From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id D8CCCA00BE; Mon, 28 Oct 2019 15:23:26 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id BA9D51BF9E; Mon, 28 Oct 2019 15:22:31 +0100 (CET) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by dpdk.org (Postfix) with ESMTP id 934DB1BF4F for ; Mon, 28 Oct 2019 15:22:11 +0100 (CET) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x9SEKpqT005791; Mon, 28 Oct 2019 07:22:11 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=pfpt0818; bh=njxDrBYvdUWUj+eG7Fs23O3TqZSfquraKwmr3l7cD04=; b=KeJUBLHjstPt0wIU07+Ogll2vFhkDsEXcezkEC5Yq6y7wINHTnb2q0vSy8KlkbLcwo1Q a1I83wXkd9I2yLNBog6bkjf/BUrreZyI4ICBECv4LeC8+nPMPFu+aEJyWTI/etiy1AKG cdMFEh1Lh2d4/eJ/veok3vuKSVGahIT9Um4965Ibee5/6g79DOYPtnM/Z09+13BOXSk8 p8IvsCAPQ3qa+cdGt5AhMYhFMlptPOstGVEg63C6OlrYYqwYHO/f3pKZ3KO+N+anLp3J delaBvSNPBEwOV/O4NJAAy0P4i5GedjBhpBl63m3GBSs+nEUjXm1U86pM+q2otaAKjsE eQ== Received: from sc-exch03.marvell.com ([199.233.58.183]) by mx0b-0016f401.pphosted.com with ESMTP id 2vvnnnwnfq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 28 Oct 2019 07:22:10 -0700 Received: from SC-EXCH01.marvell.com (10.93.176.81) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 28 Oct 2019 07:22:09 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH01.marvell.com (10.93.176.81) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Mon, 28 Oct 2019 07:22:09 -0700 Received: from amok.marvell.com (unknown [10.95.130.103]) by maili.marvell.com (Postfix) with ESMTP id 0A6823F704E; Mon, 28 Oct 2019 07:22:07 -0700 (PDT) From: Andrzej Ostruszka To: , Xiao Wang CC: , Date: Mon, 28 Oct 2019 15:21:44 +0100 Message-ID: <20191028142145.3758-11-aostruszka@marvell.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191028142145.3758-1-aostruszka@marvell.com> References: <20191022115412.8837-1-aostruszka@marvell.com> <20191028142145.3758-1-aostruszka@marvell.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-10-28_05:2019-10-25,2019-10-28 signatures=0 Subject: [dpdk-dev] [PATCH v5 10/11] net/ifc: clean LTO build warnings (maybe-uninitialized) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" During LTO build compiler reports some 'false positive' warnings about variables being possibly used uninitialized. This patch silences these warnings. Exemplary compiler warning to suppress (with LTO enabled): error: ‘features’ may be used uninitialized in this function [-Werror=maybe-uninitialized] if (RTE_VHOST_NEED_LOG(features)) { Signed-off-by: Andrzej Ostruszka --- drivers/net/ifc/ifcvf_vdpa.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/net/ifc/ifcvf_vdpa.c b/drivers/net/ifc/ifcvf_vdpa.c index 8de9ef199..4cdff8712 100644 --- a/drivers/net/ifc/ifcvf_vdpa.c +++ b/drivers/net/ifc/ifcvf_vdpa.c @@ -304,8 +304,8 @@ vdpa_ifcvf_stop(struct ifcvf_internal *internal) struct ifcvf_hw *hw = &internal->hw; uint32_t i; int vid; - uint64_t features; - uint64_t log_base, log_size; + uint64_t features = 0; + uint64_t log_base = 0, log_size = 0; uint64_t len; vid = internal->vid; @@ -348,6 +348,8 @@ vdpa_enable_vfio_intr(struct ifcvf_internal *internal, bool m_rx) struct rte_vhost_vring vring; int fd; + vring.callfd = -1; + nr_vring = rte_vhost_get_vring_num(internal->vid); irq_set = (struct vfio_irq_set *)irq_set_buf; @@ -442,6 +444,7 @@ notify_relay(void *arg) } internal->epfd = epfd; + vring.kickfd = -1; for (qid = 0; qid < q_num; qid++) { ev.events = EPOLLIN | EPOLLPRI; rte_vhost_get_vhost_vring(internal->vid, qid, &vring); @@ -577,7 +580,7 @@ m_ifcvf_start(struct ifcvf_internal *internal) struct ifcvf_hw *hw = &internal->hw; uint32_t i, nr_vring; int vid, ret; - struct rte_vhost_vring vq; + struct rte_vhost_vring vq = { 0 }; void *vring_buf; uint64_t m_vring_iova = IFCVF_MEDIATED_VRING; uint64_t size; @@ -721,6 +724,7 @@ vring_relay(void *arg) } internal->epfd = epfd; + vring.kickfd = -1; for (qid = 0; qid < q_num; qid++) { ev.events = EPOLLIN | EPOLLPRI; rte_vhost_get_vhost_vring(vid, qid, &vring); @@ -930,11 +934,11 @@ ifcvf_dev_close(int vid) static int ifcvf_set_features(int vid) { - uint64_t features; + uint64_t features = 0; int did; struct internal_list *list; struct ifcvf_internal *internal; - uint64_t log_base, log_size; + uint64_t log_base = 0, log_size = 0; did = rte_vhost_get_vdpa_device_id(vid); list = find_internal_resource_by_did(did); -- 2.17.1