From 039055b965b9cfbeacb8cdcd1ef57e18b6374e58 Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Wed, 8 Feb 2012 00:19:50 +0000 Subject: [PATCH] qeth: add wake_up on write channel To send commands on the write channel 8 buffers exist. If all 8 buffers are used, a wait is triggered on the write channel. When such buffer are freed, a wake_up is needed. This patch adds the missing wake_up in qeth_release_buffer(). This fix is especially important when running Communications Controller for Linux on System z. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 0565584b52c3..cbb101828dc3 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); -- 2.20.1