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>
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@ -209,7 +209,6 @@ static void block2mtd_free_device(struct block2mtd_dev *dev)
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}
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/* FIXME: ensure that mtd->size % erase_size == 0 */
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static struct block2mtd_dev *add_device(char *devname, int erase_size)
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{
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const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
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@ -249,6 +248,11 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
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goto err_free_block2mtd;
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}
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if ((long)dev->blkdev->bd_inode->i_size % erase_size) {
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pr_err("erasesize must be a divisor of device size\n");
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goto err_free_block2mtd;
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}
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mutex_init(&dev->write_mutex);
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/* Setup the MTD structure */
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