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Fri, 9 Jan 2026 01:54:02 -0800 From: Kartik Rajput To: , , , , , , , CC: Kartik Rajput Subject: [PATCH v3] ACPI: bus: Use OF match data for PRP0001 matched devices Date: Fri, 9 Jan 2026 15:23:58 +0530 Message-ID: <20260109095358.24265-1-kkartik@nvidia.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B077:EE_|LV2PR12MB5941:EE_ X-MS-Office365-Filtering-Correlation-Id: 0a4a6415-1963-43a4-2731-08de4f650f6a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|376014; X-Microsoft-Antispam-Message-Info: =?utf-8?B?YWZlZ1hnakw4YmdUdGhFVFhtdmtjVlVCaFdwYWw3NDFnUmNnbnNzTnVZbmoy?= =?utf-8?B?KzJPRWdDMzVrM3NLUEQxemsxNk1JMUhyWjNtK0lKeEFPd01vSHprWFpCQ216?= =?utf-8?B?dGhvS1oxdVVnYjliYzlNTEZOWEU3SkFhYlQ4dlp4clE2K0swOVQvYk45N0RZ?= =?utf-8?B?SDhpREtyTmtMSDNicnA4b2c4ZTFLTGhHWjlQRXk1elM5Wkp5ZkNRWlI2Q0Vx?= =?utf-8?B?MVFmSUpYbDFVN3RUcjlGdlBaSE4wS2FrZVU2aUZCOXJZWnZmbFo3c0hsajl0?= =?utf-8?B?Q2lpWXlaWnJIdGtoWCszSkkxVlF2UXpIcXdrRGFUK2NPcUNibVMxUXBWQVk2?= =?utf-8?B?b2ZrUVJnSmtBaW9qN3JyOVU4MTRWZU0rOU9PTVFXMkhETjIyZE9Jb0x6Vlkv?= =?utf-8?B?N1NIYXgwc29Qb0JDWUVJTXYyVDMzRkhnMWFNSjVIemVhdnJvS0JKR0NHdXZz?= =?utf-8?B?ZFJIMmxoNmhWSFcvRGYvUERnYkVVUTZHRnZ4K2h0VmRia3Ywd2JFcVFsZHZR?= =?utf-8?B?cXpCN3ExMUpyMzdGUFZXcGdDWmhUbHY4Sk9jdWFmMHJaWTl3dHhXdmtPOGxI?= =?utf-8?B?SlkrbEFNUjNJRFNoZk4zUkhJSmlVY1lWOUtlblpPL0w3TkNiOEZPMWNpNHpv?= =?utf-8?B?SytQakdLcXJmeVFiRGF6TXZEeUhMRkI3SktJY0lTTEI4RkZpb0RGVUdmeGxG?= =?utf-8?B?QmtoQmQwYlQzcjRUQlBpc1JMTFordFJycjUxU3VFcFFmRnAyOGtGQSthd1Qr?= =?utf-8?B?SENMZWozZm5HcHRXc1U3NkpRN25BbmtrR3k1VnJaT0krQUpVUU81b3pBc2N5?= =?utf-8?B?ZDBIMzFoUGpFVHllRCtKUUpsMVVxbC9EcTFvNzNNbUhyNWUwMWVXT25RVDhq?= =?utf-8?B?cDcyR0F2RmxXRkRtbHkxN1ZrTXlNZlNWbWdpRzJyZUtsekNWcHhDb29GWHNI?= =?utf-8?B?L3lDd3BJR1phcU5OV3NJRFBqVDJiOWRvVmhGY2l1dVJoWE5VVnd2MzFHV2s0?= =?utf-8?B?dW9OVTkyYXZTd0crb0RsN2t0SlkvUk05T0FLNFJTelR5cTFFMmdtdHJOUVpS?= =?utf-8?B?cVVaeGU5QXk0T3oyZ2Iwb3Y2aWNkZFpjeDFQRUpkYzNWaUJPM3kzNnoyM2hX?= =?utf-8?B?eVdyNjg4R3VKdHk3dUczcmcwUWtFZlRoQWZDM21EQ1d0VHpQMCtPNXJmMzNK?= =?utf-8?B?VDh1Y2phWmovR2tXUnNCM3ZNTGVxUUJrYmhkUmFOMElRZmtPckczRWhyMFpD?= =?utf-8?B?MmZBOG80ZkxvNi90OVZsNU0vNFlpVmRadjVTNnF1bVY0UzU3SDAzeGUySE9V?= =?utf-8?B?NkFoZmc4OExZT2k4RkFxbXNDanA1TVc3SUF3TEtVQkFNNTNqc2doSFFQY1Yz?= =?utf-8?B?NEErVnk5WEhPYndsZm9kM1lFNmwxSEhoT2Z4elJQazdLdXdWQzR2VFhBazZ6?= =?utf-8?B?UUpHUjUwU0xaV2RiNGRhV3dCTTV5QnRTaStmVHFyN0VrMUpKTGFOSmlZK0hV?= =?utf-8?B?bWRnUjdaUHRsT1BEZDRNdFk3TkIxejg5dG9VcFNGZllHb2dTTWVFY1M0Ulow?= =?utf-8?B?MHBGd2tOaGxBZlozQ2QyOVhYdVVrb2JsWStHRVdPNWFtWEplOFZaRVg1L3Av?= =?utf-8?B?RFBCWXhIaTZWUEVoaGc2WHJXMHlPSnpxa2NyV3Fhd2NkQ0lpbUgzMnh3dVlk?= =?utf-8?B?bDN2aHdVS1BObFY3SUNya1k5RGpjSEZwOEpQZXNtME5Xa3lKK2E2ci9Td2N3?= =?utf-8?B?TTVYNUtFbVVjd2x0OFIxN2E0Um9GY011ZlJ1LzQ3OEVQVDZjT2ZrTGhkMW5v?= =?utf-8?B?bW00ZlRrVHdwR24zdFd0bGJDTkZ0RUMraXlKa2l1d01ZSG9ESVpEMFRwUndl?= =?utf-8?B?Rkl5OXNwSDVMd21Ec2VwUWk2SGdnb2VncHNLcGY1VjRRMHZCdHlBL05NdDhL?= =?utf-8?B?VEp4M3JMSmowdUw0aFNIcnFRSThWNkJDUnJvUWV3Tkt3Q3hMYTJJSXROd3JD?= =?utf-8?B?cTJWSENVWnllTG9iODBxcGEyNEhqTjRBQ2U2Q0kxMFo2V3ZVNnFjOVc0M21K?= =?utf-8?B?SzBuVjJJZVZ5MEpOVVMwL3JQR0JMT2llZnJRaG1yR3J5cGJYdUxWdkV2SVpv?= =?utf-8?Q?xTTY=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jan 2026 09:54:20.0256 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0a4a6415-1963-43a4-2731-08de4f650f6a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B077.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR12MB5941 During pre-production development, drivers may provide both ACPI and OF match tables while a formal ACPI HID for the device is not yet allocated. Such devices are enumerated via PRP0001. In this case, acpi_device_get_match_data() consults only the driver=E2=80=99s ACPI match = table and returns NULL, even though the device was successfully matched via PRP0001. This behavior also risks breaking existing PRP0001 setups if a driver later gains an ACPI HID, as the presence of an ACPI match table changes the match-data lookup path. Explicitly detect PRP0001 and fetch match data from the driver's OF match table via acpi_of_device_get_match_data(). Signed-off-by: Kartik Rajput --- Changes in v3: * Swap arguments while comparing HID against PRP0001. * Check value of adev against NULL. * Declare variables in reversed xmas tree order. * Update commit message. Changes in v2: * Fix build errors. --- drivers/acpi/bus.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 5e110badac7b..e960df2fcea7 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1030,9 +1030,13 @@ static const void *acpi_of_device_get_match_data(con= st struct device *dev) const void *acpi_device_get_match_data(const struct device *dev) { const struct acpi_device_id *acpi_ids =3D dev->driver->acpi_match_table; + struct acpi_device *adev =3D ACPI_COMPANION(dev); const struct acpi_device_id *match; =20 - if (!acpi_ids) + if (!adev) + return NULL; + + if (!strcmp(acpi_device_hid(adev), ACPI_DT_NAMESPACE_HID)) return acpi_of_device_get_match_data(dev); =20 match =3D acpi_match_device(acpi_ids, dev); --=20 2.43.0