diff options
Diffstat (limited to 'target/linux/generic/patches-4.3/401-mtd-add-support-for-different-partition-parser-types.patch')
| -rw-r--r-- | target/linux/generic/patches-4.3/401-mtd-add-support-for-different-partition-parser-types.patch | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.3/401-mtd-add-support-for-different-partition-parser-types.patch b/target/linux/generic/patches-4.3/401-mtd-add-support-for-different-partition-parser-types.patch new file mode 100644 index 0000000..ed09c2d --- /dev/null +++ b/target/linux/generic/patches-4.3/401-mtd-add-support-for-different-partition-parser-types.patch @@ -0,0 +1,113 @@ +From 02cff0ccaa6d364f5c1eeea83f47ac80ccc967d4 Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Tue, 3 Sep 2013 18:11:50 +0200 +Subject: [PATCH] mtd: add support for different partition parser types + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- + drivers/mtd/mtdpart.c | 56 ++++++++++++++++++++++++++++++++++++++++ + include/linux/mtd/partitions.h | 11 ++++++++ + 2 files changed, 67 insertions(+) + +--- a/drivers/mtd/mtdpart.c ++++ b/drivers/mtd/mtdpart.c +@@ -745,6 +745,30 @@ static struct mtd_part_parser *get_parti + + #define put_partition_parser(p) do { module_put((p)->owner); } while (0) + ++static struct mtd_part_parser * ++get_partition_parser_by_type(enum mtd_parser_type type, ++ struct mtd_part_parser *start) ++{ ++ struct mtd_part_parser *p, *ret = NULL; ++ ++ spin_lock(&part_parser_lock); ++ ++ p = list_prepare_entry(start, &part_parsers, list); ++ if (start) ++ put_partition_parser(start); ++ ++ list_for_each_entry_continue(p, &part_parsers, list) { ++ if (p->type == type && try_module_get(p->owner)) { ++ ret = p; ++ break; ++ } ++ } ++ ++ spin_unlock(&part_parser_lock); ++ ++ return ret; ++} ++ + void register_mtd_parser(struct mtd_part_parser *p) + { + spin_lock(&part_parser_lock); +@@ -862,6 +886,38 @@ int parse_mtd_partitions(struct mtd_info + return ret; + } + ++int parse_mtd_partitions_by_type(struct mtd_info *master, ++ enum mtd_parser_type type, ++ struct mtd_partition **pparts, ++ struct mtd_part_parser_data *data) ++{ ++ struct mtd_part_parser *prev = NULL; ++ int ret = 0; ++ ++ while (1) { ++ struct mtd_part_parser *parser; ++ ++ parser = get_partition_parser_by_type(type, prev); ++ if (!parser) ++ break; ++ ++ ret = (*parser->parse_fn)(master, pparts, data); ++ ++ if (ret > 0) { ++ put_partition_parser(parser); ++ printk(KERN_NOTICE ++ "%d %s partitions found on MTD device %s\n", ++ ret, parser->name, master->name); ++ break; ++ } ++ ++ prev = parser; ++ } ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(parse_mtd_partitions_by_type); ++ + int mtd_is_partition(const struct mtd_info *mtd) + { + struct mtd_part *part; +--- a/include/linux/mtd/partitions.h ++++ b/include/linux/mtd/partitions.h +@@ -68,12 +68,17 @@ struct mtd_part_parser_data { + * Functions dealing with the various ways of partitioning the space + */ + ++enum mtd_parser_type { ++ MTD_PARSER_TYPE_DEVICE = 0, ++}; ++ + struct mtd_part_parser { + struct list_head list; + struct module *owner; + const char *name; + int (*parse_fn)(struct mtd_info *, struct mtd_partition **, + struct mtd_part_parser_data *); ++ enum mtd_parser_type type; + }; + + extern void register_mtd_parser(struct mtd_part_parser *parser); +@@ -87,4 +92,9 @@ uint64_t mtd_get_device_size(const struc + extern void __weak arch_split_mtd_part(struct mtd_info *master, + const char *name, int offset, int size); + ++int parse_mtd_partitions_by_type(struct mtd_info *master, ++ enum mtd_parser_type type, ++ struct mtd_partition **pparts, ++ struct mtd_part_parser_data *data); ++ + #endif |