From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754765AbbBBDVq (ORCPT ); Sun, 1 Feb 2015 22:21:46 -0500 Received: from p3plsmtps2ded04.prod.phx3.secureserver.net ([208.109.80.198]:47746 "EHLO p3plsmtps2ded04.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754655AbbBBDVn (ORCPT ); Sun, 1 Feb 2015 22:21:43 -0500 x-originating-ip: 72.167.245.219 From: Dexuan Cui To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, driverdev-devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, jasowang@redhat.com, kys@microsoft.com, vkuznets@redhat.com Cc: haiyangz@microsoft.com Subject: [PATCH v2 1/3] hv: hv_util: move vmbus_open() to a later place Date: Sun, 1 Feb 2015 20:35:18 -0800 Message-Id: <1422851718-2353-1-git-send-email-decui@microsoft.com> X-Mailer: git-send-email 1.7.4.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Before the line vmbus_open() returns, srv->util_cb can be already running and the variables, like util_fw_version, are needed by the srv->util_cb. So we have to make sure the variables are initialized before the vmbus_open(). CC: "K. Y. Srinivasan" Reviewed-by: Vitaly Kuznetsov Signed-off-by: Dexuan Cui --- v2: This is a RESEND. I just added Vitaly's Reviewed-by. drivers/hv/hv_util.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index 3b9c9ef..c5be773 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -340,12 +340,8 @@ static int util_probe(struct hv_device *dev, set_channel_read_state(dev->channel, false); - ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0, - srv->util_cb, dev->channel); - if (ret) - goto error; - hv_set_drvdata(dev, srv); + /* * Based on the host; initialize the framework and * service version numbers we will negotiate. @@ -365,6 +361,11 @@ static int util_probe(struct hv_device *dev, hb_srv_version = HB_VERSION; } + ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0, + srv->util_cb, dev->channel); + if (ret) + goto error; + return 0; error: -- 1.9.1