1 files changed, 12 insertions, 4 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 1a1fa3ccb913..bc56770bcc90 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -914,8 +914,10 @@ static int pkt_handle_queue(struct pktcdvd_device *pd)
                 bio = node->bio;
                 zone = ZONE(bio->bi_sector, pd);
                 list_for_each_entry(p, &pd->cdrw.pkt_active_list, list) {
-                        if (p->sector == zone)
+                        if (p->sector == zone) {
+                                bio = NULL;
                                 goto try_next_bio;
+                        }
                 }
                 break;
 try_next_bio:
@@ -2019,7 +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;
@@ -2406,7 +2414,7 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
         case CDROM_LAST_WRITTEN:
         case CDROM_SEND_PACKET:
         case SCSI_IOCTL_SEND_COMMAND:
-                return ioctl_by_bdev(pd->bdev, cmd, arg);
+                return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
 
         case CDROMEJECT:
                 /*
@@ -2414,7 +2422,7 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
                  * have to unlock it or else the eject command fails.
                  */
                 pkt_lock_door(pd, 0);
-                return ioctl_by_bdev(pd->bdev, cmd, arg);
+                return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
 
         default:
                 printk("pktcdvd: Unknown ioctl for %s (%x)\n", pd->name, cmd);