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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 v6 08/22] ACPI: platform_profile: Use guard(mutex) for register/unregister Date: Fri, 8 Nov 2024 22:41:37 -0600 Message-ID: <20241109044151.29804-9-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241109044151.29804-1-mario.limonciello@amd.com> References: <20241109044151.29804-1-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: SN1PEPF0002636D:EE_|MN2PR12MB4111:EE_ X-MS-Office365-Filtering-Correlation-Id: b8437734-645f-4aad-01f6-08dd0078ebd0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|82310400026|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: =?utf-8?B?QUxLcU82K1R2cklJQTlhdkV1aVk4dm9OTGJyenV0Zzh2R2VQZC9pQ3FrSmZv?= =?utf-8?B?TDg1M1pZVGN0aXJzZHhzc3RWcnlkZjcvQ2txT0xEOU9EVVozYStwTG92ejUw?= =?utf-8?B?Rlord1p5eHdIZm1PMWZVdm13c3k0VXNCcHM5YWNyMWJYN3NJbkFyeVU1QWhn?= =?utf-8?B?a1oyREUwLzFjL3dZcFlTaXUyaUU0K2hESGpqWStaWDk3WlZqK3hlRU9udFpn?= =?utf-8?B?TkVFK0cvTExKUktwQm12eVNjS2hjN3dsbUs5U0hVbDhBYlJCYWExUSt4WHJM?= =?utf-8?B?Ly9UMzRvUjhYdTRQcGdDdzh5cmtuZzFrM21vNzJwVEZHWkhYYUlnY0ppczlJ?= =?utf-8?B?RjJ6RzY5cHJTSkdQa1VCSU54Z1FjaXcxU1VBU1IyZ3kzWHlPeGxBR3FRZzhi?= =?utf-8?B?VXNTZ2FlOU52REMyYWNmb2Q2cGF1TFBoZjdXRGhWNlJWZmpSYTBSakVHdDNE?= =?utf-8?B?ZmtHTDVsYUhaTnR0ckRJYW1WdnZvMHhTeHRNQS90WDhaL0w2bTRheVRaL1ND?= =?utf-8?B?VXhTaXplVTBSQWQ0K2I5RWl1RCtHbG5OendaMHlhaklKS2M1cGpOc0hnWVc2?= =?utf-8?B?Y0ZPSCtkbFpGbmlYU3o5Ty9aL1B5KzRQVlozcmpBTVhYKzljZzlhUzR3bnhM?= =?utf-8?B?a2xhZExEZ2VLVFVOcTdGcXkxdy9acjdVem44ZExXWEhaMWQ2akQrSTdDY1F1?= =?utf-8?B?dW1KNE9VUGRjeE9uL1IvekJxZlF4ZU1FMEJ4cmY1WnUyYzVUMXJMbjZ3N0gw?= =?utf-8?B?ak5aZnhWOE5TSGU1YVdPb2dDSDdveDM3d2xNYkNFZWJRaWlGNHFBbmpyZTVK?= =?utf-8?B?SkIyaDhHZVhXYmhRNUJsS0piTjFadWZ1ck40cituTGJOTXVCaUZBZCsvWVBa?= =?utf-8?B?TlkrNzZBMGVtN3VnczA0dFIvR3dzamJoYmhYUVVxV09Qc2NnWnNjUDV5SUpz?= =?utf-8?B?T0pvYWhGNmUvbEVCQUNBclJCd2t2SDBsL3g4Mm5xenhWVjlmTmtlSGJVRjdU?= =?utf-8?B?NFNiL3dja01yY2k4eDZIOHNvNVpQTFdhSExjM0lkWkp5b1NLbFA0b0hyUHhR?= =?utf-8?B?MEQyNzdWS1k2c05QNzk1dWdkeVRlMUlGS2Fra3NUQlpldzN4YTlKQ3ZUY1hh?= =?utf-8?B?RXpuZVh1QWhjcmhwNHRNcC8reDJhbTJYWmpFMjRFUEFzY1BkNnR6MDNCN2VG?= =?utf-8?B?N3FKQjN3Ty8yOVlwOVVuTFJUeDB2M3ZScStQMkdsQWtMTkxCS2x3YjBIYlo4?= =?utf-8?B?ZlRpMHRZZDJuaFRQMk85MXIwbTF3eFBqcEJhWmFvK0s5ZjVWN1RjaVVBZkVi?= =?utf-8?B?eDNQaXEycFZmT3hocy9WSmpuS3NUZzR1RUVrTUZJSGVYdng4VnJQZ0NEbkJX?= =?utf-8?B?ZnRqaEhNRW5oSi8yZFlCRnR3alROcFdNTnZBSDFKbzdYTUhuVkdocTlzVDMw?= =?utf-8?B?eWNQUlZDbzVlWUpVU3FDNXVJaXpTVUkrVEQ4VnpuWjB5TWhFYVhEc0Npbk14?= =?utf-8?B?cWxkNkNGOHY5ZTFGc2sydEVyajhIQzVGUXdQUEVwOTVDM3NaUlFSTEpqVzJP?= =?utf-8?B?NDFqTEJKaWp1SWpIS1FPN0xwSnQxVC9XZHA4S1BDWEN0WXU1QnJqVlEwMGYz?= =?utf-8?B?T1ZUMFlNK3JvK3EvREozOXY2OXQrRklpU0J1RDRxY1Y1Um8yRHQ0UmRjV1N1?= =?utf-8?B?L1ptWXRJLzRvd2tHeVQ3aERaT3ZqNlZOaG43c2hseC9SRlE3TXU5dUcyT2Fz?= =?utf-8?B?NmZaOUU3R2hqcGticnZUdU9kK1hBb1F3Q3lNZHlHNmxkQTBtcUxrTHBPejM3?= =?utf-8?B?cHlnV0l6bVdERW1XWThLdTVHSEc3V3ovUUlVQmxoNDVHNG53T0NhdDZuTzJy?= =?utf-8?B?dXc1UVBEcWpQeVozeDhHdW1GYlZKNjd1TWd4MFlKVHplb2c9PQ==?= 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)(7416014)(376014)(82310400026)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Nov 2024 04:42:30.8050 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b8437734-645f-4aad-01f6-08dd0078ebd0 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: SN1PEPF0002636D.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4111 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