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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 , Armin Wolf Subject: [PATCH v7 08/22] ACPI: platform_profile: Use guard(mutex) for register/unregister Date: Tue, 19 Nov 2024 11:17:25 -0600 Message-ID: <20241119171739.77028-9-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241119171739.77028-1-mario.limonciello@amd.com> References: <20241119171739.77028-1-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: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD6:EE_|DM6PR12MB4219:EE_ X-MS-Office365-Filtering-Correlation-Id: 976cc9e1-d22b-4d36-4ffd-08dd08be90b2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|36860700013|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?B?VEhVZ1NsR2ZYUUxheWROQVJ3VVNmWVhXbnIvV0pqQzFPTTQyN2FyVEhxVGox?= =?utf-8?B?azAzWkpEVWx2bTdiT2lpUXE5LzRWWmdBSHNENVBsUVVkRmtaSkZmMHhJZFFX?= =?utf-8?B?azBkWXNhMUV5aHN0RlJISTZQVVZBUHI3c0g3cmlZVXFkR1IvUTJSZTJJL0dr?= =?utf-8?B?WUdGaGZsbDlHdG1jdnVWK3dPUU9zT1VYL1dkQUp0NjJiRjVFYmlHaWZzSTFz?= =?utf-8?B?SWNpSU1mWVFlZWNJMXVTcGJwdFprclA2Z3NxcFJ6Z1BrbWpBaG1ZVXhSS2Mr?= =?utf-8?B?enkzNXNaRzBWci92SGNWUUFBelk5ZzlWdTNQc3RVcGJKdVF3cmpEVXNJWmtD?= =?utf-8?B?M3FISjBPZ1ViMXd6VnFyQ3E4c3JaSS9PeXpNUU9ud3loYXgrK3liYnlvdUVw?= =?utf-8?B?cnhCQXYySHAwM0kzZVFXZERERzZWTXpSaXRoNDl1MzhZZmZoMFhGSXhwQ2xY?= =?utf-8?B?c0t3K21FcGdoRHhYUmRsS0hLQVF6VytxOGV1STdRamNONC83RHRYcmRjWWx2?= =?utf-8?B?dHJuZ3hzRDZJM0MxWEYyeUJRV0hlVDloQjdXWlV4Tm1QN0tpaWhGdHZkUW1Q?= =?utf-8?B?TjhVNVh0VXFLUzhyK2Ird0FodWQzMEo2ZHVWZjVYZUFtVW9VRE5wTnZLNDJH?= =?utf-8?B?ZStpVzh5VEJsQmc3RWdSa3dmMWx1V2ZZZVBpY3NsNmEzelROZkRYNkhDQVd5?= =?utf-8?B?a2YxZVlUemRvWWxLbTV1SFNqL0pTNTRaWTduRHhNbUM2cSt6K1ZmMUs4akMr?= =?utf-8?B?UHg1eUQ2aFpBYmU4QXYzSHJ5YmN5SGJQWDVpSzM0UVBUanlyenBtQTFjSnhZ?= =?utf-8?B?RE5kZ3JSbzUySklwa0NRVzQyajVHc3dQRnZzSC9Ra3hBTnluWGFHcTdNdGxI?= =?utf-8?B?RWgwYk5yM3ZtR2FZbUgydEZUR1VRejRLRGVpODJ6WnZMRFprZEtNK0gvdmlH?= =?utf-8?B?ZTdDa0FZVUZhbGM3NkxVUjZNam1rRlJiemh5Um1LTXZ4YVd1UE83UFVwRW0r?= =?utf-8?B?OWUzeHNZdDdBTUNCaUJLNkFycHp2N0R2MTlwQzJVc2ZCUDVJVTlvVXRYamNC?= =?utf-8?B?SUY2QkN2RDh6TG5oeExaQnJsSkc3Z0xFTE5IVmx3aVk1V0JyRGt5L0dOaUkr?= =?utf-8?B?ZFBsTExlUGsxMTIyQUlOL2t5cWczRFpyNmEzS3BkdE0wd0hUb2t2S3pIcGcr?= =?utf-8?B?czMvamVRbnRjblB2YXlyRmFCVHBKTW1IZWR0ZmZtMnhJOXBNcmM5ald0ZCtt?= =?utf-8?B?cVNhMWg5MnduTGQ5WTFhbnR0MjRJRDhKY05DQk9ka3pGRG9GS3NvRnIyVDB4?= =?utf-8?B?Tk9EWlBTZHQ5eGtBRERKakpkUWtCMy9RamhLbWV1c29zOFFRakVKQnJZZnBs?= =?utf-8?B?VWRvbTdDWGJ6RjNFQU1LN1RocFBHczFtOWM2Nm8vQTlEV2pWT1oxY2FVOElY?= =?utf-8?B?cUwzdUZzbUZhN3VQMUlQYThKclhNb3BoSzF0YnErMVJBTXFXV3MvMzRNV0lo?= =?utf-8?B?dmhvWTVlcTRpSmRBL1JkWDBrZTJDQTlaYnJUdDVjTk9vKy9DK2h4eDhleUZS?= =?utf-8?B?TS83cDdEaUFCS0paVHBjTVFPdXUyWk5JSHNpd3Fnc0I2OFdhNHRoV2hBcWZv?= =?utf-8?B?V3BnbWdYblMySTJmYVlNTDU5K0hTRlEzQklaTkxmdjMrWnhOb2l3TmhlRDkw?= =?utf-8?B?N1BXN3hxSndvTzJOaXFyNmNxZlhsOFNHZEVpZDJ2dEhUM2FkbXUzODJhWW5N?= =?utf-8?B?TURFVzhpRXFvbHdiUURVZGdidHQxcHVobWk2K1lzT0JOVWJldTNJVTNQUHFj?= =?utf-8?B?ZEpkUjlZWFJ0V3dxd0dCQlNqNmVSUWpGMHJxTWJ6RUVuaThQbkxSMW5jTlNs?= =?utf-8?B?RFZuY2FmdDkwYkZNUW1vTHMrQmo4YlpibEx0QytVNkFBUVE9PQ==?= X-Forefront-Antispam-Report: CIP:165.204.84.12;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:atlvpn-bp.amd.com;CAT:NONE;SFS:(13230040)(376014)(7416014)(1800799024)(36860700013)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Nov 2024 17:21:11.9173 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 976cc9e1-d22b-4d36-4ffd-08dd08be90b2 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.12];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EDD6.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4219 guard(mutex) can be used to automatically release mutexes when going out of scope. Tested-by: Mark Pearson Tested-by: Matthew Schwartz Reviewed-by: Hans de Goede Reviewed-by: Mark Pearson Reviewed-by: Ilpo J=C3=A4rvinen Reviewed-by: Armin Wolf Signed-off-by: Mario Limonciello --- 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 45ffd85a71dd5..9729543df6333 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -184,32 +184,26 @@ 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