From patchwork Wed Mar 24 11:13:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kai-Heng Feng X-Patchwork-Id: 12160771 X-Patchwork-Delegate: bhelgaas@google.com 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 DB032C433C1 for ; Wed, 24 Mar 2021 11:14:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88236619B6 for ; Wed, 24 Mar 2021 11:14:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231781AbhCXLNc (ORCPT ); Wed, 24 Mar 2021 07:13:32 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:39601 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230352AbhCXLN0 (ORCPT ); Wed, 24 Mar 2021 07:13:26 -0400 Received: from 1-171-92-165.dynamic-ip.hinet.net ([1.171.92.165] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1lP1Ry-0007U3-7w; Wed, 24 Mar 2021 11:13:22 +0000 From: Kai-Heng Feng To: bhelgaas@google.com Cc: Kai-Heng Feng , linux-pci@vger.kernel.org (open list:PCI SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] PCI: Disable D3cold support on Intel XMM7360 Date: Wed, 24 Mar 2021 19:13:16 +0800 Message-Id: <20210324111316.250576-1-kai.heng.feng@canonical.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On some platforms, the root port for Intel XMM7360 WWAN supports D3cold. When the root port is put to D3cold by system suspend or runtime suspend, attempt to systems resume or runtime resume will freeze the laptop for a while, then it automatically shuts down. The root cause is unclear for now, as the Intel XMM7360 doesn't have a driver yet. So disable D3cold for XMM7360 as a workaround, until proper device driver is in place. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=212419 Signed-off-by: Kai-Heng Feng --- drivers/pci/quirks.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 653660e3ba9e..8ca8153e4a19 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5612,3 +5612,10 @@ static void apex_pci_fixup_class(struct pci_dev *pdev) } DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a, PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class); + +static void pci_fixup_no_d3cold(struct pci_dev *pdev) +{ + pci_info(pdev, "disable D3cold\n"); + pci_d3cold_disable(pdev); +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x7360, pci_fixup_no_d3cold);