1 From: Gabor Juhos <juhosg@openwrt.org>
2 Subject: mtd: add support for different partition parser types
4 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
6 drivers/mtd/mtdpart.c | 56 ++++++++++++++++++++++++++++++++++++++++
7 include/linux/mtd/partitions.h | 11 ++++++++
8 2 files changed, 67 insertions(+)
10 --- a/drivers/mtd/mtdpart.c
11 +++ b/drivers/mtd/mtdpart.c
12 @@ -56,6 +56,10 @@ struct mtd_part {
15 static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part);
16 +static int parse_mtd_partitions_by_type(struct mtd_info *master,
17 + enum mtd_parser_type type,
18 + const struct mtd_partition **pparts,
19 + struct mtd_part_parser_data *data);
22 * Given a pointer to the MTD object in the mtd_part structure, we can retrieve
23 @@ -1115,6 +1119,61 @@ void mtd_part_parser_cleanup(struct mtd_
27 +static struct mtd_part_parser *
28 +get_partition_parser_by_type(enum mtd_parser_type type,
29 + struct mtd_part_parser *start)
31 + struct mtd_part_parser *p, *ret = NULL;
33 + spin_lock(&part_parser_lock);
35 + p = list_prepare_entry(start, &part_parsers, list);
37 + mtd_part_parser_put(start);
39 + list_for_each_entry_continue(p, &part_parsers, list) {
40 + if (p->type == type && try_module_get(p->owner)) {
46 + spin_unlock(&part_parser_lock);
51 +static int parse_mtd_partitions_by_type(struct mtd_info *master,
52 + enum mtd_parser_type type,
53 + const struct mtd_partition **pparts,
54 + struct mtd_part_parser_data *data)
56 + struct mtd_part_parser *prev = NULL;
60 + struct mtd_part_parser *parser;
62 + parser = get_partition_parser_by_type(type, prev);
66 + ret = (*parser->parse_fn)(master, pparts, data);
69 + mtd_part_parser_put(parser);
71 + "%d %s partitions found on MTD device %s\n",
72 + ret, parser->name, master->name);
82 int mtd_is_partition(const struct mtd_info *mtd)
84 struct mtd_part *part;
85 --- a/include/linux/mtd/partitions.h
86 +++ b/include/linux/mtd/partitions.h
87 @@ -73,6 +73,10 @@ struct mtd_part_parser_data {
88 * Functions dealing with the various ways of partitioning the space
91 +enum mtd_parser_type {
92 + MTD_PARSER_TYPE_DEVICE = 0,
95 struct mtd_part_parser {
96 struct list_head list;
98 @@ -81,6 +85,7 @@ struct mtd_part_parser {
99 int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
100 struct mtd_part_parser_data *);
101 void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
102 + enum mtd_parser_type type;
105 /* Container for passing around a set of parsed partitions */