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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=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 v10 15/22] ACPI: platform_profile: Only show profiles common for all handlers Date: Thu, 5 Dec 2024 21:19:11 -0600 Message-ID: <20241206031918.1537-16-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241206031918.1537-1-mario.limonciello@amd.com> References: <20241206031918.1537-1-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: DS2PEPF00003445:EE_|PH7PR12MB5712:EE_ X-MS-Office365-Filtering-Correlation-Id: c73f2996-6e7b-49a5-96e2-08dd15a5ba49 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?bFRNTFFZNWpoNjRKaDMzVXh5WTBacU5ieGlpNlg4VTRpamFudUYxN0pxSFRp?= =?utf-8?B?VkFwZHJDdDZ1bDRtQUxYOWVUSlNpaFdxTGFmQ2c1QklXYVdZNjAzakVOZVFI?= =?utf-8?B?ZVNlajhkSlY2dFIwd1VuV3RzR1JXUGJkb2pEcDJ2amtKcUR1QnplSTN4STJj?= =?utf-8?B?dUU5UGdiNnFqYmc3UEdENHVVZ096eGJ6NkVJY3BRZ2kwbkdIZHY1b2YybmVP?= =?utf-8?B?YjF4MDVrRkgvc1dWS1ZqS0tBMG82QWlnS0hRWURyZUhQS0pHYVlHQmllSUty?= =?utf-8?B?WjB1VUJ0UC9HYVpzdVpIQXcyWE9FQU81L0xrL0piU1FSRWI0bXZuTVpMQzI3?= =?utf-8?B?em9yRWkwVnlvVGtxMXliWm5aa1N5STRvS051NTg2NXY0eGZCTm1PdjRMMlNi?= =?utf-8?B?bUNRMEkwTlRHOG9WN2NmemV2NGZYZzlxNS9zMHpTL1dnNGxmVVZLU0lKeGxM?= =?utf-8?B?N2Y4bzNSNnNXc01uS0tqQW9sYzJTRnRweU1MRHl2cVpUbHFCU3NoYWZxSERZ?= =?utf-8?B?aFJZazE1azYzSUlzbHFEZkw3UndoZzFQWi9ONnpXUlFKRjZSN3ljRkIxRDlj?= =?utf-8?B?aWxET3dhdFNmdWxQdzFkQUY3M3ZiQUIwcFdKdHhzNGcwRTFYWWRaTlRlNVFQ?= =?utf-8?B?OUpOdkJEYVB1Vnp5OFdVemhScG9hWlBYTytmT01PK2R5Y2ROaS90ODFVa1Ny?= =?utf-8?B?U0lpK0JmSXZ0RFJiZVpGV2V1RnZvbm1HQ2JSbzFZS1EzbTdHeTN3dXpOaEVY?= =?utf-8?B?VXFLVE94dnl3NG9sMnN0K1JlSmszR3dQNC9EREtoN0gwS3NsRWs3Q1o0Ykdm?= =?utf-8?B?MVZOdTU2M3QwS1hkb01ndHFOWkhTVnl6aFB3RnJjOHJXdW5vM1AvYW1MV1Uz?= =?utf-8?B?ZjI1QktkTmtvNVhKaDd4bC9UZGQzRkw1V3hFQXc1bGYrS3FPcmhDVXdPOHpT?= =?utf-8?B?bEgvSXlpNWxCTzBzK0lDb3NQR1JQWjFwNUYvcjd1NXFLODhiVzJVTHBWbHAx?= =?utf-8?B?RHZQaEI5NVdiTVVFTFJvY3Y2WTROa2N3NTJaOGlGOUV0YlgrOW9VY3hYSW43?= =?utf-8?B?KzBuNVZ2cGlsQkNFa21OZ2hlUTRaeXhQMy84UjZlUFpudkF4QXhJaHZBQThh?= =?utf-8?B?eUplSVhMR3gwZTVmUHZTOGtGVlA2VG12NDNZcXA2MTZuQ3ovS3Y2VXRNcGx6?= =?utf-8?B?eUxjdXlGM0M1bUp1S01Fa1p0c2JRZ1ZOWmhqRXZCdW5wdXdjK1Zkc1R2a1k3?= =?utf-8?B?cjExWG5VK2RBKzd6VHdWN3ovUnJtdlNWTkhaUEpXN01SaWhEM2F4dFJzREIy?= =?utf-8?B?TXEwTTJxQVhRMkVkSEhNbUR1QVdCR0hmTFBXdkc2Ry9Rc1B4ZEJUMStia3pk?= =?utf-8?B?ZlU0WTdtRVhObFVrWVYrbE83U0doRkRmODIxQkdsWVhUVHhVZEpvdEtBb1Fj?= =?utf-8?B?UmY4S1NSUnZFRzczWWxITkZJRU1pR2tuNEtpYk1peXpqVmxBMnNjVktLK20v?= =?utf-8?B?N0ZiYTJaRkZPblQxOTZOUGNqSTFHWXJaV1Y4U0ZKVDFSRjc3UE95RjhWQmRV?= =?utf-8?B?bytybVgzL0RFRm8yaFA5a0xWTThNeC8zMHh1UWFDMDJ1UVhhVnpLendkYXJ0?= =?utf-8?B?UDczVCtJQ1VhcmprWk1ERTNJc2k4VFhLWTlEM3V0SnNGc2RUdlcweWdSWlI4?= =?utf-8?B?V2RONG54bXBuTUExVjlYbEM3SWRVNFE5TnBEbmQ0bjJkaW5OR0hTdEFMN2JR?= =?utf-8?B?ZEJQY0NhZGVuSlJRYlVxZkJ1TGZyem41ejJMN3lBTGlreVFyQSs3dFFnaTUr?= =?utf-8?B?dGM2WVN5YmduVXJIQlZzQmZ2RHlVUlZqMnByTSt2WHprY3ZnUGhRY25kNVUz?= =?utf-8?B?QjNycEZpangvUzJhQUNkZ3VFcGErNzZ5Z1lhamJTdWZnM2YwWHJiRmhla2Vx?= =?utf-8?Q?DO5Y84TDFgReq1wwvuVocyDpRT+fPv+f?= 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: 06 Dec 2024 03:26:09.4556 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c73f2996-6e7b-49a5-96e2-08dd15a5ba49 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: DS2PEPF00003445.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5712 If multiple platform profile handlers have been registered, don't allow switching to profiles unique to only one handler. Reviewed-by: Armin Wolf Tested-by: Mark Pearson Tested-by: Matthew Schwartz Reviewed-by: Mark Pearson Reviewed-by: Ilpo J=C3=A4rvinen Signed-off-by: Mario Limonciello --- v10: * whitespace --- drivers/acpi/platform_profile.c | 54 +++++++++++++++++++++++++++------ 1 file changed, 44 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profil= e.c index 2a4f067c3c5c1..bdf69255ed9ca 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -198,22 +198,56 @@ static const struct class platform_profile_class =3D { .dev_groups =3D profile_groups, }; =20 +/** + * _aggregate_choices - Aggregate the available profile choices + * @dev: The device + * @data: The available profile choices + * + * Return: 0 on success, -errno on failure + */ +static int _aggregate_choices(struct device *dev, void *data) +{ + struct platform_profile_handler *handler; + unsigned long *aggregate =3D data; + + lockdep_assert_held(&profile_lock); + handler =3D dev_get_drvdata(dev); + if (test_bit(PLATFORM_PROFILE_LAST, aggregate)) + bitmap_copy(aggregate, handler->choices, PLATFORM_PROFILE_LAST); + else + bitmap_and(aggregate, handler->choices, aggregate, PLATFORM_PROFILE_LAST= ); + + return 0; +} + +/** + * platform_profile_choices_show - Show the available profile choices for = legacy sysfs interface + * @dev: The device + * @attr: The attribute + * @buf: The buffer to write to + * + * Return: The number of bytes written + */ static ssize_t platform_profile_choices_show(struct device *dev, - struct device_attribute *attr, - char *buf) + struct device_attribute *attr, + char *buf) { - int len =3D 0; - int i; + unsigned long aggregate[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)]; + int err; =20 + set_bit(PLATFORM_PROFILE_LAST, aggregate); 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 +=3D sysfs_emit_at(buf, len, len ? " %s": "%s", profile_names[i]); + err =3D class_for_each_device(&platform_profile_class, NULL, + aggregate, _aggregate_choices); + if (err) + return err; } - len +=3D sysfs_emit_at(buf, len, "\n"); =20 - return len; + /* no profile handler registered any more */ + if (bitmap_empty(aggregate, PLATFORM_PROFILE_LAST)) + return -EINVAL; + + return _commmon_choices_show(aggregate, buf); } =20 static ssize_t platform_profile_show(struct device *dev, --=20 2.43.0