diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c
index da4b91f..41c56ea 100644
--- a/drivers/atm/suni.c
+++ b/drivers/atm/suni.c
@@ -291,8 +291,9 @@
 
 static void poll_los(struct atm_dev *dev)
 {
-	dev->signal = GET(RSOP_SIS) & SUNI_RSOP_SIS_LOSV ? ATM_PHY_SIG_LOST :
-	  ATM_PHY_SIG_FOUND;
+	atm_dev_signal_change(dev,
+		GET(RSOP_SIS) & SUNI_RSOP_SIS_LOSV ?
+		ATM_PHY_SIG_LOST : ATM_PHY_SIG_FOUND);
 }