HPCFB_DC_UPDATEALL
if ((dc->dc_state&HPCFB_DC_UPDATEALL)) {
dc->dc_state &= ~(HPCFB_DC_UPDATE|HPCFB_DC_UPDATEALL);
} else if (dc->dc_state&HPCFB_DC_UPDATEALL){
dc->dc_state &= ~HPCFB_DC_UPDATEALL;
dc->dc_state |= HPCFB_DC_UPDATEALL;
dc->dc_state &= ~HPCFB_DC_UPDATEALL;