From patchwork Wed Feb 5 08:55:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ong Boon Leong X-Patchwork-Id: 1233716 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 (no SPF record) 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=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48CFlG1DkVz9sSc for ; Wed, 5 Feb 2020 19:55:38 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728117AbgBEIzg (ORCPT ); Wed, 5 Feb 2020 03:55:36 -0500 Received: from mga09.intel.com ([134.134.136.24]:48635 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728107AbgBEIzg (ORCPT ); Wed, 5 Feb 2020 03:55:36 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Feb 2020 00:55:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,405,1574150400"; d="scan'208";a="264149178" Received: from unknown (HELO bong5-HP-Z440.png.intel.com) ([10.221.118.166]) by fmsmga002.fm.intel.com with ESMTP; 05 Feb 2020 00:55:33 -0800 From: Ong Boon Leong To: netdev@vger.kernel.org Cc: Tan Tee Min , Voon Weifeng , Giuseppe Cavallaro , Alexandre TORGUE , Jose Abreu , "David S . Miller" , Maxime Coquelin , Joao Pinto , Arnd Bergmann , Alexandru Ardelean , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH net v4 1/6] net: stmmac: Fix incorrect location to set real_num_rx|tx_queues Date: Wed, 5 Feb 2020 16:55:05 +0800 Message-Id: <20200205085510.32353-2-boon.leong.ong@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200205085510.32353-1-boon.leong.ong@intel.com> References: <20200205085510.32353-1-boon.leong.ong@intel.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Aashish Verma netif_set_real_num_tx_queues() & netif_set_real_num_rx_queues() should be used to inform network stack about the real Tx & Rx queue (active) number in both stmmac_open() and stmmac_resume(), therefore, we move the code from stmmac_dvr_probe() to stmmac_hw_setup(). For driver open(), rtnl_lock is acquired by network stack but not in the resume(). Therefore, we need to rtnl_lock() and rtnl_unlock() when calling stmmac_hw_setup() within resume(). Thanks Jose Abreu for input. Fixes: c02b7a914551 ("net: stmmac: use netif_set_real_num_{rx,tx}_queues") Signed-off-by: Aashish Verma Tested-by: Tan, Tee Min Signed-off-by: Ong Boon Leong --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5836b21edd7e..4d9afa13eeb9 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2657,6 +2657,10 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp) stmmac_enable_tbs(priv, priv->ioaddr, enable, chan); } + /* Configure real RX and TX queues */ + netif_set_real_num_rx_queues(dev, priv->plat->rx_queues_to_use); + netif_set_real_num_tx_queues(dev, priv->plat->tx_queues_to_use); + /* Start the ball rolling... */ stmmac_start_all_dma(priv); @@ -4738,10 +4742,6 @@ int stmmac_dvr_probe(struct device *device, stmmac_check_ether_addr(priv); - /* Configure real RX and TX queues */ - netif_set_real_num_rx_queues(ndev, priv->plat->rx_queues_to_use); - netif_set_real_num_tx_queues(ndev, priv->plat->tx_queues_to_use); - ndev->netdev_ops = &stmmac_netdev_ops; ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | @@ -5091,7 +5091,9 @@ int stmmac_resume(struct device *dev) stmmac_clear_descriptors(priv); + rtnl_lock(); stmmac_hw_setup(ndev, false); + rtnl_unlock(); stmmac_init_coalesce(priv); stmmac_set_rx_mode(ndev);