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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 53C93C677D4 for ; Mon, 8 Oct 2018 18:38:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1D717214C2 for ; Mon, 8 Oct 2018 18:38:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="K5V9JktP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D717214C2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729314AbeJIBvw (ORCPT ); Mon, 8 Oct 2018 21:51:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:38886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728690AbeJIBvv (ORCPT ); Mon, 8 Oct 2018 21:51:51 -0400 Received: from localhost (ip-213-127-77-176.ip.prioritytelecom.net [213.127.77.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 549312064A; Mon, 8 Oct 2018 18:38:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1539023927; bh=aSh43IUPM4VPoZ3E2oWGmUK4wEclnNno0YGOItChOMU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K5V9JktP/9ExGjP1AW7PlLglkaL6bTAT1x75Mn81/bmeWUsIcguNLE5qvGJJTxtee p6FBE6rcZBXg/g7y0jQF2Ew9YjuYAHh8QfkerdFb3T9ICaI4Zaubs6CMh82kErJmgC i+4Li/4g32FYYcd0eoqInsyzk3k3ZrzhQ4PvzhGw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Peng Li , "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 09/59] net: hns: add netif_carrier_off before change speed and duplex Date: Mon, 8 Oct 2018 20:31:16 +0200 Message-Id: <20181008175547.636207799@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181008175546.620836256@linuxfoundation.org> References: <20181008175546.620836256@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Peng Li [ Upstream commit 455c4401fe7a538facaffb35b906ce19f1ece474 ] If there are packets in hardware when changing the speed or duplex, it may cause hardware hang up. This patch adds netif_carrier_off before change speed and duplex in ethtool_ops.set_link_ksettings, and adds netif_carrier_on after complete the change. Signed-off-by: Peng Li Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c @@ -243,7 +243,9 @@ static int hns_nic_set_link_ksettings(st } if (h->dev->ops->adjust_link) { + netif_carrier_off(net_dev); h->dev->ops->adjust_link(h, (int)speed, cmd->base.duplex); + netif_carrier_on(net_dev); return 0; }