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mtd: block2mtd: check device size

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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>
This commit is contained in:
Fabian Frederick 2014-03-06 18:04:22 +08:00 committed by Brian Norris
parent 90445ff624
commit ea6d833a3f
1 changed files with 5 additions and 1 deletions
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6
drivers/mtd/devices/block2mtd.c
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@ -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 */