if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
                (unsigned)sk->sk_rcvbuf && rx_flow_is_on(cf_sk)) {
-               trace_printk("CAIF: %s(): "
-                       "sending flow OFF (queue len = %d %d)\n",
-                       __func__,
+               pr_debug("sending flow OFF (queue len = %d %d)\n",
                        atomic_read(&cf_sk->sk.sk_rmem_alloc),
                        sk_rcvbuf_lowwater(cf_sk));
                set_rx_flow_off(cf_sk);
                return err;
        if (!sk_rmem_schedule(sk, skb->truesize) && rx_flow_is_on(cf_sk)) {
                set_rx_flow_off(cf_sk);
-               trace_printk("CAIF: %s(): "
-                       "sending flow OFF due to rmem_schedule\n",
-                       __func__);
+               pr_debug("sending flow OFF due to rmem_schedule\n");
                dbfs_atomic_inc(&cnt.num_rx_flow_off);
                caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_OFF_REQ);
        }
 
        caif_assert(adap_layer != NULL);
        channel_id = adap_layer->id;
        if (adap_layer->dn == NULL || channel_id == 0) {
-               pr_err("adap_layer->id is 0\n");
+               pr_err("adap_layer->dn == NULL or adap_layer->id is 0\n");
                ret = -ENOTCONN;
                goto end;
        }