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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF00021F69.mail.protection.outlook.com (10.167.249.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8114.16 via Frontend Transport; Mon, 28 Oct 2024 02:02:17 +0000 Received: from AUS-P9-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sun, 27 Oct 2024 21:02:15 -0500 From: Mario Limonciello To: Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= CC: "Rafael J . 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=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 Subject: [PATCH v2 10/15] ACPI: platform_profile: Only show profiles common for all handlers Date: Sun, 27 Oct 2024 21:01:26 -0500 Message-ID: <20241028020131.8031-11-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241028020131.8031-1-mario.limonciello@amd.com> References: <20241028020131.8031-1-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-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: BL02EPF00021F69:EE_|PH0PR12MB5632:EE_ X-MS-Office365-Filtering-Correlation-Id: c6dddaea-2375-47be-a19a-08dcf6f48cab X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|82310400026|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ZOzBeZQpnBBvI2tAY8HRbAKRRg0PzC4HJMKnengqtezIkAVKGJz2erJaba6E?= =?us-ascii?Q?iyctYpHCvhunKurxE+i+JHb1WYF3YvPwpTD89TcoCnTn018XxM1gPArYjXhG?= =?us-ascii?Q?s7bVqYExK/OSbAUQzW2kotGs6z9Txi3xhpkFlLGMhWUmu/DWuxzqvSU+IjM7?= =?us-ascii?Q?oUwjmCijLmBnBcH6+255q2v18I4Poh6jJ0cIpyn9E6UH2PhN76BgcnYUDEzT?= =?us-ascii?Q?hEPPRb/kEZsGJ0FWAOuP39U7gW9/Pwr1eJ1AIJ58HktajFpRaJ1FoBNPcXq7?= =?us-ascii?Q?ppolyXdbyjHn14jA/J/bxbh7BoQzkZSNyes9uY5WAmtL2KQPPtSyd95ym0qG?= =?us-ascii?Q?1byBuReCQCWWA1ib9iQEKB4QnuaqP5+Hw4u1EOnTP+UzKSemmAF5DygsLZL7?= =?us-ascii?Q?B6i7lKV5rqZa/j7P8U7WDtxFKq8yB+hNz6aFtcB3ml9Di/oaPvA/yc9ENA78?= =?us-ascii?Q?FbuOGC0jWpfNjjQmevJ5Patornt+qlS9NCwGCAfDmfugLGVd4U9+GIs6zrp/?= =?us-ascii?Q?1G50ireyDnjaDgB1vX6RdP37yFJpUs7v2AbIn/kNPaUaNHGumiUkCDOYuKcH?= =?us-ascii?Q?VA8qp2SiMGjLCuIdfPWU0wNGr4BW1Uzv5XyE+f070VubDLF1UqCF9cGFRkYV?= =?us-ascii?Q?VyJNo5LNlnzs07/S0FB08cTzEDD6TnedUa+sOm49djVUsx9Ex84BybzOtRnY?= =?us-ascii?Q?CxmF5l2yMlT4LUN2/GiPVfOQQvPF1HjTuNjzklQrdtVvqpFI3lyI8wcYuJlw?= =?us-ascii?Q?xZlWEzKHs6m5D0S84HX+gHmzqytoKEO4D6FZ/lFdGZOl0tJ8wAj5jQgwTShA?= =?us-ascii?Q?OF9HYqf8Qkr/oxeJwZvnMDhJU7bj4wOtKcsfcuesuYmBGjXNVUf9IqZokgHq?= =?us-ascii?Q?zIbIS4cgyjfBnGRYlYHTuT4773r3MT2WCZSiTW4FKLiQSYwEfRc8+9nlWBAB?= =?us-ascii?Q?SSEtJm6e8VdvI63gOy7FodNZPBpRUT0cmZjq8QotePie+FHWe6n5U9CNZA4c?= =?us-ascii?Q?CGgNjQdW0Used9RGMOH0DKZ1CIlt2XWphNvilyT3sSnIUD2g47AkcsfJ25v7?= =?us-ascii?Q?XuLB5rFUtIdT9+15Qi4OF9S62gfFGVRtRlNg3P5Snbw7XP/noY6ymDHXiA8U?= =?us-ascii?Q?dejiRxKNByjNY0DMBUkHiMVdvcj4Mtz7scT0XFPyQHew8Ag6QTdO18W4Q/DP?= =?us-ascii?Q?P7+MDdLHUjRSdpQAvy5+0G/EUp20E5a/G4KrEHgRSCUKBcrFIgizd93kbYDo?= =?us-ascii?Q?8PrlCcVWYmVkl9R1YdE+RBAGSSnzSRsdi063lK6QrtGcsUr1OVtp2t4PKUWr?= =?us-ascii?Q?70woWgkSpscaw/DsCOtvzMAEVNqjOQn7+PMLJAm/VAtWxhuY0XvZz6yoOwaW?= =?us-ascii?Q?AVOpZ50tgfMTLQJZxjhAc6tG0bqfybGwyf22rQOpgT384MTW9g=3D=3D?= 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)(376014)(7416014)(82310400026)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Oct 2024 02:02:17.1654 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c6dddaea-2375-47be-a19a-08dcf6f48cab 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: BL02EPF00021F69.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB5632 Content-Type: text/plain; charset="utf-8" If multiple platform profile handlers have been registered, don't allow switching to profiles unique to only one handler. Tested-by: Matthew Schwartz Signed-off-by: Mario Limonciello --- drivers/acpi/platform_profile.c | 35 ++++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profil= e.c index 5fee467614eac..a83842f05022b 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -33,30 +33,43 @@ static bool platform_profile_is_registered(void) return count > 0; } =20 +/* expected to be called under mutex */ +static unsigned long platform_profile_get_choices(void) +{ + struct platform_profile_handler *handler; + unsigned long seen =3D 0; + int i; + + list_for_each_entry(handler, &platform_profile_handler_list, list) { + for_each_set_bit(i, handler->choices, PLATFORM_PROFILE_LAST) { + if (seen & BIT(i)) + continue; + seen |=3D BIT(i); + } + } + + return seen; +} + static ssize_t platform_profile_choices_show(struct device *dev, struct device_attribute *attr, char *buf) { + unsigned long choices; int len =3D 0; - int err, i; - - err =3D mutex_lock_interruptible(&profile_lock); - if (err) - return err; + int i; =20 - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) + choices =3D platform_profile_get_choices(); =20 - for_each_set_bit(i, cur_profile->choices, PLATFORM_PROFILE_LAST) { + for_each_set_bit(i, &choices, PLATFORM_PROFILE_LAST) { if (len =3D=3D 0) len +=3D sysfs_emit_at(buf, len, "%s", profile_names[i]); else len +=3D sysfs_emit_at(buf, len, " %s", profile_names[i]); } + len +=3D sysfs_emit_at(buf, len, "\n"); - mutex_unlock(&profile_lock); return len; } =20 --=20 2.43.0