From patchwork Wed Aug 28 14:03:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 1154477 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=suse.de Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46JSCP6nCBz9sNp for ; Thu, 29 Aug 2019 00:04:00 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727056AbfH1ODv (ORCPT ); Wed, 28 Aug 2019 10:03:51 -0400 Received: from mx2.suse.de ([195.135.220.15]:39794 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726857AbfH1ODe (ORCPT ); Wed, 28 Aug 2019 10:03:34 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 1B7ACB650; Wed, 28 Aug 2019 14:03:33 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , Paul Burton , James Hogan , "David S. Miller" , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH net-next 14/15] net: sgi: ioc3-eth: protect emcr in all cases Date: Wed, 28 Aug 2019 16:03:13 +0200 Message-Id: <20190828140315.17048-15-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20190828140315.17048-1-tbogendoerfer@suse.de> References: <20190828140315.17048-1-tbogendoerfer@suse.de> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org emcr in private struct wasn't always protected by spinlock. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/sgi/ioc3-eth.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index b8aea19fbeba..5de8300e5eb2 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -729,6 +729,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private *ip) { struct ioc3_ethregs *regs = ip->regs; + spin_lock_irq(&ip->ioc3_lock); + if (ip->mii.full_duplex) { writel(ETCSR_FD, ®s->etcsr); ip->emcr |= EMCR_DUPLEX; @@ -737,6 +739,8 @@ static inline void ioc3_setup_duplex(struct ioc3_private *ip) ip->emcr &= ~EMCR_DUPLEX; } writel(ip->emcr, ®s->emcr); + + spin_unlock_irq(&ip->ioc3_lock); } static void ioc3_timer(struct timer_list *t) @@ -1627,6 +1631,8 @@ static void ioc3_set_multicast_list(struct net_device *dev) netif_stop_queue(dev); /* Lock out others. */ + spin_lock_irq(&ip->ioc3_lock); + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ ip->emcr |= EMCR_PROMISC; writel(ip->emcr, ®s->emcr); @@ -1655,6 +1661,8 @@ static void ioc3_set_multicast_list(struct net_device *dev) writel(ip->ehar_l, ®s->ehar_l); } + spin_unlock_irq(&ip->ioc3_lock); + netif_wake_queue(dev); /* Let us get going again. */ }