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Wysocki" CC: , , Len Brown , Robert Richter , , Subject: [PATCH 06/15] PCI/ACPI: Link host bridge to its ACPI fw node Date: Wed, 31 Aug 2022 10:15:54 +0200 Message-ID: <20220831081603.3415-7-rrichter@amd.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220831081603.3415-1-rrichter@amd.com> References: <20220831081603.3415-1-rrichter@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2513867e-e42e-41ec-0c6f-08da8b292af4 X-MS-TrafficTypeDiagnostic: CY5PR12MB6153:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230016)(4636009)(396003)(376002)(136003)(346002)(39860400002)(36840700001)(40470700004)(46966006)(26005)(2906002)(36860700001)(82740400003)(82310400005)(2616005)(426003)(40480700001)(47076005)(1076003)(186003)(16526019)(336012)(40460700003)(316002)(54906003)(8676002)(70586007)(70206006)(4326008)(110136005)(36756003)(41300700001)(81166007)(7416002)(356005)(5660300002)(8936002)(478600001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Aug 2022 08:16:55.5028 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2513867e-e42e-41ec-0c6f-08da8b292af4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT098.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6153 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org A lookup of a host bridge's corresponding acpi device (struct acpi_device) is not possible, for example: adev = ACPI_COMPANION(&host_bridge->dev); This could be useful to find a host bridge's fwnode handle and to determine and call additional host bridge ACPI parameters and methods such as HID/CID or _UID. Make this work by linking the host bridge to its ACPI fw node. Signed-off-by: Robert Richter --- drivers/acpi/pci_root.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index d57cf8454b93..846c979e4c29 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -1083,6 +1083,7 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, goto out_release_info; host_bridge = to_pci_host_bridge(bus->bridge); + host_bridge->dev.fwnode = acpi_fwnode_handle(device); if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)) host_bridge->native_pcie_hotplug = 0; if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL))