--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -210,6 +210,7 @@ static int handle_tx(struct ser_device *
 	struct tty_struct *tty;
 	struct sk_buff *skb;
 	int tty_wr, len, room;
+	unsigned long ts;
 
 	tty = ser->tty;
 	ser->tx_started = true;
@@ -218,8 +219,11 @@ static int handle_tx(struct ser_device *
 	if (test_and_set_bit(CAIF_SENDING, &ser->state))
 		return 0;
 
+	ts = jiffies + 2;
 	/* skb_peek is safe because handle_tx is called after skb_queue_tail */
 	while ((skb = skb_peek(&ser->head)) != NULL) {
+		if (jiffies > ts)
+			break;
 
 		/* Make sure you don't write too much */
 		len = skb->len;