diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index c89990f..101ffc9 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -866,50 +866,50 @@
 	instance->line_status = buf[CXINF_LINE_STATUS];
 	switch (instance->line_status) {
 	case 0:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: down\n");
 		break;
 
 	case 1:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: attempting to activate\n");
 		break;
 
 	case 2:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: training\n");
 		break;
 
 	case 3:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: channel analysis\n");
 		break;
 
 	case 4:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: exchange\n");
 		break;
 
 	case 5:
 		atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
-		atm_dev->signal = ATM_PHY_SIG_FOUND;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND);
 
 		atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
 		     buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
 		break;
 
 	case 6:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: waiting\n");
 		break;
 
 	case 7:
-		atm_dev->signal = ATM_PHY_SIG_LOST;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
 		atm_info(usbatm, "ADSL line: initializing\n");
 		break;
 
 	default:
-		atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
+		atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN);
 		atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
 		break;
 	}