diff options
| author | Richard Cochran <richardcochran@gmail.com> | 2010-06-14 18:10:33 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-08-02 09:03:41 +0100 |
| commit | 9938424f0c4d208883cbf32083ec2bfcc220f85b (patch) | |
| tree | e4f7581c7543673fe63c98f9804e934a77aeb7ef /drivers/mtd/mtdpart.c | |
| parent | 1df620637fc3b252b69c92ced486b5b6b643dd1a (diff) | |
| download | lwn-9938424f0c4d208883cbf32083ec2bfcc220f85b.tar.gz lwn-9938424f0c4d208883cbf32083ec2bfcc220f85b.zip | |
mtd: add an ioctl to query the lock status of a flash sector
This patchs adds a way for user space programs to find out whether a
flash sector is locked. An optional driver method in the mtd_info struct
provides the information.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/mtdpart.c')
| -rw-r--r-- | drivers/mtd/mtdpart.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index b8043a9ba32d..4c539ded0b70 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -264,6 +264,14 @@ static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) return part->master->unlock(part->master, ofs + part->offset, len); } +static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct mtd_part *part = PART(mtd); + if ((len + ofs) > mtd->size) + return -EINVAL; + return part->master->is_locked(part->master, ofs + part->offset, len); +} + static void part_sync(struct mtd_info *mtd) { struct mtd_part *part = PART(mtd); @@ -402,6 +410,8 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, slave->mtd.lock = part_lock; if (master->unlock) slave->mtd.unlock = part_unlock; + if (master->is_locked) + slave->mtd.is_locked = part_is_locked; if (master->block_isbad) slave->mtd.block_isbad = part_block_isbad; if (master->block_markbad) |