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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 84C20C433E7 for ; Mon, 12 Oct 2020 14:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 42D22208FE for ; Mon, 12 Oct 2020 14:06:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602511567; bh=WaRSNmjJ0P7LxVJcmFnrIUckbJpl6ghTVNCjNVUK/6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=w6fz08Qjby60gkraKM4eTHhBy+/5hq1x0hYjstBHgjOb3cB9zim5qPQVmFvDRBNPn DOWRpcUC/eoKTiyd6iKe6JHOmAZAQPhDnWR7hwbs59mxRRExpYNXmPweilD8A3jeRb UZ13CmI7z8bWjWexhSK9fR17fl3UE8uddvmqhY1U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391086AbgJLOGF (ORCPT ); Mon, 12 Oct 2020 10:06:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:36738 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727298AbgJLNey (ORCPT ); Mon, 12 Oct 2020 09:34:54 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 40AF7204EA; Mon, 12 Oct 2020 13:34:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602509693; bh=WaRSNmjJ0P7LxVJcmFnrIUckbJpl6ghTVNCjNVUK/6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F5JEm1CYdIkf0GaWLbrSbHCZb4iWoQEcfGbhEtD8gXFS1dTL+gDnXsvAfy4OGsNRV eMO+TegwyMXE2ncpmrNDpctFBC05kqfF5V0fDbwmnvzgVO+V7bVHZS39wBC4y0D3sY dt8n7VlYxxa8v0E7DkntcSHDQMNYdZZIAKTRUTy4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Voon Weifeng , Mark Gross , "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 44/54] net: stmmac: removed enabling eee in EEE set callback Date: Mon, 12 Oct 2020 15:27:06 +0200 Message-Id: <20201012132631.604985413@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201012132629.585664421@linuxfoundation.org> References: <20201012132629.585664421@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Voon Weifeng [ Upstream commit 7241c5a697479c7d0c5a96595822cdab750d41ae ] EEE should be only be enabled during stmmac_mac_link_up() when the link are up and being set up properly. set_eee should only do settings configuration and disabling the eee. Without this fix, turning on EEE using ethtool will return "Operation not supported". This is due to the driver is in a dead loop waiting for eee to be advertised in the for eee to be activated but the driver will only configure the EEE advertisement after the eee is activated. Ethtool should only return "Operation not supported" if there is no EEE capbility in the MAC controller. Fixes: 8a7493e58ad6 ("net: stmmac: Fix a race in EEE enable callback") Signed-off-by: Voon Weifeng Acked-by: Mark Gross Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c index 3519a8a589dda..c8673e231a880 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -678,23 +678,16 @@ static int stmmac_ethtool_op_set_eee(struct net_device *dev, struct stmmac_priv *priv = netdev_priv(dev); int ret; - if (!edata->eee_enabled) { + if (!priv->dma_cap.eee) + return -EOPNOTSUPP; + + if (!edata->eee_enabled) stmmac_disable_eee_mode(priv); - } else { - /* We are asking for enabling the EEE but it is safe - * to verify all by invoking the eee_init function. - * In case of failure it will return an error. - */ - edata->eee_enabled = stmmac_eee_init(priv); - if (!edata->eee_enabled) - return -EOPNOTSUPP; - } ret = phy_ethtool_set_eee(dev->phydev, edata); if (ret) return ret; - priv->eee_enabled = edata->eee_enabled; priv->tx_lpi_timer = edata->tx_lpi_timer; return 0; } -- 2.25.1