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Wysocki" , Len Brown , Maximilian Luz , Lee Chun-Yi , "Shyam Sundar S K" , Corentin Chary , "Luke D . Jones" , Ike Panhc , Henrique de Moraes Holschuh , "Alexis Belmonte" , =?utf-8?q?Uwe_Kleine-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 v9 08/22] ACPI: platform_profile: Use guard(mutex) for register/unregister Date: Sun, 1 Dec 2024 23:50:17 -0600 Message-ID: <20241202055031.8038-9-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241202055031.8038-1-mario.limonciello@amd.com> References: <20241202055031.8038-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: CH1PEPF0000AD78:EE_|LV8PR12MB9154:EE_ X-MS-Office365-Filtering-Correlation-Id: 40cd4ee9-ce26-410e-ae6b-08dd129564e3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|36860700013|82310400026|7053199007; X-Microsoft-Antispam-Message-Info: =?utf-8?q?GUwgzJM4pXHdozq4VL9UzsdI2HDnGro?= =?utf-8?q?BxopqKOwINQQxdjz4x2IZvlC9n5CrI+T3q+y4A2istXt1JPMG9jJB6x9l0eEzamYg?= =?utf-8?q?Lxhz94hzos3toRrSK+be5Slz45Z0EZ2GvA1O5C7kAlaSgPzcrzgRq40xnAaP7AFaU?= =?utf-8?q?ufRb2yg9nwEsvq4A/j8GliOnX96/riMAC/bczGMb+hIKEUU5Ro15zECwK/VCLQ71O?= =?utf-8?q?8Hl4dQsY5psen59CzLjt2XCwfmRIHQYblOXBSib+tAo0FxF2nYJyyBRaYH2BPiBBS?= =?utf-8?q?6VZzwkvNIKls6FiaW5a0AFX/86SScpG2/V9LSV+Hue/TWz2y85wl25GGrka0QEE9J?= =?utf-8?q?cLRmrQpEsenWucgDNjqfus5XFhbU2a/1o1DUbrbjPYOLbL2JVfywuKDKaS7aJHrBj?= =?utf-8?q?FclGBog3d4/S/h36AuQjkIeNwmouzEoC4hIfcoT0aG8ldpvMtm5ELGu1/X/n+BxlV?= =?utf-8?q?Rf8hqH9bRW7zPhoFPtXiEgsDjjezp05AoR9+5XcEWla2UfAx8SukG53z2FNACWvJ7?= =?utf-8?q?hQMkYjDfizS3Y1pDMAvqedvlBFKcwClVTgaOhxVhpcKUpXSIEQeBS58bN9pzTPDRS?= =?utf-8?q?bxQ99U4ySi6nRZdNSmoL/SqwjJe22LWyUXnB4rkzJNFe7poO239w2sl8Yj6SiEwah?= =?utf-8?q?I8TOXDKTb0jMfChzaQ73AMBtlNzC+P7agt/QHZM4VFlqBHDLUr9fx/Q+5izTNya1I?= =?utf-8?q?BPJLzz0WKiK1zTRFxU8yDoA9PogATfWya6oRFOWFCXEv+bC6+2sDzxFSgNP1RVY5j?= =?utf-8?q?uKosW3xBK8512r4sycuhFZEjtqvFqfViz8Duw+ocxtMQ3TtjcZbOwtS0w+xMQMl61?= =?utf-8?q?tVp9aXYoguWWCgxXMMNpM6OIXJhucaS8dfjKtCDHiz/IYFocr3a8A3bVoO1fvyarm?= =?utf-8?q?OZfYupml67SGCFbIRHyNhzdLuftXoOzPMjTY3eOFluPg7qICY0BvqMeLnWi8S62Fk?= =?utf-8?q?c1uuZNLhhn3S3C58t9gOqMafhvyLMK9mdK8nXxCOKjiYQMnzuR6UGQrlCgU7yN4qN?= =?utf-8?q?eX8LZdsiPwmdX/XdBgT+mIjuaacfRcK9D2lpL+cbTBRFh7tsBogZcjO3wcSVMOD3c?= =?utf-8?q?C2+kgIlv5lWDqb2yp3fu9yLnm3gy7pTfDyGGpAJejjYaOjVW2at4JKsSatSDN33Ma?= =?utf-8?q?+se7VHkLbDowKStIZw8dQXVu5TeQcu5H2ismeNKjKaUN1uQMy7cPXgPiCtr8Y6Ka1?= =?utf-8?q?DmrpPUYDYJUXX1VnECkhe2FPYndhVOclTAMBsA3G4jc76GCTxK7NFbDksOw/iX/p5?= =?utf-8?q?coCq4tyWdMFopL8EkXrcgzeaov0KW2Fq75w+ad5DhSHvrTwBP6L1Uu/0sT8KxYcEh?= =?utf-8?q?v0KitrbV3GyDQmD2x612DK4l2tTYDpWAi8rb13ZEaozDQFPXT4ZsOaCqCaj13Ufrl?= =?utf-8?q?rMM3T7PNEOV?= 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)(1800799024)(36860700013)(82310400026)(7053199007);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Dec 2024 05:51:40.7767 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 40cd4ee9-ce26-410e-ae6b-08dd129564e3 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: CH1PEPF0000AD78.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9154 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 Järvinen 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_profile.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; } - 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; - } err = sysfs_create_group(acpi_kobj, &platform_profile_group); - if (err) { - mutex_unlock(&profile_lock); + if (err) return err; - } cur_profile = pprof; - mutex_unlock(&profile_lock); return 0; } EXPORT_SYMBOL_GPL(platform_profile_register); int platform_profile_remove(struct platform_profile_handler *pprof) { - sysfs_remove_group(acpi_kobj, &platform_profile_group); + guard(mutex)(&profile_lock); - mutex_lock(&profile_lock); + sysfs_remove_group(acpi_kobj, &platform_profile_group); cur_profile = NULL; - mutex_unlock(&profile_lock); return 0; } EXPORT_SYMBOL_GPL(platform_profile_remove);