diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
index 7e50eeb4cc6f2f0fd54d02f808368e7942d44862..7e3e624a3c6fcd6a82ab9deb234f1c806ef7a80b 100644
--- a/drivers/soc/qcom/pmic_glink.c
+++ b/drivers/soc/qcom/pmic_glink.c
@@ -115,8 +115,16 @@ EXPORT_SYMBOL_GPL(pmic_glink_client_register);
 int pmic_glink_send(struct pmic_glink_client *client, void *data, size_t len)
 {
 	struct pmic_glink *pg = client->pg;
+	int ret;
+
+	mutex_lock(&pg->state_lock);
+	if (!pg->ept)
+		ret = -ECONNRESET;
+	else
+		ret = rpmsg_send(pg->ept, data, len);
+	mutex_unlock(&pg->state_lock);
 
-	return rpmsg_send(pg->ept, data, len);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(pmic_glink_send);
 
diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
index 94f2df02f06eebf3dac52b473130122f893c9032..b07f281b271003171c0f0c1b0b2bb629e38efbd1 100644
--- a/drivers/usb/typec/ucsi/ucsi_glink.c
+++ b/drivers/usb/typec/ucsi/ucsi_glink.c
@@ -72,6 +72,9 @@ struct pmic_glink_ucsi {
 
 	struct work_struct notify_work;
 	struct work_struct register_work;
+	spinlock_t state_lock;
+	bool ucsi_registered;
+	bool pd_running;
 
 	u8 read_buf[UCSI_BUF_SIZE];
 };
@@ -254,6 +257,8 @@ static void pmic_glink_ucsi_register(struct work_struct *work)
 	struct pmic_glink_ucsi *ucsi = container_of(work, struct pmic_glink_ucsi, register_work);
 	int orientation;
 	int i;
+	unsigned long flags;
+	bool pd_running;
 
 	for (i = 0; i < PMIC_GLINK_MAX_PORTS; i++) {
 		if (!ucsi->port_orientation[i])
@@ -267,7 +272,17 @@ static void pmic_glink_ucsi_register(struct work_struct *work)
 		}
 	}
 
-	ucsi_register(ucsi->ucsi);
+	spin_lock_irqsave(&ucsi->state_lock, flags);
+	pd_running = ucsi->pd_running;
+	spin_unlock_irqrestore(&ucsi->state_lock, flags);
+
+	if (!ucsi->ucsi_registered && pd_running) {
+		ucsi_register(ucsi->ucsi);
+		ucsi->ucsi_registered = true;
+	} else if (ucsi->ucsi_registered && !pd_running) {
+		ucsi_unregister(ucsi->ucsi);
+		ucsi->ucsi_registered = false;
+	}
 }
 
 static void pmic_glink_ucsi_callback(const void *data, size_t len, void *priv)
@@ -291,11 +306,12 @@ static void pmic_glink_ucsi_callback(const void *data, size_t len, void *priv)
 static void pmic_glink_ucsi_pdr_notify(void *priv, int state)
 {
 	struct pmic_glink_ucsi *ucsi = priv;
+	unsigned long flags;
 
-	if (state == SERVREG_SERVICE_STATE_UP)
-		schedule_work(&ucsi->register_work);
-	else if (state == SERVREG_SERVICE_STATE_DOWN)
-		ucsi_unregister(ucsi->ucsi);
+	spin_lock_irqsave(&ucsi->state_lock, flags);
+	ucsi->pd_running = (state == SERVREG_SERVICE_STATE_UP);
+	spin_unlock_irqrestore(&ucsi->state_lock, flags);
+	schedule_work(&ucsi->register_work);
 }
 
 static void pmic_glink_ucsi_destroy(void *data)
@@ -328,6 +344,7 @@ static int pmic_glink_ucsi_probe(struct auxiliary_device *adev,
 	init_completion(&ucsi->read_ack);
 	init_completion(&ucsi->write_ack);
 	init_completion(&ucsi->sync_ack);
+	spin_lock_init(&ucsi->state_lock);
 	mutex_init(&ucsi->lock);
 
 	ucsi->ucsi = ucsi_create(dev, &pmic_glink_ucsi_ops);