diff options
Diffstat (limited to 'drivers/block/pktcdvd.c')
| -rw-r--r-- | drivers/block/pktcdvd.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index b9a6b7ad64f3..bc56770bcc90 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2021,7 +2021,13 @@ static int pkt_open(struct inode *inode, struct file *file) BUG_ON(pd->refcnt < 0); pd->refcnt++; - if (pd->refcnt == 1) { + if (pd->refcnt > 1) { + if ((file->f_mode & FMODE_WRITE) && + !test_bit(PACKET_WRITABLE, &pd->flags)) { + ret = -EBUSY; + goto out_dec; + } + } else { if (pkt_open_dev(pd, file->f_mode & FMODE_WRITE)) { ret = -EIO; goto out_dec; |