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Wysocki" , Viresh Kumar , "open list:AMD PSTATE DRIVER" , open list Subject: Re: [PATCH v2 1/3] cpufreq: Export acpu_cpufreq_exit for other drivers to call Message-ID: References: <20220329015947.565-1-mario.limonciello@amd.com> <20220329015947.565-2-mario.limonciello@amd.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220329015947.565-2-mario.limonciello@amd.com> X-ClientProxiedBy: HK2PR02CA0142.apcprd02.prod.outlook.com (2603:1096:202:16::26) To DM5PR12MB2504.namprd12.prod.outlook.com (2603:10b6:4:b5::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 601a7588-27a3-4544-f0c5-08da11479fe0 X-MS-TrafficTypeDiagnostic: BN9PR12MB5339:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: kp7VX0rGwMkcM3dg9lOBbtQwej1jYe0vm98aG1b1c8btBgaxfqJYQu5pd8n2+Gn7EBwt5oT1O28UCTr7ZFj+fbrz/BfcvBpnCNrMzYBhXEHcZHfNxp4dfwQt5VWmcfAoubniGMRzfVisuQtmgFgxQQNeHihyCAWAh/T9jy1sdEIgpC9ajWANqx9N1pu3KRK9fNfPuduKM0jtpBmXco9zZkDtTPueMzK95gWeGmyUT4c467IP4pYk4Ak9svNJILU0z1bGhMsBCmuXn4999ZrV9jF1C8Th+bfnEjHeYTMTI7C0oaBPPLaAFs8rVyB+baTYLZvAcFNQK4Aard7A3gkAy7OZLLux8XPBibI99t26lJD9mtlobuYFeO39EvNeqRBMkZUeaJonNkuwe/QleYMe7yjSqzmX3oo0WwicWJhlAZWLaiBBecPSH6bqwO//JkIO/uIWaffypYrOl4NJThKxRensM2iJsA6esVdMK981wIXyKUulQnFXLCJPIPt8HUxPlDfFo7YCKcRc3HJh3SaxSuqhVA6IwOJZG26H/aKGPSFJf6XfaD9NFJeJRFZSgJatqnWdkXVhvciMMrdqSka3Xa6yDah9HirDvIHKpO7mO59QtHFAsCNqL5YYIgx04Ha4QIvFvGuqU32/eu+aUes0TQ== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM5PR12MB2504.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230001)(4636009)(366004)(66946007)(316002)(86362001)(186003)(66476007)(83380400001)(8676002)(66556008)(6666004)(4326008)(6862004)(2616005)(38100700002)(36756003)(26005)(6512007)(6636002)(6506007)(8936002)(6486002)(54906003)(5660300002)(37006003)(2906002)(508600001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?hna3ksmGCbbsZeh1MVVrqZydzhCOoWPES7APCLNnPQyhklfFIKijUaVYgTuH?= =?us-ascii?Q?MP4oaQyBHkj5Uvbf+HFCODnlVSYG0GXetaWujfxzsOmirtd9covJmAuNGUXT?= =?us-ascii?Q?JiFVjqXcHw14tV3JdrZm3aDM5Ify7Q9OxKHamBzkDblNCbZy5TudiHvPVrZI?= =?us-ascii?Q?8Hyr37KyST+CazHe1i4+PxAivgpHYe8EuRLl7v7++atkccBQUS0Szg8NErIb?= =?us-ascii?Q?Kz+yig0TIXtzg+OdPpc3BQzbvpIX+RIvKnTOLtGsBSEjKa8UdlFiwWjELnf9?= =?us-ascii?Q?oEHchfVNkjNSmd7uguKxRCyI2yKX2LIu4HCc//BYDscIuEP6pTFgRmzzRCzn?= =?us-ascii?Q?PQiXS2Ij2tAK9twrQjm3W7LmGi3FxoihZEFRb5frXDrTwKkAZRks8mJMDHzC?= =?us-ascii?Q?ri7XUzuX8ewMlP+Flh0cuCA/2ris0crM9gJPm8otbXKfZQ9SnUmctut6BXv1?= =?us-ascii?Q?+TGO8nDFMyJHDJPJCm+hzDDuFnmWGRHlLHUOnci0Xc9F2BHS6/JCQ6ha/13Z?= =?us-ascii?Q?H8hIEMkAq+1WfSEAs3HZZcSmjcHTvMtxaVZS3QvGsljF+rIcM1Up5SbYqiyW?= =?us-ascii?Q?++ZpcPX1a8PZ4i1X81qZNyt+uEN7rHJJymc7kALKANUxdv+Er6kTaWDUdZqu?= =?us-ascii?Q?cLlRFOAhKoVNpIHCf7h9dh/z6NH08mnXvnRSmKJapBxyYJ/oR33e2tCzCulL?= =?us-ascii?Q?Ue4lkO2cdo/qDlLFuZd/3PNdbmiQTiaPM7Y1OvkA8Viu33QKMFizNAAtKQda?= =?us-ascii?Q?R/NI7wsCRie/QXe/WvzP8VGxtqI7FdX1XmddqlbICERo6Uc0fQ2FcnX95m8h?= =?us-ascii?Q?lkPM+VpoA4J8JAuKHkCyRphfmRn0xtNwzdnysyFLMypQqW4NgEhrOchx/tpu?= =?us-ascii?Q?KcFQP6WqSNPRiyz3tTIqlwXF0Y600Y+8TRJEMI7ISP0MRwPHCJ3RW1KwuCmF?= =?us-ascii?Q?dEOMdK6lCW0sU/Bl2/2lkbtkzAKe/3ic5Cr0H+fFUiNkXIGgmO2e6aWe910v?= =?us-ascii?Q?k76wsG2SUyHXzy4/eN26FHQZ5L+J6RGFZ9rD3Aj8Aa5XHwG1ftn8vNHKdzMG?= =?us-ascii?Q?LXRQqMpiEjC/mABIoDAnsPafc5R0TfkBKW4RfJnZmC+GvkyMmjRfyiygRbiT?= =?us-ascii?Q?ZOgUMJLmYFrrlWRdaCk/Eid2kL9rZq5XDx8m98LO5ka6J04HPV9TxAx5G20R?= =?us-ascii?Q?cfqnLcLncydaPnHZGQnFHL7oGjOn11osmsJjawwLcSC7Nu4UlYXxIjKRS97v?= =?us-ascii?Q?d6fzt1m0Ntxib8HIO0IXi1F9/8NLgSTZh95USavV0e9l/PWSglPSppZYpPKA?= =?us-ascii?Q?gPzLh6MCvDl9dn6xUehCjLaza0EiDhXi70oRnkVj6Hf5BGhRIG4p1CPAAwBA?= =?us-ascii?Q?LB3RsKNzlpwJ/k3iseY2+GnwfVJEN8jAG+cMhDy+cSD4mhfWNxS29BoQJ1/J?= =?us-ascii?Q?o8PvfUo7rwHBBeJYJ+dpoIv+UbnzKFcILUnuJttvDqmMuEKDjgfu6zcDqJ4R?= =?us-ascii?Q?XjGCdzVIg6afz51ocQIQzkj5nTCEEcYR1vHkSy8odG2k8w2tvNvrQ1prWC9W?= =?us-ascii?Q?0vPpHnvFVBtUyfwiaYpCJNpqc7fcDakZGRRTkDqsacCs79iY8K1d0bn5or4d?= =?us-ascii?Q?5m72BRgP4joqKQ0JJjO4VF6kZTwXzjfdhbRX7CWY9Lbt5s9y6kBuYY7Xminb?= =?us-ascii?Q?utFyfAnU3yQ7oEw29j1GAzg3Le82kOykoQ1CmuyTETyzxtzllMSdnnIfUhH6?= =?us-ascii?Q?29d88eCytg=3D=3D?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 601a7588-27a3-4544-f0c5-08da11479fe0 X-MS-Exchange-CrossTenant-AuthSource: DM5PR12MB2504.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Mar 2022 05:47:35.1984 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9VIrijiRH5ZjNVs0q1n2Y6x7QJmFANuVANgdxAXm/N2DHKWkz1biXvkzvZOSvSaXSR659dtXvAUdNnECQRQHlg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5339 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Tue, Mar 29, 2022 at 09:59:45AM +0800, Limonciello, Mario wrote: > Currently, the only way to load an alternative cpufreq driver is to unload > acpi-cpufreq first. > > Loosen that restriction to allow other kernel modules to unregister a > registered driver. > > Signed-off-by: Mario Limonciello Reviewed-by: Huang Rui > --- > v1->v2: > * Export symbol instead of changing internals > > drivers/cpufreq/acpi-cpufreq.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c > index 3d514b82d055..92ac978c1c53 100644 > --- a/drivers/cpufreq/acpi-cpufreq.c > +++ b/drivers/cpufreq/acpi-cpufreq.c > @@ -1033,7 +1033,7 @@ static int __init acpi_cpufreq_init(void) > return ret; > } > > -static void __exit acpi_cpufreq_exit(void) > +void __exit acpi_cpufreq_exit(void) > { > pr_debug("%s\n", __func__); > > @@ -1043,6 +1043,7 @@ static void __exit acpi_cpufreq_exit(void) > > free_acpi_perf_data(); > } > +EXPORT_SYMBOL_GPL(acpi_cpufreq_exit); > > module_param(acpi_pstate_strict, uint, 0644); > MODULE_PARM_DESC(acpi_pstate_strict, > -- > 2.34.1 >