diff options
| -rw-r--r-- | drivers/mtd/partition.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/partition.c b/drivers/mtd/partition.c index 9b2b20ef5d..e393fa68f8 100644 --- a/drivers/mtd/partition.c +++ b/drivers/mtd/partition.c @@ -51,6 +51,9 @@ static int mtd_part_erase(struct mtd_info *mtd, struct erase_info *instr) static int mtd_part_lock(struct mtd_info *mtd, loff_t offset, size_t len) { + if (!mtd->master->lock) + return -ENOSYS; + if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; @@ -64,6 +67,9 @@ static int mtd_part_lock(struct mtd_info *mtd, loff_t offset, size_t len) static int mtd_part_unlock(struct mtd_info *mtd, loff_t offset, size_t len) { + if (!mtd->master->unlock) + return -ENOSYS; + if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; |