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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>
This commit is contained in:
Dmitry Eremin-Solenikov 2011-05-29 21:32:33 +04:00 committed by Artem Bityutskiy
parent c797533015
commit d26c87d64e
3 changed files with 35 additions and 5 deletions
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8
drivers/mtd/mtdpart.c
View File

@ -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

27
drivers/mtd/ofpart.c
View File

@ -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");

5
include/linux/mtd/partitions.h
View File

@ -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