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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 A8EE7C282C8 for ; Mon, 28 Jan 2019 16:35:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7174420844 for ; Mon, 28 Jan 2019 16:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548693302; bh=J9QW++9mEoTVL5pt0tTH7GRQl0F01vQ263prbs3zTAA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=njhB23/j9M+ABwx+3EaUzXYk6TXOOMOZCd4SbpGh0Ds/DmkotgYVE1Q5B4yV8jqan WgL0Zo/a8V7O+CUC97tVusafnMZWl/im69q3tIjbN21N7KYcWswH85oMM4ie6TPmFT wI74j5l0TDx/su17YxbPjMg0TOwtYm24pQu1wbfk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390056AbfA1QZv (ORCPT ); Mon, 28 Jan 2019 11:25:51 -0500 Received: from mail.kernel.org ([198.145.29.99]:34706 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390023AbfA1QZp (ORCPT ); Mon, 28 Jan 2019 11:25:45 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CC9C72084A; Mon, 28 Jan 2019 16:25:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548692744; bh=J9QW++9mEoTVL5pt0tTH7GRQl0F01vQ263prbs3zTAA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yQsA90c/RQhEWWT+PiwHHBW+apwEa7ul9sZmI3xpoxzAruaJS351xZvywpmfzcBb5 YqrKMebW4iVppRhwiFbQFQsGgcyruw+EdD59ipBB4vfol+C/L++8+xv4FK7yHZgJWF 40BLP+d2Dpkd/SnzD0cF15Ex0On5wxW1ag6Yw4Lc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kai-Heng Feng , Jeff Kirsher , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 59/80] igb: Fix an issue that PME is not enabled during runtime suspend Date: Mon, 28 Jan 2019 11:23:40 -0500 Message-Id: <20190128162401.58841-59-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128162401.58841-1-sashal@kernel.org> References: <20190128162401.58841-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kai-Heng Feng [ Upstream commit 1fb3a7a75e2efcc83ef21f2434069cddd6fae6f5 ] I210 ethernet card doesn't wakeup when a cable gets plugged. It's because its PME is not set. Since commit 42eca2302146 ("PCI: Don't touch card regs after runtime suspend D3"), if the PCI state is saved, pci_pm_runtime_suspend() stops calling pci_finish_runtime_suspend(), which enables the PCI PME. To fix the issue, let's not to save PCI states when it's runtime suspend, to let the PCI subsystem enables PME. Fixes: 42eca2302146 ("PCI: Don't touch card regs after runtime suspend D3") Signed-off-by: Kai-Heng Feng Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/igb/igb_main.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 02b23f6277fb..c1796aa2dde5 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -7339,9 +7339,11 @@ static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, rtnl_unlock(); #ifdef CONFIG_PM - retval = pci_save_state(pdev); - if (retval) - return retval; + if (!runtime) { + retval = pci_save_state(pdev); + if (retval) + return retval; + } #endif status = rd32(E1000_STATUS); -- 2.19.1