diff options
Diffstat (limited to 'drivers/mtd/mtdconcat.c')
| -rw-r--r-- | drivers/mtd/mtdconcat.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index c9785f96070e..170a7221b35f 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -485,6 +485,28 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) return concat_xxlock(mtd, ofs, len, false); } +static int concat_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct mtd_concat *concat = CONCAT(mtd); + int i, err = -EINVAL; + + for (i = 0; i < concat->num_subdev; i++) { + struct mtd_info *subdev = concat->subdev[i]; + + if (ofs >= subdev->size) { + ofs -= subdev->size; + continue; + } + + if (ofs + len > subdev->size) + break; + + return mtd_is_locked(subdev, ofs, len); + } + + return err; +} + static void concat_sync(struct mtd_info *mtd) { struct mtd_concat *concat = CONCAT(mtd); @@ -684,6 +706,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->mtd._sync = concat_sync; concat->mtd._lock = concat_lock; concat->mtd._unlock = concat_unlock; + concat->mtd._is_locked = concat_is_locked; concat->mtd._suspend = concat_suspend; concat->mtd._resume = concat_resume; |