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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 B5A52C43603 for ; Wed, 11 Dec 2019 16:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B000208C3 for ; Wed, 11 Dec 2019 16:11:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576080715; bh=bOEKlkM0Bu6aFMQUWVJmuPimpJcF6y2YbSZcnZpYxnM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZyztQHjEENv3F1hIEuOSqHi8IYXxs0R18DseKNkPgC7hGYqy8XpoMfty3fo9yIatu PhBE/KM9Qi/iD4Ml56pcrsXOE/GEyUdnftpVeoOpw7S83BHd4yDEbOn2TMjWd+jYWM iL883W1g7VIBMgVtt2DAPSzXLiu3djD5HpHYiA9w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731059AbfLKQLy (ORCPT ); Wed, 11 Dec 2019 11:11:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:58758 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730755AbfLKPK1 (ORCPT ); Wed, 11 Dec 2019 10:10:27 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 28DF424654; Wed, 11 Dec 2019 15:10:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576077026; bh=bOEKlkM0Bu6aFMQUWVJmuPimpJcF6y2YbSZcnZpYxnM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fsyPp5aEMcAsneJZ7VGXDpA9x37TO7BC4jXjkQhYNu4VDWCFgw4P7i7mfiex3pLrG GN/7SGospIxNWIoe9HxlXzYehFti/lSIqc3D/ZWXieVV0TeuVy8d3Y69BMHkvbJiw4 N/ywpVpCudeft1vCvMeOv+yVk5n8bPXGjlg7oNU8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Bjorn Helgaas Subject: [PATCH 5.4 45/92] x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect Date: Wed, 11 Dec 2019 16:05:36 +0100 Message-Id: <20191211150242.248948929@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191211150221.977775294@linuxfoundation.org> References: <20191211150221.977775294@linuxfoundation.org> User-Agent: quilt/0.66 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 From: Kai-Heng Feng commit 7e8ce0e2b036dbc6617184317983aea4f2c52099 upstream. The AMD FCH USB XHCI Controller advertises support for generating PME# while in D0. When in D0, it does signal PME# for USB 3.0 connect events, but not for USB 2.0 or USB 1.1 connect events, which means the controller doesn't wake correctly for those events. 00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7914] (rev 20) (prog-if 30 [XHCI]) Subsystem: Dell FCH USB XHCI Controller [1028:087e] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Clear PCI_PM_CAP_PME_D0 in dev->pme_support to indicate the device will not assert PME# from D0 so we don't rely on it. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203673 Link: https://lore.kernel.org/r/20190902145252.32111-1-kai.heng.feng@canonical.com Signed-off-by: Kai-Heng Feng Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- arch/x86/pci/fixup.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -589,6 +589,17 @@ static void pci_fixup_amd_ehci_pme(struc DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x7808, pci_fixup_amd_ehci_pme); /* + * Device [1022:7914] + * When in D0, PME# doesn't get asserted when plugging USB 2.0 device. + */ +static void pci_fixup_amd_fch_xhci_pme(struct pci_dev *dev) +{ + dev_info(&dev->dev, "PME# does not work under D0, disabling it\n"); + dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT); +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x7914, pci_fixup_amd_fch_xhci_pme); + +/* * Apple MacBook Pro: Avoid [mem 0x7fa00000-0x7fbfffff] * * Using the [mem 0x7fa00000-0x7fbfffff] region, e.g., by assigning it to