if ((uid != 0) || (gid != 0))
                pr_warning("Root becomes the owner of all s390dbf files "
                           "in sysfs\n");
-       if (!initialized)
-               BUG();
+       BUG_ON(!initialized);
        mutex_lock(&debug_mutex);
 
         /* create new debug_info */
 
                        ccw++;
                        dst += TAPEBLOCK_HSEC_SIZE;
                }
-               if (off > bv->bv_len)
-                       BUG();
+               BUG_ON(off > bv->bv_len);
        }
        ccw = tape_ccw_end(ccw, NOP, 0, NULL);
        DBF_EVENT(6, "xBREDccwg\n");
 
 {
        struct tape_request *request;
 
-       if (datasize > PAGE_SIZE || (cplength*sizeof(struct ccw1)) > PAGE_SIZE)
-               BUG();
+       BUG_ON(datasize > PAGE_SIZE || (cplength*sizeof(struct ccw1)) > PAGE_SIZE);
 
        DBF_LH(6, "tape_alloc_request(%d, %d)\n", cplength, datasize);
 
        device = (struct tape_device *) data;
        spin_lock_irq(get_ccwdev_lock(device->cdev));
        request = list_entry(device->req_queue.next, struct tape_request, list);
-       if (request->status != TAPE_REQUEST_LONG_BUSY)
-               BUG();
+       BUG_ON(request->status != TAPE_REQUEST_LONG_BUSY);
        DBF_LH(6, "%08x: Long busy timeout.\n", device->cdev_id);
        __tape_start_next_request(device);
        device->lb_timeout.data = (unsigned long) tape_put_device(device);
 
        int rc;
 
        request = (struct tape_request *) data;
-       if ((device = request->device) == NULL)
-               BUG();
+       device = request->device;
+       BUG_ON(!device);
 
        DBF_EVENT(3, "%08x: Assignment timeout. Device busy.\n",
                        device->cdev_id);