diff options
Diffstat (limited to 'target/linux/generic/patches-4.9/401-mtd-add-support-for-different-partition-parser-types.patch')
-rw-r--r-- | target/linux/generic/patches-4.9/401-mtd-add-support-for-different-partition-parser-types.patch | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/401-mtd-add-support-for-different-partition-parser-types.patch b/target/linux/generic/patches-4.9/401-mtd-add-support-for-different-partition-parser-types.patch new file mode 100644 index 0000000000..a5e1fd7edb --- /dev/null +++ b/target/linux/generic/patches-4.9/401-mtd-add-support-for-different-partition-parser-types.patch @@ -0,0 +1,112 @@ +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 +@@ -945,6 +945,62 @@ void mtd_part_parser_cleanup(struct mtd_ + } + } + ++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) ++ mtd_part_parser_put(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; ++} ++ ++int parse_mtd_partitions_by_type(struct mtd_info *master, ++ enum mtd_parser_type type, ++ const 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) { ++ mtd_part_parser_put(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 +@@ -60,11 +60,14 @@ struct mtd_part_parser_data { + unsigned long origin; + }; + +- + /* + * 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; +@@ -72,6 +75,7 @@ struct mtd_part_parser { + int (*parse_fn)(struct mtd_info *, const struct mtd_partition **, + struct mtd_part_parser_data *); + void (*cleanup)(const struct mtd_partition *pparts, int nr_parts); ++ enum mtd_parser_type type; + }; + + /* Container for passing around a set of parsed partitions */ +@@ -104,4 +108,9 @@ 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, ++ const struct mtd_partition **pparts, ++ struct mtd_part_parser_data *data); ++ + #endif |