bridge_read
bridge_read(bc, b_widget.w_tflush); /* Flush */
bridge_read(data->bc, b_wid_tflush);
device = bridge_read(bc, b_int_device);
bridge_read(bc, b_wid_tflush);
bridge_read(data->bc, b_wid_tflush);
bridge_read(bc, b_wid_tflush); /* wait until Bridge PIO complete */
!bridge_read(devfn, reg, len, value))