diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 0565584b52c32de8a3360f8763a710d9cac44da1..cbb101828dc33f478b521331c176bd3153163fc6 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -678,6 +678,7 @@ void qeth_release_buffer(struct qeth_channel *channel,
 	iob->callback = qeth_send_control_data_cb;
 	iob->rc = 0;
 	spin_unlock_irqrestore(&channel->iob_lock, flags);
+	wake_up(&channel->wait_q);
 }
 EXPORT_SYMBOL_GPL(qeth_release_buffer);