linux-kernel - Re: [PATCH 5/5] platform/x86: dell: Add new dell-wmi-ddv driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4ec6d46f-b5c9-3c47-a102-6356e72c5225@amd.com>
Date:   Tue, 13 Sep 2022 13:30:32 -0500
From:   "Limonciello, Mario" <mario.limonciello@....com>
To:     Randy Dunlap <rdunlap@...radead.org>, Armin Wolf <W_Armin@....de>,
        "hdegoede@...hat.com" <hdegoede@...hat.com>,
        "markgross@...nel.org" <markgross@...nel.org>
Cc:     "rafael@...nel.org" <rafael@...nel.org>,
        "lenb@...nel.org" <lenb@...nel.org>,
        "hmh@....eng.br" <hmh@....eng.br>,
        "matan@...alib.org" <matan@...alib.org>,
        "corentin.chary@...il.com" <corentin.chary@...il.com>,
        "jeremy@...tem76.com" <jeremy@...tem76.com>,
        "productdev@...tem76.com" <productdev@...tem76.com>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] platform/x86: dell: Add new dell-wmi-ddv driver

On 9/13/2022 13:27, Randy Dunlap wrote:
> 
> 
> On 9/13/22 09:08, Limonciello, Mario wrote:
>> [Public]
>>
>>
>>
>>> -----Original Message-----
>>> From: Armin Wolf <W_Armin@....de>
>>> Sent: Tuesday, September 13, 2022 09:41
>>> To: Randy Dunlap <rdunlap@...radead.org>; hdegoede@...hat.com;
>>> markgross@...nel.org
>>> Cc: rafael@...nel.org; lenb@...nel.org; hmh@....eng.br;
>>> matan@...alib.org; corentin.chary@...il.com; jeremy@...tem76.com;
>>> productdev@...tem76.com; platform-driver-x86@...r.kernel.org; linux-
>>> acpi@...r.kernel.org; linux-kernel@...r.kernel.org
>>> Subject: Re: [PATCH 5/5] platform/x86: dell: Add new dell-wmi-ddv driver
>>>
>>> Am 12.09.22 um 23:56 schrieb Randy Dunlap:
>>>
>>>> Hi--
>>>>
>>>> On 9/12/22 05:53, Armin Wolf wrote:
>>>>> diff --git a/drivers/platform/x86/dell/Kconfig
>>> b/drivers/platform/x86/dell/Kconfig
>>>>> index 25421e061c47..209e63e347e2 100644
>>>>> --- a/drivers/platform/x86/dell/Kconfig
>>>>> +++ b/drivers/platform/x86/dell/Kconfig
>>>>> @@ -189,6 +189,19 @@ config DELL_WMI_DESCRIPTOR
>>>>>    	default n
>>>>>    	depends on ACPI_WMI
>>>>>
>>>>> +config DELL_WMI_DDV
>>>>> +	tristate "Dell WMI sensors Support"
>>>>> +	default m
>>>> You should (try to) justify default m, otherwise just
>>>> don't have a default for it.
>>>
>>> I have chosen default m since many other Dell platform drivers are being
>>> default m. Since this driver is not essential for normal operation,
>>> i will drop default m then.
>>
>> Actually Dell drivers directory are a bit unique in this regard.  There is a special
>> top level boolean.  I would suggest to keep it as is.
>>
>> Take a look at:
>> menuconfig X86_PLATFORM_DRIVERS_DELL
>>
> 
> So all of those "default m" and "default y" drivers are *needed*
> as opposed to desirable?
> 

It was supposed to be a convenience option, it's first introduced in 
f1e1ea516721d1.

So if you have a Dell laptop you set the one option and then get 
defaults for all those modules.

>>>
>>> Armin Wolf
>>>
>>>>> +	depends on ACPI_BATTERY
>>>>> +	depends on ACPI_WMI
>>>>> +	help
>>>>> +	  This option adds support for WMI-based sensors like
>>>>> +	  battery temperature sensors found on some Dell notebooks.
>>>>> +	  It also supports reading of the batteries ePPID.
>>>>> +
>>>>> +	  To compile this drivers as a module, choose M here: the module will
>>>>> +	  be called dell-wmi-ddv.
> 
> thanks.