From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27107C43387 for ; Tue, 18 Dec 2018 11:02:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F3BC1217D9 for ; Tue, 18 Dec 2018 11:02:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726783AbeLRLCO (ORCPT ); Tue, 18 Dec 2018 06:02:14 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:38228 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726593AbeLRLCI (ORCPT ); Tue, 18 Dec 2018 06:02:08 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id EA10B3AFEB62; Tue, 18 Dec 2018 19:02:03 +0800 (CST) Received: from linux-ioko.site (10.71.200.31) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.408.0; Tue, 18 Dec 2018 19:01:56 +0800 From: Peng Li To: CC: , , , , , Subject: [PATCH net-next 03/12] net: hns3: fix napi_disable not return problem Date: Tue, 18 Dec 2018 19:37:50 +0800 Message-ID: <1545133079-79605-4-git-send-email-lipeng321@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1545133079-79605-1-git-send-email-lipeng321@huawei.com> References: <1545133079-79605-1-git-send-email-lipeng321@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.71.200.31] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Huazhong Tan While doing DOWN, the calling of napi_disable() may not return, since the napi_complete() in the hns3_nic_common_poll() will never be called when HNS3_NIC_STATE_DOWN is set. So we need to call napi_complete() before checking HNS3_NIC_STETE_DOWN. Fixes: ff0699e04b97 ("net: hns3: stop napi polling when HNS3_NIC_STATE_DOWN is set") Signed-off-by: Huazhong Tan Signed-off-by: Peng Li --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 2081e2e..e7cde08 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2909,8 +2909,8 @@ static int hns3_nic_common_poll(struct napi_struct *napi, int budget) if (!clean_complete) return budget; - if (likely(!test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) && - napi_complete(napi)) { + if (napi_complete(napi) && + likely(!test_bit(HNS3_NIC_STATE_DOWN, &priv->state))) { hns3_update_new_int_gl(tqp_vector); hns3_mask_vector_irq(tqp_vector, 1); } -- 1.9.1