diff --git a/sys/dev/em/if_em.c b/sys/dev/em/if_em.c
index 081a24332f6e..3a8f6772cdf5 100644
--- a/sys/dev/em/if_em.c
+++ b/sys/dev/em/if_em.c
@@ -138,8 +138,11 @@ static int  em_probe(device_t);
 static int  em_attach(device_t);
 static int  em_detach(device_t);
 static int  em_shutdown(device_t);
+static int  em_suspend(device_t);
+static int  em_resume(device_t);
 static void em_intr(void *);
 static void em_start(struct ifnet *);
+static void em_start_locked(struct ifnet *ifp);
 static int  em_ioctl(struct ifnet *, u_long, caddr_t);
 static void em_watchdog(struct ifnet *);
 static void em_init(void *);
@@ -220,6 +223,8 @@ static device_method_t em_methods[] = {
 	DEVMETHOD(device_attach, em_attach),
 	DEVMETHOD(device_detach, em_detach),
 	DEVMETHOD(device_shutdown, em_shutdown),
+	DEVMETHOD(device_suspend, em_suspend),
+	DEVMETHOD(device_resume, em_resume),
 	{0, 0}
 };
 
@@ -602,6 +607,41 @@ em_shutdown(device_t dev)
 	return(0);
 }
 
+/*
+ * Suspend/resume device methods.
+ */
+static int
+em_suspend(device_t dev)
+{
+	struct adapter *adapter = device_get_softc(dev);
+
+	EM_LOCK(adapter);
+	em_stop(adapter);
+	EM_UNLOCK(adapter);
+
+	return bus_generic_suspend(dev);
+}
+
+static int
+em_resume(device_t dev)
+{
+	struct adapter *adapter = device_get_softc(dev);
+	struct ifnet *ifp;
+
+	EM_LOCK(adapter);
+	ifp = adapter->ifp;
+	if (ifp->if_flags & IFF_UP) {
+		em_init_locked(adapter);
+		if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+			em_start_locked(ifp);
+	}
+
+	em_init_locked(adapter);
+	EM_UNLOCK(adapter);
+
+	return bus_generic_resume(dev);
+}
+
 
 /*********************************************************************
  *  Transmit entry point