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,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 896F7C43381 for ; Mon, 18 Feb 2019 14:02:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 552912173C for ; Mon, 18 Feb 2019 14:02:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550498577; bh=qJ5g3ajEs7rKJOO1RFukkXSMqvQvVvQOyyBL29n3N2k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EGV+s9pks2TJF7SgkWAzOywnaj7sxuEAyiiPp9Mj1ztvBxEyyb8N5nO5xRppyC+UO IfbpR+xaI0qoc4q+kaYmQk/aV1EfV6kNNWBLmsCQR4E1NvWdQ/DWU0Yxa60uxIZwsw H0D8kildUbOWvJMvy/7v03dKgJsRtI0Ko1d3Xdqo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389549AbfBROCz (ORCPT ); Mon, 18 Feb 2019 09:02:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:44724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389486AbfBROCx (ORCPT ); Mon, 18 Feb 2019 09:02:53 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (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 D624C2070D; Mon, 18 Feb 2019 14:02:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550498572; bh=qJ5g3ajEs7rKJOO1RFukkXSMqvQvVvQOyyBL29n3N2k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dkjkQoxEgDlaMNEyX36cGxmD2jpNR/OWVwINLirXjRSVUeX69EySng9AW6GSGp7l/ DhohypEIVVday21sBp+WCxRlhwJnm1Q4KuuybmSdWv7lzus1bdRGekMzytoAfdhI3V aT4R+K8046rFwd151mhvyBGQO5U+gPBWG93EXl88= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Aaron Brown , Jeff Kirsher , Sasha Levin Subject: [PATCH 4.4 052/143] igb: Fix an issue that PME is not enabled during runtime suspend Date: Mon, 18 Feb 2019 14:43:00 +0100 Message-Id: <20190218133531.025408179@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190218133529.099444112@linuxfoundation.org> References: <20190218133529.099444112@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ [ 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