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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 v5 06/20] ACPI: platform_profile: Use guard(mutex) for register/unregister Date: Thu, 7 Nov 2024 00:02:40 -0600 Message-ID: <20241107060254.17615-7-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241107060254.17615-1-mario.limonciello@amd.com> References: <20241107060254.17615-1-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: CH2PEPF0000014A:EE_|CH2PR12MB9519:EE_ X-MS-Office365-Filtering-Correlation-Id: d38d4228-dc94-45ed-99e1-08dcfef1eba1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|376014|7416014|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?B?alpIcGNyemxtZWJYOFpBeVdQSjBuWnRqQ1VjTnRUeEhlSjY0Mk9sVVc1dmJC?= =?utf-8?B?dmVKRSs0ck5sS1BlR0pVbnlYTnRaZVFVYVlJMlRsakR3d3RPMnpMVUhlYlVG?= =?utf-8?B?dzlJUkxoUUhyNDZhN2ZaZHN6aVBBaE9yZUtTbUJpZldUTVFiMllGVEd5dUpF?= =?utf-8?B?MitxTm5BdnM3Wmp2RWZNL2YyZmlaQmdTN25VNnNVOEZXZnEwSFhSM0xNc0hT?= =?utf-8?B?NHRBVTZORlV0bWhJTkhWZzlpRkdEdXVOM3A3SzlyNSt0T0hDMkNHOHozLzFs?= =?utf-8?B?elN4elpVc3ZvRHZKMEtITGVxNE0wUWxCZmFabmJGc2grSE9MYnZ6Y3MvUDZ2?= =?utf-8?B?TlVSbkdadHdzdW5hYmZ2aG14bFdiakl5QnpxWndKRXZyWFVYSzRSUGtubTFl?= =?utf-8?B?TFQ3eXRldVVORGk0UitvVTRBbkRSN0Y5YXBVVXF3RCtaTlFXSXdDOFZFTHZq?= =?utf-8?B?ejJmQitaU0c4S2xtbGRGeXRJNjZZdWxLdUZpeHhLTzh2VXUyRG9RcUZMUkcy?= =?utf-8?B?b2t0SVNTMmtNbWF0elVuY0l2ZGhzZno3V08ybWZsWk5IY1VmOHc0ZFhUUGFV?= =?utf-8?B?N0R6Rmx5TkdObmN6aU1mVnNlRzUxRlMxeHJjcW81emFsYkJOZ2RWWDRzeEVy?= =?utf-8?B?MzliSW9DYXErSkJqVE4vV0xFV1lXYkdiY0JHMVJvYVlMc084eDgvV0oxdVN4?= =?utf-8?B?Zkg4Qk5ySUgxRFU3SllEWmxSQWlZL04vVnZibUNueHJKeFIzS1FZZnpBRStz?= =?utf-8?B?NFJCdFRrNFAzT0FyY0tYekN6OTUxdkdadCtNN09BUkkwY2t5YUIxYksxMUVX?= =?utf-8?B?MWNIR09VdTk5bUZmampmcjFSbFMyejVXSGdadC82VnJEVkE0bGl3OWtkVnNt?= =?utf-8?B?OW5TdHB3aHNUUXZoVlhPSFlHNE9LbFpmNDFxbnF5clR2SHhGYjY4dld4Mm5M?= =?utf-8?B?eDY3eE1zeFVSa0xieWhHa1pZb3BmazlFWnRsY1krNFpSd0ZNVjErMnYwWTlt?= =?utf-8?B?ZzZFMjdQRXY3VHRBTHZmaFd1NE1obEFvL2RhdThpbkNhdnV5eTNaR2RQVW9B?= =?utf-8?B?ZmVaSFh5MDJwczVRT0dGeTlXRjczcmRwTU11dHVmU0lVbDhUTVRJaGpORlFp?= =?utf-8?B?RFFxV2tydU5tSDFJUGgvWll0eXJTdkNFbWNHc250Zm5OWWRzMFNvV1JUUzZh?= =?utf-8?B?Z3NwRWViZTdMLzI3WDNQQUZWdm5EbHBpUmYzUW83YVpicXExSlpVQVMvMVFk?= =?utf-8?B?bWlDWFdmZnpGWGF1QXEvNTdBNlBqQ1BudE1mOFg0K0pXUFNGM1NQNWNMY3lH?= =?utf-8?B?YVVRenhEOVVWZjJIYklSZFY4UHhhRkVhZ2xmSnN1OGk3b2tsVXMzSEFybTY2?= =?utf-8?B?VW9BWWJONnlMdlQrMVl0aGZxWHRrUFU2a1ZZTUhKK29Sd1phWFM1WTdxYlpM?= =?utf-8?B?dmoxOGJ0MXJ6TWFibTg1cWhadCtLYUFqbnVLd1pzZUt3OU5zSWE0UEMxZ3pk?= =?utf-8?B?VFBRVXhHM2tnSC82cWZSL3dFLzdyMHNscGRTb3B6TjVjeWZCK1lNRVJRVHJn?= =?utf-8?B?Qk5lWFJFZGxRcTc5SXJmVytadGFpZzRGbDlxRjZidEhYK2dwSCtTUDRZMHlW?= =?utf-8?B?YUl0WTM2Z1RBSkZBL3dwMFZNeHVIWi9vNkVCLzcxSE5tOWZlTmo1S3Z2YS9w?= =?utf-8?B?bHV2TUhzZEQvVTRxMlViRG5WdFlsdW8wcWgzbUdjeGUwU0xTQnRqYWNSRU90?= =?utf-8?B?YUk5SFM3OVVuSVg1bVhxUm42RDV5ZW1qaGpPbHg4SlFjMHV4dGN2YkhyaVQ5?= =?utf-8?B?UkUzSUZNVzgxRXVvb1NKc05jNjA1WFZuZlFPZGcxMHZaMFhXWW1wOUkydnFE?= =?utf-8?B?ZERuK1QvOVc4cmo1OG4rT2FMMUZ5dEtET1dOUlA5TFpUL3c9PQ==?= 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)(1800799024)(36860700013)(376014)(7416014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Nov 2024 06:03:37.2015 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d38d4228-dc94-45ed-99e1-08dcfef1eba1 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: CH2PEPF0000014A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB9519 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 fbdf3cdf1141d..548eb99253958 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