diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/401-mtd-add-support-for-different-partition-parser-types.patch')
-rw-r--r-- | target/linux/generic/pending-5.4/401-mtd-add-support-for-different-partition-parser-types.patch | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/target/linux/generic/pending-5.4/401-mtd-add-support-for-different-partition-parser-types.patch b/target/linux/generic/pending-5.4/401-mtd-add-support-for-different-partition-parser-types.patch deleted file mode 100644 index f471c62376..0000000000 --- a/target/linux/generic/pending-5.4/401-mtd-add-support-for-different-partition-parser-types.patch +++ /dev/null @@ -1,142 +0,0 @@ -From: Gabor Juhos <juhosg@openwrt.org> -Subject: 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 -@@ -41,6 +41,10 @@ struct mtd_part { - }; - - static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part); -+static 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); - - /* - * Given a pointer to the MTD object in the mtd_part structure, we can retrieve -@@ -703,6 +707,36 @@ int mtd_del_partition(struct mtd_info *m - } - EXPORT_SYMBOL_GPL(mtd_del_partition); - -+static int -+run_parsers_by_type(struct mtd_part *slave, enum mtd_parser_type type) -+{ -+ struct mtd_partition *parts; -+ int nr_parts; -+ int i; -+ -+ nr_parts = parse_mtd_partitions_by_type(&slave->mtd, type, (const struct mtd_partition **)&parts, -+ NULL); -+ if (nr_parts <= 0) -+ return nr_parts; -+ -+ if (WARN_ON(!parts)) -+ return 0; -+ -+ for (i = 0; i < nr_parts; i++) { -+ /* adjust partition offsets */ -+ parts[i].offset += slave->offset; -+ -+ mtd_add_partition(slave->parent, -+ parts[i].name, -+ parts[i].offset, -+ parts[i].size); -+ } -+ -+ kfree(parts); -+ -+ return nr_parts; -+} -+ - #ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME - #define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME - #else -@@ -1052,6 +1086,61 @@ 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; -+} -+ -+static 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; -+} -+ - 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 -@@ -73,6 +73,10 @@ 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; -@@ -81,6 +85,7 @@ 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 */ |