From patchwork Mon Oct 26 18:56:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 11858385 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C7F0714B2 for ; Mon, 26 Oct 2020 18:57:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF93F22242 for ; Mon, 26 Oct 2020 18:57:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1783514AbgJZS5I (ORCPT ); Mon, 26 Oct 2020 14:57:08 -0400 Received: from mga18.intel.com ([134.134.136.126]:46460 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1783214AbgJZS5I (ORCPT ); Mon, 26 Oct 2020 14:57:08 -0400 IronPort-SDR: CTaCBP5upYd7NRs0oV3s1Xp3JIheMEXC8G459BoffeZe6Yxfb8ssHz/DumtAnPCZb14rJ+9OpY l6cKYMavFVnQ== X-IronPort-AV: E=McAfee;i="6000,8403,9786"; a="155752386" X-IronPort-AV: E=Sophos;i="5.77,420,1596524400"; d="scan'208";a="155752386" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2020 11:57:07 -0700 IronPort-SDR: 15F2yqHjNs2FiJ64nFI+beVytYDa8Fha+tRdffFVd6WOmBD3voLrHOELcXnY+xbiK4eat46D7d 9sfwzbxVks6g== X-IronPort-AV: E=Sophos;i="5.77,420,1596524400"; d="scan'208";a="525607171" Received: from dhrubajy-mobl.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.254.101.53]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2020 11:57:06 -0700 From: Kuppuswamy Sathyanarayanan To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, knsathya@kernel.org Subject: [PATCH v10 0/5] Simplify PCIe native ownership detection logic Date: Mon, 26 Oct 2020 11:56:38 -0700 Message-Id: X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Currently, PCIe capabilities ownership status is detected by verifying the status of pcie_ports_native, pcie_ports_dpc_native and _OSC negotiated results (cached in struct pci_host_bridge ->native_* members). But this logic can be simplified, and we can use only struct pci_host_bridge ->native_* members to detect it. This patchset removes the distributed checks for pcie_ports_native, pcie_ports_dpc_native parameters. Changes since v9: * Rebased on top of v5.10-rc1 Changes since v8: * Simplified setting _OSC ownwership logic * Moved bridge->native_ltr out of #ifdef CONFIG_PCIEPORTBUS. Changes since v7: * Fixed "fix array_size.cocci warnings". Changes since v6: * Created new patch for CONFIG_PCIEPORTBUS check in pci_init_host_bridge(). * Added warning message for a case when pcie_ports_native overrides _OSC negotiation result. Changes since v5: * Rebased on top of v5.8-rc1 Changes since v4: * Changed the patch set title (Original link: https://lkml.org/lkml/2020/5/26/1710) * Added AER/DPC dependency logic cleanup fixes. Kuppuswamy Sathyanarayanan (5): PCI: Conditionally initialize host bridge native_* members ACPI/PCI: Ignore _OSC negotiation result if pcie_ports_native is set. ACPI/PCI: Ignore _OSC DPC negotiation result if pcie_ports_dpc_native is set. PCI/portdrv: Remove redundant pci_aer_available() check in DPC enable logic PCI/DPC: Move AER/DPC dependency checks out of DPC driver drivers/acpi/pci_root.c | 37 ++++++++++++++++++++++--------- drivers/pci/hotplug/pciehp_core.c | 2 +- drivers/pci/pci-acpi.c | 3 --- drivers/pci/pcie/aer.c | 2 +- drivers/pci/pcie/dpc.c | 3 --- drivers/pci/pcie/portdrv.h | 2 -- drivers/pci/pcie/portdrv_core.c | 13 +++++------ drivers/pci/probe.c | 6 +++-- include/linux/acpi.h | 2 ++ include/linux/pci.h | 2 ++ 10 files changed, 42 insertions(+), 30 deletions(-)