd_partition {
 
 struct mtd_info;
 
+/**
+ * struct mtd_part_parser_data - used to pass data to MTD partition parsers.
+ * @origin: for RedBoot, start address of MTD device
+ */
+struct mtd_part_parser_data {
+        unsigned long origin;
+};
+
+
 /*
  * Functions dealing with the various ways of partitioning the space
  */
@@ -60,13 +69,15 @@ struct mtd_part_parser {
         struct list_head list;
         struct module *owner;
         const char *name;
-        int (*parse_fn)(struct mtd_info *, struct mtd_partition **, unsigned long);
+        int (*parse_fn)(struct mtd_info *, struct mtd_partition **,
+                        struct mtd_part_parser_data *);
 };
 
 extern int register_mtd_parser(struct mtd_part_parser *parser);
 extern int deregister_mtd_parser(struct mtd_part_parser *parser);
 extern int parse_mtd_partitions(struct mtd_info *master, const char **types,
-                                struct mtd_partition **pparts, unsigned long origin);
+                                struct mtd_partition **pparts,
+                                struct mtd_part_parser_data *data);
 
 #define put_partition_parser(p) do { module_put((p)->owner); } while(0)