From patchwork Wed Jun 3 20:29:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 1303198 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=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=kDFVBigx; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49cgVg4DGyz9sSJ for ; Thu, 4 Jun 2020 06:29:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726281AbgFCU3O (ORCPT ); Wed, 3 Jun 2020 16:29:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726087AbgFCU3O (ORCPT ); Wed, 3 Jun 2020 16:29:14 -0400 Received: from mail-wm1-x343.google.com (mail-wm1-x343.google.com [IPv6:2a00:1450:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA806C08C5C0 for ; Wed, 3 Jun 2020 13:29:13 -0700 (PDT) Received: by mail-wm1-x343.google.com with SMTP id g10so3148813wmh.4 for ; Wed, 03 Jun 2020 13:29:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:subject:to:cc:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=IuHM7k1phXqc85mitxdMXeoaRKh49HDRoEHc0hsByJo=; b=kDFVBigxNhA8rDP1zbhkDZu4KWOTuittepFio2AMQL9WGxTUjSjyjWiaeHexCZhxwH yw0hp3DFP/eBnGCfaWgLvjq3B2wiNmim9o2kpzVOXQFkMrkaUtEIVuoOgEUtcXHF5Vqp wQzAEBfCcgjDDFTwkQXfjy2XfvepJ6C3KmWdSmYKz/DwqFHd0IBhR+UVL+IswPCxLhIl PivpZ4i/AcBCeIR+qGo/JvQ48A96Lejl6/J/OwdPPi2sRA+oklekgwhRF35hxpcyt1gt AiUxnI5wBLn0rfhdoObyfSvBrZbSM1LBJvhSFmgu8Fw1DOBt2JSfnSP1FgZzUA8+eF+4 ZUsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:cc:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=IuHM7k1phXqc85mitxdMXeoaRKh49HDRoEHc0hsByJo=; b=INhubsxaY35xGsl+F+P0ALQ73A2yF/9Cwsv8h35p6opqZeAvEWCnuE1mP6g9M74zdH h6wEqOM5LQBvdzp7I3Ay16OivHbdqg/la9+4TukwaL4qo997j/nu+eNKwQt3Nu/OfIYf tRva2mVYP22DEslEVeW/Z21PXbGvouHsoRiMZNSL5PJlId7XxIavmhYIG/AXIjlOb78N BVEkHtSwO6Tc2bcqSvdTr4xyPr90mF06Zr0mqkGu8aXyUG4B/fQHiyY93UdA1Q1jskMk t/6rl8X9FyPyZ66X+kkxYrYuugtnYzG2wsGiyyzW1jVJtOWhVks8qDZ/bY90KUtkmEg6 gbng== X-Gm-Message-State: AOAM533+acXGw+LPYGhxNFULChGnAOJX4dekBtVTBwOuyGzuacn/GIFN MmHqYXGQ1hbXCHHGRUHB5E2qgyS8 X-Google-Smtp-Source: ABdhPJzNRK3x7JxOootcfpZBhBqU9sV2Vgixb+CoonYpRp9rXga4Dk8HVHHJFj9AQeN7Vb2GoUHkrw== X-Received: by 2002:a1c:5541:: with SMTP id j62mr762318wmb.64.1591216152233; Wed, 03 Jun 2020 13:29:12 -0700 (PDT) Received: from ?IPv6:2003:ea:8f23:5700:7165:d336:c1fe:9e7a? (p200300ea8f2357007165d336c1fe9e7a.dip0.t-ipconnect.de. [2003:ea:8f23:5700:7165:d336:c1fe:9e7a]) by smtp.googlemail.com with ESMTPSA id y80sm4788235wmc.34.2020.06.03.13.29.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 03 Jun 2020 13:29:11 -0700 (PDT) From: Heiner Kallweit Subject: [PATCH v2 net-next] r8169: fix failing WoL To: David Miller , Jakub Kicinski , Realtek linux nic maintainers Cc: "netdev@vger.kernel.org" Message-ID: Date: Wed, 3 Jun 2020 22:29:06 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 MIME-Version: 1.0 Content-Language: en-US Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Th referenced change added an extra hw reset to rtl8169_net_suspend() what makes WoL fail on few chip versions. Therefore skip the extra reset if we're going down and WoL is enabled. In rtl_shutdown() rtl8169_hw_reset() is called by rtl8169_net_suspend() already if needed, therefore avoid issues issue by removing the extra call. The fix was tested on a system with RTL8168g. Meanwhile rtl8169_hw_reset() does more than a hw reset and should be renamed. But that's net-next material. Fixes: 8ac8e8c64b53 ("r8169: make rtl8169_down central chip quiesce function") Signed-off-by: Heiner Kallweit --- Uups, first version was cc'ed to Majordomo instead of the netdev mailing list. --- drivers/net/ethernet/realtek/r8169_main.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 4d2ec9742..dad84ecf5 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -3928,7 +3928,7 @@ static void rtl8169_tx_clear(struct rtl8169_private *tp) netdev_reset_queue(tp->dev); } -static void rtl8169_hw_reset(struct rtl8169_private *tp) +static void rtl8169_hw_reset(struct rtl8169_private *tp, bool going_down) { /* Give a racing hard_start_xmit a few cycles to complete. */ synchronize_rcu(); @@ -3938,6 +3938,9 @@ static void rtl8169_hw_reset(struct rtl8169_private *tp) rtl_rx_close(tp); + if (going_down && tp->dev->wol_enabled) + goto no_reset; + switch (tp->mac_version) { case RTL_GIGA_MAC_VER_27: case RTL_GIGA_MAC_VER_28: @@ -3959,7 +3962,7 @@ static void rtl8169_hw_reset(struct rtl8169_private *tp) } rtl_hw_reset(tp); - +no_reset: rtl8169_tx_clear(tp); rtl8169_init_ring_indexes(tp); } @@ -3972,7 +3975,7 @@ static void rtl_reset_work(struct rtl8169_private *tp) napi_disable(&tp->napi); netif_stop_queue(dev); - rtl8169_hw_reset(tp); + rtl8169_hw_reset(tp, false); for (i = 0; i < NUM_RX_DESC; i++) rtl8169_mark_to_asic(tp->RxDescArray + i); @@ -4637,7 +4640,7 @@ static void rtl8169_down(struct rtl8169_private *tp) phy_stop(tp->phydev); napi_disable(&tp->napi); - rtl8169_hw_reset(tp); + rtl8169_hw_reset(tp, true); rtl_pll_power_down(tp); @@ -4942,8 +4945,6 @@ static void rtl_shutdown(struct pci_dev *pdev) /* Restore original MAC address */ rtl_rar_set(tp, tp->dev->perm_addr); - rtl8169_hw_reset(tp); - if (system_state == SYSTEM_POWER_OFF) { if (tp->saved_wolopts) { rtl_wol_suspend_quirk(tp);