linux-kernel - Re: [PATCH] ACPI: thermal: Drop nocrt parameter

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Date:   Thu, 13 Jul 2023 10:40:25 -0500
From:   "Limonciello, Mario" <mario.limonciello@....com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH] ACPI: thermal: Drop nocrt parameter


On 7/13/2023 10:31 AM, Rafael J. Wysocki wrote:
> On Wed, Jul 12, 2023 at 7:25 PM Mario Limonciello
> <mario.limonciello@....com> wrote:
>> The `nocrt` module parameter has no code associated with it and does
>> nothing.  As `crt=-1` has same functionality as what nocrt should be
>> doing drop `nocrt` and associated documentation.
>>
>> This should fix a quirk for Gigabyte GA-7ZX that used `nocrt` and
>> thus didn't function properly.
>>
>> Fixes: 8c99fdce3078 ("ACPI: thermal: set "thermal.nocrt" via DMI on Gigabyte GA-7ZX")
>> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> Stable material I suppose?
Yeah I think so.
>> ---
>>   Documentation/admin-guide/kernel-parameters.txt | 4 ----
>>   drivers/acpi/thermal.c                          | 6 +-----
>>   2 files changed, 1 insertion(+), 9 deletions(-)
>>
>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
>> index a1457995fd41c..2de235d52faca 100644
>> --- a/Documentation/admin-guide/kernel-parameters.txt
>> +++ b/Documentation/admin-guide/kernel-parameters.txt
>> @@ -6243,10 +6243,6 @@
>>                          -1: disable all critical trip points in all thermal zones
>>                          <degrees C>: override all critical trip points
>>
>> -       thermal.nocrt=  [HW,ACPI]
>> -                       Set to disable actions on ACPI thermal zone
>> -                       critical and hot trip points.
>> -
>>          thermal.off=    [HW,ACPI]
>>                          1: disable ACPI thermal control
>>
>> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
>> index f9f6ebb08fdb7..3163a40f02e30 100644
>> --- a/drivers/acpi/thermal.c
>> +++ b/drivers/acpi/thermal.c
>> @@ -82,10 +82,6 @@ static int tzp;
>>   module_param(tzp, int, 0444);
>>   MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.");
>>
>> -static int nocrt;
>> -module_param(nocrt, int, 0);
>> -MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points.");
>> -
>>   static int off;
>>   module_param(off, int, 0);
>>   MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.");
>> @@ -1094,7 +1090,7 @@ static int thermal_act(const struct dmi_system_id *d) {
>>   static int thermal_nocrt(const struct dmi_system_id *d) {
>>          pr_notice("%s detected: disabling all critical thermal trip point actions.\n",
>>                    d->ident);
>> -       nocrt = 1;
>> +       crt = -1;
>>          return 0;
>>   }
>>   static int thermal_tzp(const struct dmi_system_id *d) {
>> --