STATE_FORCE_TRX_OFF
rc = at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF,
state = STATE_FORCE_TRX_OFF;
case STATE_FORCE_TRX_OFF:
at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
STATE_FORCE_TRX_OFF, RG_TRX_STATE, NULL, 0, 1000, GFP_KERNEL);