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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 09/22] ACPI: platform_profile: Use `scoped_cond_guard` Date: Sun, 1 Dec 2024 23:50:18 -0600 Message-ID: <20241202055031.8038-10-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: CH1PEPF0000AD75:EE_|LV3PR12MB9404:EE_ X-MS-Office365-Filtering-Correlation-Id: ea0f1eb2-96a5-41cb-9109-08dd1295660c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|82310400026|36860700013|7416014|376014; X-Microsoft-Antispam-Message-Info: =?utf-8?q?UambZL34gMZM3Rd+qhhqDkcde/0Vdn3?= =?utf-8?q?4hwY5FDIyQQ8rGzXRFystpdqLev9wWTkGUHxeECIPKFcXddFHWCc8EhWpN2MHq/ZY?= =?utf-8?q?IZR5cAM6x4EI/svUOg1o5sZFd6EPMbVBUxf+CgZxJZCKtkvsrj3fmFuZQbQkjK8Uy?= =?utf-8?q?058UhgAwbOeZuubGO8Sl5itxdeF0xzOuMKzvMt4CRF4JrHnERGD55qMEYhFWXiv6t?= =?utf-8?q?Vk85nSzPIrYIaXWV6m8TUrDDRqdWdnTfkLQhgVQ1xj+DSz5AXJuS6uv08CLu9gsCq?= =?utf-8?q?r3eufF4B841IdyifHrTmrevW263Qib42fHH0WSs7IeAa8yLp3LzhYr6BRG8tg3fdn?= =?utf-8?q?spH5OscwWDRgHJdOiqkhsFviQ5wKP+WlxNfHbUOKg+Z4YXoQ7WrhWlMf6GsYhvoWZ?= =?utf-8?q?oFh+gE69mooGVHINMshLy0VJWVbzQjuBu5RDxRlRR9M/rpTfnTRBWTKyFD/0pCYUQ?= =?utf-8?q?16xW4ciK+rSizW2umhfl9eq1WUG5cGEPUzDUYqoGJPRyukaxjmOAWiiWvQyxEw/iK?= =?utf-8?q?iCj2xPSRqVzdGszesvSiA3lsr1bhfVs1wqODzj7X6w9PpJtxZRvMU/U7H0rL+mXVE?= =?utf-8?q?JWsfxAjNE2y5fwEMAr9dU2YcMzl4J7LPod9l4v9GnTDjT1jcuzdpJAsL/Dvb99Cyu?= =?utf-8?q?aLC+FhNbHyUUjS2ouHKcZitYgikOckA51tYXfADGmQpPe6yPMuAGpLuVKnVU1qWMU?= =?utf-8?q?jMo+j6zJi4ijWvrbPi060rsWT7nHPqcrLRKP52Xhq0533FgiVGPLxufJndPZw2z0X?= =?utf-8?q?B6djcpWJiwwHhqjKkNGd6y8KcbB60gtxM/iSd7tvZX7sTNKEBTXdACsHq1i+lHtjs?= =?utf-8?q?T58nVOKHD+h1Z4kkZdbCNVbc2SJ28dT5mSxgts0oJLosHaYqmMkmpp5qPL2fm1wYT?= =?utf-8?q?58QS5elUdsQN85uIWcDKPb7yWxr9sy/mIsDL8sdd0/Sh7N4Jg2bmG0c0C84TdkgSr?= =?utf-8?q?Porj5ZvBHbilNzKmTgOwVATQVib6XW93UKoCWNtwWgkNoMWbWDpuXTiLyZI249rNS?= =?utf-8?q?z/WiDN1QGYwP32+GRjqa2WvWJhB6xL6+8WY90st3zThiP1R3fs+xy9/Dhu9EEebVF?= =?utf-8?q?9ySsFqPhKFpbvm3deaaxCFRhPZNAzPfMrHsOMRLgN5lGWKcYW+W9mDeZmZpRKrdb3?= =?utf-8?q?Zbf+0r5YfZQe9w7oYxbq6bibnDRY/kN5SwA9fHdPINxE+Ql9uK9d3XgZJQL99YRy0?= =?utf-8?q?920WdWNm3VD87URpxyfoLLaeZEGx4f7foBqsRCn53nXuRGU77gb+Y0nOPzv5Mku4v?= =?utf-8?q?62lWoPlCIj4Htcc5mEHqbdxS9xM9gV/+E9LPW/xSV7jn3M0jy60vsCuw6blCZ6p4h?= =?utf-8?q?z2VCSVuHT9QXhk6Qgbuqrl+qOif0IjmciOZaltqy0yLXqotmGEe64TVkRINAgGXML?= =?utf-8?q?zfelhqQMtIP?= 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)(82310400026)(36860700013)(7416014)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Dec 2024 05:51:42.7223 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ea0f1eb2-96a5-41cb-9109-08dd1295660c 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: CH1PEPF0000AD75.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9404 Migrate away from using an interruptible mutex to scoped_cond_guard in all functions. While changing, move the sysfs notification used in platform_profile_store() outside of mutex scope. Reviewed-by: Armin Wolf Tested-by: Mark Pearson Reviewed-by: Mark Pearson Reviewed-by: Ilpo Järvinen Signed-off-by: Mario Limonciello --- v9: * Simplify platform_profile_choices_show() --- drivers/acpi/platform_profile.c | 105 ++++++++++++-------------------- 1 file changed, 38 insertions(+), 67 deletions(-) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index 9729543df6333..a1f0378f15e62 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -27,25 +27,16 @@ static ssize_t platform_profile_choices_show(struct device *dev, char *buf) { int len = 0; - int err, i; - - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + int i; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } - - for_each_set_bit(i, cur_profile->choices, PLATFORM_PROFILE_LAST) { - if (len == 0) - len += sysfs_emit_at(buf, len, "%s", profile_names[i]); - else - len += sysfs_emit_at(buf, len, " %s", profile_names[i]); + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; + for_each_set_bit(i, cur_profile->choices, PLATFORM_PROFILE_LAST) + len += sysfs_emit_at(buf, len, len ? " %s": "%s", profile_names[i]); } len += sysfs_emit_at(buf, len, "\n"); - mutex_unlock(&profile_lock); + return len; } @@ -56,20 +47,15 @@ static ssize_t platform_profile_show(struct device *dev, enum platform_profile_option profile = PLATFORM_PROFILE_BALANCED; int err; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; + err = cur_profile->profile_get(cur_profile, &profile); + if (err) + return err; } - err = cur_profile->profile_get(cur_profile, &profile); - mutex_unlock(&profile_lock); - if (err) - return err; - /* Check that profile is valid index */ if (WARN_ON((profile < 0) || (profile >= ARRAY_SIZE(profile_names)))) return -EIO; @@ -88,28 +74,21 @@ static ssize_t platform_profile_store(struct device *dev, if (i < 0) return -EINVAL; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } + /* Check that platform supports this profile choice */ + if (!test_bit(i, cur_profile->choices)) + return -EOPNOTSUPP; - /* Check that platform supports this profile choice */ - if (!test_bit(i, cur_profile->choices)) { - mutex_unlock(&profile_lock); - return -EOPNOTSUPP; + err = cur_profile->profile_set(cur_profile, i); + if (err) + return err; } - err = cur_profile->profile_set(cur_profile, i); - if (!err) - sysfs_notify(acpi_kobj, NULL, "platform_profile"); + sysfs_notify(acpi_kobj, NULL, "platform_profile"); - mutex_unlock(&profile_lock); - if (err) - return err; return count; } @@ -140,36 +119,28 @@ int platform_profile_cycle(void) enum platform_profile_option next; int err; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } + err = cur_profile->profile_get(cur_profile, &profile); + if (err) + return err; - err = cur_profile->profile_get(cur_profile, &profile); - if (err) { - mutex_unlock(&profile_lock); - return err; - } + next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST, + profile + 1); - next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST, - profile + 1); + if (WARN_ON(next == PLATFORM_PROFILE_LAST)) + return -EINVAL; - if (WARN_ON(next == PLATFORM_PROFILE_LAST)) { - mutex_unlock(&profile_lock); - return -EINVAL; + err = cur_profile->profile_set(cur_profile, next); + if (err) + return err; } - err = cur_profile->profile_set(cur_profile, next); - mutex_unlock(&profile_lock); - - if (!err) - sysfs_notify(acpi_kobj, NULL, "platform_profile"); + sysfs_notify(acpi_kobj, NULL, "platform_profile"); - return err; + return 0; } EXPORT_SYMBOL_GPL(platform_profile_cycle);