2 files changed, 14 insertions, 11 deletions

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 0a1b1ea36ddc..bdbade9a5cf5 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -300,6 +300,15 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
                                 lo->disk->disk_name, result);
                 goto harderror;
         }
+
+        if (ntohl(reply.magic) != NBD_REPLY_MAGIC) {
+                printk(KERN_ERR "%s: Wrong magic (0x%lx)\n",
+                                lo->disk->disk_name,
+                                (unsigned long)ntohl(reply.magic));
+                result = -EPROTO;
+                goto harderror;
+        }
+
         req = nbd_find_request(lo, reply.handle);
         if (unlikely(IS_ERR(req))) {
                 result = PTR_ERR(req);
@@ -312,13 +321,6 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
                 goto harderror;
         }
 
-        if (ntohl(reply.magic) != NBD_REPLY_MAGIC) {
-                printk(KERN_ERR "%s: Wrong magic (0x%lx)\n",
-                                lo->disk->disk_name,
-                                (unsigned long)ntohl(reply.magic));
-                result = -EPROTO;
-                goto harderror;
-        }
         if (ntohl(reply.error)) {
                 printk(KERN_ERR "%s: Other side returned error (%d)\n",
                                 lo->disk->disk_name, ntohl(reply.error));
@@ -339,7 +341,8 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
                                         printk(KERN_ERR "%s: Receive data failed (result %d)\n",
                                                         lo->disk->disk_name,
                                                         result);
-                                        goto harderror;
+                                        req->errors++;
+                                        return req;
                                 }
                                 dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
                                         lo->disk->disk_name, req, bvec->bv_len);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index bde2c64b6346..451b996bba91 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2577,19 +2577,19 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
         case PKT_CTRL_CMD_SETUP:
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
-                mutex_lock(&ctl_mutex);
+                mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
                 ret = pkt_setup_dev(&ctrl_cmd);
                 mutex_unlock(&ctl_mutex);
                 break;
         case PKT_CTRL_CMD_TEARDOWN:
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
-                mutex_lock(&ctl_mutex);
+                mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
                 ret = pkt_remove_dev(&ctrl_cmd);
                 mutex_unlock(&ctl_mutex);
                 break;
         case PKT_CTRL_CMD_STATUS:
-                mutex_lock(&ctl_mutex);
+                mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
                 pkt_get_status(&ctrl_cmd);
                 mutex_unlock(&ctl_mutex);
                 break;