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Jones" , Ike Panhc , Henrique de Moraes Holschuh , "Alexis Belmonte" , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Ai Chao , Gergo Koteles , open list , "open list:ACPI" , "open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER" , "open list:THINKPAD ACPI EXTRAS DRIVER" , Mark Pearson , Matthew Schwartz , Mario Limonciello Subject: [PATCH v4 07/20] ACPI: platform_profile: Use guard(mutex) for register/unregister Date: Tue, 5 Nov 2024 09:33:03 -0600 Message-ID: <20241105153316.378-8-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241105153316.378-1-mario.limonciello@amd.com> References: <20241105153316.378-1-mario.limonciello@amd.com> 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-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-TrafficTypeDiagnostic: BN2PEPF000055DF:EE_|DM4PR12MB6542:EE_ X-MS-Office365-Filtering-Correlation-Id: 62af7fc0-497e-478f-c653-08dcfdaf38a7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?TFVCTm9WeHZRU0lzNzJlUmtGS2cycVhSWU1XekJMNHVlUHNscGdJNklMUWly?= =?utf-8?B?Tzc3Q09qTFNXZnRReVRXWWY3N1N1Q3ZSaVVXNE5IMFFKYk50K0hLRnh1ZFRi?= =?utf-8?B?Nk9tY2szdWpYV2FIYnlsWnZ4WGNyUEZXZ2ZCZzBJZ3pqbWd3N0h5LzVoSUFx?= =?utf-8?B?WTB2cjFGTk9sVE5tekthLzBiUXRxT3NhSE1yQ2VPbXBEYW9zZFhZdWRWcml2?= =?utf-8?B?R1NDMnI0NkpBRHJXaEpDb0FpN1g3cVp5b0J6Rm92ZGs4OWdsdi9UVFhKMWJM?= =?utf-8?B?NWpML1hrY1hHSllTSGJhMlI1U001N2JVUTV5MXRwL1llSTFYM1dTYTRVV3o4?= =?utf-8?B?dVBadXdXRGNlUEZWRHh1UWkrdEFIMzNNNjFvN3VWWko5aVZHa1BiQk93RElC?= =?utf-8?B?b2dKb0NOclM4ckFOaDg5RHd1SkdIVy9MS3lFMWlvNW1xV2VINEE0M1BVeGZK?= =?utf-8?B?Tm9vTVFZTjBuVDhPci9kSmFQMCtEQkdwRjU2am4zYTYvcGNwS3Z0U21Dei80?= =?utf-8?B?SjE4YlFMaFFVV2dBbFhPRjhwcWFtK3loemJ3MDRMSnlibnVXYldER2VwOVhj?= =?utf-8?B?Z2h5SmY5SG9XQ3pUZkczSU1CcXpJZzZQeWZhcVB4WklIY1VMUmcrSmMydUhq?= =?utf-8?B?MjUrbHBjMEJyT3BtRnlhM0VzejAwZitTTjRzMVlmRmhsbUx3cnIrZTNxYTBl?= =?utf-8?B?LzY3bC92aUNXcHVJc0V2VnRFS3RaclNkL0lETVM4enJTMk9DTko3TWVTMExx?= =?utf-8?B?TTZpWVViNW0vL093NWZ0TXFON3hmWkVMZTVpSFRjSGxFaXc5VEVuUUhIVGZG?= =?utf-8?B?Q3d0NnNiU0JEWkRNN0JXSER1OEt2UUhTdmI1eU9jZmw2eU5waHpzSnRmMm9C?= =?utf-8?B?SXMvbHZHcm9ldTgwdDVCV3VvVk1qR1V0cldlZGEwRW1LZ2xocWZYRXI1Z0Fl?= =?utf-8?B?NEZMZkVFY0RrY0JKandpWXJyN0UyME1WZG9mNXlMblpXWmYxUlJYbVhGVWVF?= =?utf-8?B?R0F4eFZSYjFRYURSODYrbzJRbndiYVBwYjhwcm5SSVlabmFmckpFWHlCUDdS?= =?utf-8?B?aktocThFeFZKR0IvZFBHOWdIYjl5ZHF6QTVPRU1yODhIbnpmL3ozdFU2eHdv?= =?utf-8?B?WTlUMUtTZFFWVVpFOEViUnFtL2JmaGs0WHk0Q28wZzVCSE1hQUVJNmsrS2pz?= =?utf-8?B?SjVVbVUxbkl5RTUvY0FCUTRsZ09oL1Y0STU3M1luNnJpVTZzTStMb2pUS2dZ?= =?utf-8?B?MHZSMmt2cnJGbFRFNEVhN043bm9Rd0xueHRXUXhYTE0rbmR2MW5YQVdnd3FX?= =?utf-8?B?TkNKMHp3UENzUTlPdENhWUZUS3FMdHBtdWxZUmJXZzN4dGxZYzBGMkE5ZFJp?= =?utf-8?B?NFVob2I4Y2RNd0FWeXFGenhLdEl5aWpzQnhjMkVTRHZuVzgybUo2K1pteURu?= =?utf-8?B?QWkvc0lrNXZIU3I2MzB0L3FQYTBwRFNEbUFGVTlkbnlidVZ6elBrNWF3MFZI?= =?utf-8?B?NExINUlJUTVvbVZCNzYzdFpGWlU5NDlFV2phNXpQdFpFU0diZXlVRUZmYUV5?= =?utf-8?B?b1FzSjNXVS90OUFtMHljWnFPOXNodW8xMTVvODN3dTRCNDZUUkkxRFI1dFBV?= =?utf-8?B?VmNyQjZKVjNnSjZOcDRJb2h1Uis2dHZQQk9Cc0xFYTRZcFlUOEZ3a0xMMG1O?= =?utf-8?B?NjNZRjhCVVIyeTVJRkFoYW1yWTVWcGQyNE4yUmo2Vm8zWFFVU1pvc0pXRGda?= =?utf-8?B?VU9JYUJ3S2hKbXhaTmU1NVdLcjBLZGlpZmk4OVV0MVc3RnBsbU5sT2I2Ukxn?= =?utf-8?B?ZCtVSC9ReWh1Wm9YRW1sczViOXZER3F2WXlBLytqR3AvUXhzemoreGc1b0d0?= =?utf-8?B?aDliSUM3Ri9KUm03UGljeVMyMklPYlQ2SU1YNzN1aUUzVUE9PQ==?= 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:(13230040)(376014)(7416014)(36860700013)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2024 15:33:39.0766 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 62af7fc0-497e-478f-c653-08dcfdaf38a7 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: BN2PEPF000055DF.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6542 guard(mutex) can be used to automatically release mutexes when going out of scope. Tested-by: Matthew Schwartz Reviewed-by: Hans de Goede Reviewed-by: Mark Pearson Reviewed-by: Ilpo J=C3=A4rvinen Signed-off-by: Mario Limonciello Reviewed-by: Armin Wolf --- drivers/acpi/platform_profile.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profil= e.c index 70e7f1ba68676..4454c4a903c8f 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -188,32 +188,26 @@ int platform_profile_register(struct platform_profile= _handler *pprof) return -EINVAL; } =20 - mutex_lock(&profile_lock); + guard(mutex)(&profile_lock); /* We can only have one active profile */ - if (cur_profile) { - mutex_unlock(&profile_lock); + if (cur_profile) return -EEXIST; - } =20 err =3D sysfs_create_group(acpi_kobj, &platform_profile_group); - if (err) { - mutex_unlock(&profile_lock); + if (err) return err; - } =20 cur_profile =3D pprof; - mutex_unlock(&profile_lock); return 0; } EXPORT_SYMBOL_GPL(platform_profile_register); =20 int platform_profile_remove(struct platform_profile_handler *pprof) { - sysfs_remove_group(acpi_kobj, &platform_profile_group); + guard(mutex)(&profile_lock); =20 - mutex_lock(&profile_lock); + sysfs_remove_group(acpi_kobj, &platform_profile_group); cur_profile =3D NULL; - mutex_unlock(&profile_lock); return 0; } EXPORT_SYMBOL_GPL(platform_profile_remove); --=20 2.43.0