From: Fabian Frederick <fabf@skynet.be>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: computersforpeace <computersforpeace@gmail.com>,
"ezequiel.garcia" <ezequiel.garcia@free-electrons.com>
Subject: [PATCH v2 linux-next] mtd: block2mtd: check device size
Date: Thu, 6 Mar 2014 18:04:22 +0800 [thread overview]
Message-ID: <20140306180422.4e27ae82f646e0e669f69cbb@skynet.be> (raw)
fixme applied : check device size is a multiple of erasesize.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
drivers/mtd/devices/block2mtd.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 3e12234..66f0405 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 */
--
1.8.1.4
next reply other threads:[~2014-03-06 18:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-06 10:04 Fabian Frederick [this message]
2014-03-09 4:50 ` Brian Norris
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