* for transfer
                                                 */
        unsigned int dmabuf_used_size[2];       /* which size was truly used */
-       unsigned int dmabuf_panic_size[2];
        int dmabuf_pages[2];                    /* number of pages in buffer */
        unsigned char exttrg_users;             /*
                                                 * bit field of external trigger
        devpriv->dmabuf_use_size[0] = dmalen0;
        devpriv->dmabuf_use_size[1] = dmalen1;
 
-#if 0
-       if (cmd->scan_end_arg < PCI9118_HALF_FIFO_SZ) {
-               devpriv->dmabuf_panic_size[0] =
-                   (PCI9118_HALF_FIFO_SZ / cmd->scan_end_arg +
-                    1) * cmd->scan_end_arg * sizeof(short);
-               devpriv->dmabuf_panic_size[1] =
-                   (PCI9118_HALF_FIFO_SZ / cmd->scan_end_arg +
-                    1) * cmd->scan_end_arg * sizeof(short);
-       } else {
-               devpriv->dmabuf_panic_size[0] =
-                   (cmd->scan_end_arg << 1) % devpriv->dmabuf_size[0];
-               devpriv->dmabuf_panic_size[1] =
-                   (cmd->scan_end_arg << 1) % devpriv->dmabuf_size[1];
-       }
-#endif
-
        pci9118_amcc_dma_ena(dev, false);
        pci9118_amcc_setup_dma(dev, 0);
        /* init DMA transfer */