add: LWIP_ERROR(("__bba_getlink_state_async(exi allready locked)\n"));
context: static u32 __bba_getlink_state_async(){	u32 level,ret;	_CPU_ISR_Disable(level);	if(EXI_Lock(EXI_CHANNEL_0,EXI_DEVICE_2,NULL)==0) {		_CPU_ISR_Restore(level);		return 0;	}	_CPU_ISR_Restore(level);	ret = __linkstate();	EXI_Unlock(EXI_CHANNEL_0);	return ret;}