HV_CALL_ISR
case HV_CALL_ISR:
set_channel_read_mode(device->channel, HV_CALL_ISR);
set_channel_read_mode(new_sc, HV_CALL_ISR);
set_channel_read_mode(new_sc, HV_CALL_ISR);
set_channel_read_mode(channel, HV_CALL_ISR);