From patchwork Fri Jul 3 09:46:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunjian Wang X-Patchwork-Id: 72961 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7B731A0519; Fri, 3 Jul 2020 11:46:41 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 5F93A1DAE5; Fri, 3 Jul 2020 11:46:41 +0200 (CEST) Received: from huawei.com (szxga04-in.huawei.com [45.249.212.190]) by dpdk.org (Postfix) with ESMTP id 18A851DAD9; Fri, 3 Jul 2020 11:46:40 +0200 (CEST) Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 365E213E4C011450D22F; Fri, 3 Jul 2020 17:46:39 +0800 (CST) Received: from localhost (10.174.185.168) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Fri, 3 Jul 2020 17:46:29 +0800 From: wangyunjian To: CC: , , , Yunjian Wang , Date: Fri, 3 Jul 2020 17:46:28 +0800 Message-ID: X-Mailer: git-send-email 1.9.5.msysgit.1 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.174.185.168] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH v4 2/3] eal: return error code when failure 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" From: Yunjian Wang Fix return value, using -EAGAIN instead of 0 when the callback is busy and using -ENOENT instead of 0 when the callback is not found. Fixes: a753e53d517b ("eal: add device event monitor framework") Cc: stable@dpdk.org Acked-by: Jeff Guo Signed-off-by: Yunjian Wang --- lib/librte_eal/common/eal_common_dev.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c index 363a2ca..d990bfd 100644 --- a/lib/librte_eal/common/eal_common_dev.c +++ b/lib/librte_eal/common/eal_common_dev.c @@ -530,9 +530,15 @@ static int cmp_dev_name(const struct rte_device *dev, const void *_name) free(event_cb); ret++; } else { - continue; + ret = -EAGAIN; + break; } } + + /* this callback is not be registered */ + if (ret == 0) + ret = -ENOENT; + rte_spinlock_unlock(&dev_event_lock); return ret; }