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kernel: backport upstream mtdpart.c cleanups

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Except for renames and line changes the only conflict was in
allocate_partition in handling MTD_WRITEABLE. Hopefully it was handled
correctly.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
2017-06-23 10:27:20 +02:00
parent 4052443a23
commit 8c1e760ab6
15 changed files with 1094 additions and 54 deletions
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12
target/linux/generic/patches-4.9/400-mtd-add-rootfs-split-support.patch
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@@ -39,7 +39,7 @@
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
@@ -46,6 +48,8 @@ struct mtd_part {
@@ -52,6 +54,8 @@ struct mtd_part {
struct list_head list;
};
@@ -48,15 +48,15 @@
/*
* Given a pointer to the MTD object in the mtd_part structure, we can retrieve
* the pointer to that structure.
@@ -650,6 +654,7 @@ int mtd_add_partition(struct mtd_info *m
@@ -649,6 +653,7 @@ int mtd_add_partition(struct mtd_info *p
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&new->mtd);
+ mtd_partition_split(master, new);
+ mtd_partition_split(parent, new);
mtd_add_partition_attrs(new);
@@ -682,6 +687,35 @@ int mtd_del_partition(struct mtd_info *m
@@ -718,6 +723,35 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@@ -92,7 +92,7 @@
/*
* This function, given a master MTD object and a partition table, creates
* and registers slave MTD objects which are bound to the master according to
@@ -713,6 +747,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -749,6 +783,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);
@@ -102,7 +102,7 @@
cur_offset = slave->offset + slave->mtd.size;
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -101,5 +101,7 @@ int mtd_add_partition(struct mtd_info *m
@@ -102,5 +102,7 @@ int mtd_add_partition(struct mtd_info *m
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);
uint64_t mtd_get_device_size(const struct mtd_info *mtd);