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--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -595,7 +595,10 @@
/* Sanitize user input */
p.devname[BLKPG_DEVNAMELTH - 1] = '\0';
- return mtd_add_partition(mtd, p.devname, p.start, p.length);
+ /* No mtd flags masking required */
+ uint32_t mask_flags = 0;
+
+ return mtd_add_partition(mtd, p.devname, p.start, p.length, mask_flags);
case BLKPG_DEL_PARTITION:
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -726,7 +726,7 @@
}
int mtd_add_partition(struct mtd_info *parent, const char *name,
- long long offset, long long length)
+ long long offset, long long length, uint32_t mask_flags)
{
struct mtd_partition part;
struct mtd_part *new;
@@ -747,6 +747,7 @@
part.name = name;
part.size = length;
part.offset = offset;
+ part.mask_flags = mask_flags;
new = allocate_partition(parent, &part, -1, offset);
if (IS_ERR(new))
@@ -855,10 +856,14 @@
/* adjust partition offsets */
parts[i].offset += slave->offset;
+ /* adjust partition mask */
+ parts[i].mask_flags = !(slave->mtd.flags & MTD_WRITEABLE) ? MTD_WRITEABLE : 0;
+
mtd_add_partition(slave->parent,
parts[i].name,
parts[i].offset,
- parts[i].size);
+ parts[i].size,
+ parts[i].mask_flags);
}
kfree(parts);
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -114,7 +114,7 @@
int mtd_is_partition(const struct mtd_info *mtd);
int mtd_add_partition(struct mtd_info *master, const char *name,
- long long offset, long long length);
+ long long offset, long long length, uint32_t mask_flags);
int mtd_del_partition(struct mtd_info *master, int partno);
struct mtd_info *mtdpart_get_master(const struct mtd_info *mtd);
uint64_t mtdpart_get_offset(const struct mtd_info *mtd);
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