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| author | Fabian Frederick <fabf@skynet.be> | 2014-03-06 14:04:22 +0400 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-03-11 09:42:31 +0400 |
| commit | ea6d833a3fddcd1d60414d48f34c7f4fbe88608f (patch) | |
| tree | 5a1bfbc1fbe161975ff3887d4625c8ab78bbf815 | |
| parent | 90445ff6241e2a13445310803e2efa606c61f276 (diff) | |
| download | linux-ea6d833a3fddcd1d60414d48f34c7f4fbe88608f.tar.xz | |
mtd: block2mtd: check device size
fixme applied : check device size is a multiple of erasesize.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| -rw-r--r-- | drivers/mtd/devices/block2mtd.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 3e12234b7565..66f0405f7e53 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -209,7 +209,6 @@ static void block2mtd_free_device(struct block2mtd_dev *dev) } -/* FIXME: ensure that mtd->size % erase_size == 0 */ static struct block2mtd_dev *add_device(char *devname, int erase_size) { const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL; @@ -249,6 +248,11 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) goto err_free_block2mtd; } + if ((long)dev->blkdev->bd_inode->i_size % erase_size) { + pr_err("erasesize must be a divisor of device size\n"); + goto err_free_block2mtd; + } + mutex_init(&dev->write_mutex); /* Setup the MTD structure */ |