| 1 | --- a/drivers/mtd/mtdpart.c |
| 2 | +++ b/drivers/mtd/mtdpart.c |
| 3 | @@ -356,7 +356,14 @@ static int part_unlock(struct mtd_info * |
| 4 | struct mtd_part *part = PART(mtd); |
| 5 | if ((len + ofs) > mtd->size) |
| 6 | return -EINVAL; |
| 7 | - return mtd_unlock(part->master, ofs + part->offset, len); |
| 8 | + |
| 9 | + ofs += part->offset; |
| 10 | + if (mtd->flags & MTD_ERASE_PARTIAL) { |
| 11 | + /* round up len to next erasesize and round down offset to prev block */ |
| 12 | + len = (mtd_div_by_eb(len, part->master) + 1) * part->master->erasesize; |
| 13 | + ofs &= ~(part->master->erasesize - 1); |
| 14 | + } |
| 15 | + return mtd_unlock(part->master, ofs, len); |
| 16 | } |
| 17 | |
| 18 | static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
| 19 | |
