kernel/3.10: allow to use partition parsers for rootfs and firmware split

Signed-off-by: Gabor Juhos <[email protected]>

SVN-Revision: 38108

target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch

@@ -0,0 +1,75 @@
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -627,6 +627,37 @@ 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, &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->master,
++				    parts[i].name,
++				    parts[i].offset,
++				    parts[i].size,
++				    false);
++	}
++
++	kfree(parts);
++
++	return nr_parts;
++}
++
+ static inline unsigned long
+ mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
+ {
+@@ -686,6 +717,10 @@ static void split_rootfs_data(struct mtd
+ 	unsigned int split_size;
+ 	int ret;
+ 
++	ret = run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
++	if (ret > 0)
++		return;
++
+ 	ret = split_squashfs(master, part->offset, &split_offset);
+ 	if (ret)
+ 		return;
+@@ -735,6 +770,12 @@ static void split_uimage(struct mtd_info
+ 
+ static void split_firmware(struct mtd_info *master, struct mtd_part *part)
+ {
++	int ret;
++
++	ret = run_parsers_by_type(part, MTD_PARSER_TYPE_FIRMWARE);
++	if (ret > 0)
++		return;
++
+ 	if (config_enabled(CONFIG_MTD_UIMAGE_SPLIT))
+ 		split_uimage(master, part);
+ }
+--- a/include/linux/mtd/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -70,6 +70,8 @@ struct mtd_part_parser_data {
+ 
+ enum mtd_parser_type {
+ 	MTD_PARSER_TYPE_DEVICE = 0,
++	MTD_PARSER_TYPE_ROOTFS,
++	MTD_PARSER_TYPE_FIRMWARE,
+ };
+ 
+ struct mtd_part_parser {