Re: [External] Re: [PATCH v9] platform/x86: thinkpad_acpi: Add platform profile support

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Hi Hans

On 04/02/2021 04:18, Hans de Goede wrote:
> Hi,
> 
> On 2/3/21 3:46 PM, Mark Pearson wrote:
>> On 02/02/2021 09:49, Hans de Goede wrote:
>>> Hi,
>>>
>>> On 1/11/21 5:22 PM, Mark Pearson wrote:
>>>> Add support to thinkpad_acpi for Lenovo platforms that have DYTC
>>>> version 5 support or newer to use the platform profile feature.
>>>>
>>>> This will allow users to determine and control the platform modes
>>>> between low-power, balanced operation and performance modes.
>>>>
>>>> Signed-off-by: Mark Pearson <markpearson@xxxxxxxxxx>
>>>
>>> Now that the acpi/platform_profile changes have landed I have
>>> merged this patch (solving a trivial conflict caused by the
>>> keyboard_lang changes).
>>>
>>> Thank you for your patch, I've applied this patch to my review-hans 
>>> branch:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
>>>
>>> Note it will show up in my review-hans branch once I've pushed my
>>> local branch there, which might take a while.
>>>
>>> Once I've run some tests on this branch the patches there will be
>>> added to the platform-drivers-x86/for-next branch and eventually
>>> will be included in the pdx86 pull-request to Linus for the next
>>> merge-window.
>>>
>> Thanks Hans - sounds great.
>> Let me know if you find any issues or need any extra tests running.
> 
> So the build-bots have found 2 issues:
> 
> 1. Some symbols which are not exported need to be marked static (I will fix this myself,
> that is the easiest / fastest):
> 
> drivers/platform/x86/thinkpad_acpi.c:10081:5: warning: no previous prototype for 'dytc_profile_get' [-Wmissing-prototypes]
> drivers/platform/x86/thinkpad_acpi.c:10095:5: warning: no previous prototype for 'dytc_cql_command' [-Wmissing-prototypes]
> drivers/platform/x86/thinkpad_acpi.c:10133:5: warning: no previous prototype for 'dytc_profile_set' [-Wmissing-prototypes]
> 
> 2. This is a bigger problem, this is the result of a random-config test-build and I'm
> pretty sure that the issue is that acpi_platform was build as a module while
> thinkpad_acpi was builtin and builtin code cannot rely on modules.
> 
> drivers/platform/x86/thinkpad_acpi.c:10186: undefined reference to `platform_profile_notify'
> drivers/platform/x86/thinkpad_acpi.c:10226: undefined reference to `platform_profile_register'
> drivers/platform/x86/thinkpad_acpi.c:10246: undefined reference to `platform_profile_remove'
> 
> There are 2 ways to solve this:
> 
> 1. Change
> 
> #if IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE)
> 
> to:
> 
> #if IS_REACHABLE(CONFIG_ACPI_PLATFORM_PROFILE)
> 
> Which will disable the platform-profile support in acpi_thinkpad in the above scenario.
> 
> or.
> 
> 2. Drop the #if IS_ENABLED(...) and add a
> 
>         depends on ACPI_PLATFORM_PROFILE
> 
> To the THINKPAD_ACPI Kconfig symbol.
> 
> 
> I personally think 2. would be slightly better as it ensures that platform-profile
> support is always available when thinkpad_acpi is build, hopefully leading to less
> confusing bug-reports about it sometimes not working.
> 
> If you can let me know what you want, then I can fix this locally too and get
> the fix in place before the merge-window opens.
> 
> Regards,
> 
> Hans
> 
I think you've fixed both of those already - and I agree with #2. Thanks
for jumping on these.
Let me know if I need to do anything to help.
Thanks!
Mark



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