From mboxrd@z Thu Jan 1 00:00:00 1970 From: frank.blaschka@de.ibm.com Subject: [patch 6/6] [PATCH] qeth: add wake_up on write channel Date: Wed, 08 Feb 2012 11:19:50 +0100 Message-ID: <20120208102029.681812945@de.ibm.com> References: <20120208101944.272235343@de.ibm.com> Return-path: Content-Disposition: inline; filename=607-qeth-write-wake-up.diff Sender: netdev-owner@vger.kernel.org List-Archive: List-Post: To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, Ursula Braun List-ID: From: Ursula Braun 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 --- drivers/s390/net/qeth_core_main.c | 1 + 1 file changed, 1 insertion(+) --- 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_cha 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);