[PATCH 3/4] pktcdvd: Don't unlock the door if the disc is in use

[Peter Osterlund <petero2@telia.com>]

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>
---

 drivers/block/pktcdvd.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index d747f28..d794f2b 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2436,7 +2436,8 @@ static int pkt_ioctl(struct inode *inode
 		 * 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:

-- 
Peter Osterlund - petero2@telia.com
http://web.telia.com/~u89404340
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