else
                info->input_signal_events.dcd_down++;
 #ifdef CONFIG_HDLC
-       if (info->netcount)
-               hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, info->netdev);
+       if (info->netcount) {
+               if (info->serial_signals & SerialSignal_DCD)
+                       netif_carrier_on(info->netdev);
+               else
+                       netif_carrier_off(info->netdev);
+       }
 #endif
        wake_up_interruptible(&info->status_event_wait_q);
        wake_up_interruptible(&info->event_wait_q);
        spin_lock_irqsave(&info->lock, flags);
        get_signals(info);
        spin_unlock_irqrestore(&info->lock, flags);
-       hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, dev);
-
+       if (info->serial_signals & SerialSignal_DCD)
+               netif_carrier_on(dev);
+       else
+               netif_carrier_off(dev);
        return 0;
 }
 
 
                        } else
                                info->input_signal_events.dcd_down++;
 #ifdef CONFIG_HDLC
-                       if (info->netcount)
-                               hdlc_set_carrier(status & MISCSTATUS_DCD, info->netdev);
+                       if (info->netcount) {
+                               if (status & MISCSTATUS_DCD)
+                                       netif_carrier_on(info->netdev);
+                               else
+                                       netif_carrier_off(info->netdev);
+                       }
 #endif
                }
                if (status & MISCSTATUS_CTS_LATCHED)
        spin_lock_irqsave(&info->irq_spinlock, flags);
        usc_get_serial_signals(info);
        spin_unlock_irqrestore(&info->irq_spinlock, flags);
-       hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, dev);
-
+       if (info->serial_signals & SerialSignal_DCD)
+               netif_carrier_on(dev);
+       else
+               netif_carrier_off(dev);
        return 0;
 }
 
 
        spin_lock_irqsave(&info->lock, flags);
        get_signals(info);
        spin_unlock_irqrestore(&info->lock, flags);
-       hdlc_set_carrier(info->signals & SerialSignal_DCD, dev);
-
+       if (info->signals & SerialSignal_DCD)
+               netif_carrier_on(dev);
+       else
+               netif_carrier_off(dev);
        return 0;
 }
 
                info->input_signal_events.dcd_down++;
        }
 #ifdef CONFIG_HDLC
-       if (info->netcount)
-               hdlc_set_carrier(info->signals & SerialSignal_DCD, info->netdev);
+       if (info->netcount) {
+               if (info->signals & SerialSignal_DCD)
+                       netif_carrier_on(info->netdev);
+               else
+                       netif_carrier_off(info->netdev);
+       }
 #endif
        wake_up_interruptible(&info->status_event_wait_q);
        wake_up_interruptible(&info->event_wait_q);
 
        spin_lock_irqsave(&info->lock, flags);
        get_signals(info);
        spin_unlock_irqrestore(&info->lock, flags);
-       hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, dev);
-
+       if (info->serial_signals & SerialSignal_DCD)
+               netif_carrier_on(dev);
+       else
+               netif_carrier_off(dev);
        return 0;
 }
 
                        } else
                                info->input_signal_events.dcd_down++;
 #ifdef CONFIG_HDLC
-                       if (info->netcount)
-                               hdlc_set_carrier(status & SerialSignal_DCD, info->netdev);
+                       if (info->netcount) {
+                               if (status & SerialSignal_DCD)
+                                       netif_carrier_on(info->netdev);
+                               else
+                                       netif_carrier_off(info->netdev);
+                       }
 #endif
                }
                if (status & MISCSTATUS_CTS_LATCHED)