[PATCH] pktcdvd: Don't unlock the door if the disc is in use

Unlocking the door when the disc is in use is obviously not good, because then
it's possible to eject the disc at the wrong time and cause severe disc data
corruption.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index edf6bf29002edc9d127df1a17b64835e895d115a..89d8fe014efaeace444a0a6c89dbe97b48a83260 100644 (file)
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2435,7 +2435,8 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
                 * The door gets locked when the device is opened, so we
                 * have to unlock it or else the eject command fails.
                 */
-               pkt_lock_door(pd, 0);
+               if (pd->refcnt == 1)
+                       pkt_lock_door(pd, 0);
                return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
 
        default: