mtd: prepare to convert of_mtd_parse_partitions to partition parser

Prepare to convert of_mtd_parse_partitions() to usual partitions parser:
1) Register ofpart parser
2) Internally don't use passed device for error printing
3) Add device_node to mtd_part_parser_data struct
4) Move of_mtd_parse_partitions from __devinit to common text section
5) add ofpart to the default list of partition parsers

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

3 files changed, 35 insertions, 5 deletions

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 34d582c2bdf3..9e8ee054135a 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -729,7 +729,11 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
  * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
  * are changing this array!
  */
-static const char *default_mtd_part_types[] = {"cmdlinepart", NULL};
+static const char *default_mtd_part_types[] = {
+        "cmdlinepart",
+        "ofpart",
+        NULL
+};
 
 /**
  * parse_mtd_partitions - parse MTD partitions
@@ -741,7 +745,7 @@ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL};
  * This function tries to find partition on MTD device @master. It uses MTD
  * partition parsers, specified in @types. However, if @types is %NULL, then
  * the default list of parsers is used. The default list contains only the
- * "cmdlinepart" parser ATM.
+ * "cmdlinepart" and "ofpart" parsers ATM.
  *
  * This function may return:
  * o a negative error code in case of failure
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index a996718fa6b0..7c2c926e0bd7 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -20,7 +20,17 @@
 #include <linux/slab.h>
 #include <linux/mtd/partitions.h>
 
-int __devinit of_mtd_parse_partitions(struct device *dev,
+static int parse_ofpart_partitions(struct mtd_info *master,
+                                   struct mtd_partition **pparts,
+                                   struct mtd_part_parser_data *data)
+{
+        if (!data || !data->of_node)
+                return 0;
+
+        return of_mtd_parse_partitions(NULL, data->of_node, pparts);
+}
+
+int of_mtd_parse_partitions(struct device *dev,
                                       struct device_node *node,
                                       struct mtd_partition **pparts)
 {
@@ -69,7 +79,7 @@ int __devinit of_mtd_parse_partitions(struct device *dev,
 
         if (!i) {
                 of_node_put(pp);
-                dev_err(dev, "No valid partition found on %s\n", node->full_name);
+                pr_err("No valid partition found on %s\n", node->full_name);
                 kfree(*pparts);
                 *pparts = NULL;
                 return -EINVAL;
@@ -79,4 +89,17 @@ int __devinit of_mtd_parse_partitions(struct device *dev,
 }
 EXPORT_SYMBOL(of_mtd_parse_partitions);
 
+static struct mtd_part_parser ofpart_parser = {
+        .owner = THIS_MODULE,
+        .parse_fn = parse_ofpart_partitions,
+        .name = "ofpart",
+};
+
+static int __init ofpart_parser_init(void)
+{
+        return register_mtd_parser(&ofpart_parser);
+}
+
+module_init(ofpart_parser_init);
+
 MODULE_LICENSE("GPL");
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index 5fdb963a5035..ec60fd14670c 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -51,13 +51,16 @@ struct mtd_partition {
 
 
 struct mtd_info;
+struct device_node;
 
 /**
  * struct mtd_part_parser_data - used to pass data to MTD partition parsers.
  * @origin: for RedBoot, start address of MTD device
+ * @of_node: for OF parsers, device node containing partitioning information
  */
 struct mtd_part_parser_data {
         unsigned long origin;
+        struct device_node *of_node;
 };
 
 
@@ -85,7 +88,7 @@ struct device;
 struct device_node;
 
 #ifdef CONFIG_MTD_OF_PARTS
-int __devinit of_mtd_parse_partitions(struct device *dev,
+int of_mtd_parse_partitions(struct device *dev,
                                       struct device_node *node,
                                       struct mtd_partition **pparts);
 #else