From patchwork Tue Dec 18 11:37:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lipeng (Y)" X-Patchwork-Id: 1015269 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43Jw96138Gz9sC7 for ; Tue, 18 Dec 2018 22:02:50 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726739AbeLRLCL (ORCPT ); Tue, 18 Dec 2018 06:02:11 -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 X-Originating-IP: [10.71.200.31] X-CFilter-Loop: Reflected Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@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); }