linux-kernel - Re: [PATCH] cpufreq: Add ARM_MT8173

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Message-ID: <55E9F3C3.9000407@roeck-us.net>
Date:	Fri, 04 Sep 2015 12:40:51 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Olof Johansson <olof@...om.net>,
	Viresh Kumar <viresh.kumar@...aro.org>
CC:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"moderated list:ARM/Mediatek SoC..." 
	<linux-mediatek@...ts.infradead.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] cpufreq: Add ARM_MT8173_CPUFREQ dependencyon THERMAL

On 09/04/2015 12:01 PM, Olof Johansson wrote:
> On Thu, Sep 3, 2015 at 8:50 AM, Viresh Kumar <viresh.kumar@...aro.org> wrote:
>> On 03-09-15, 08:20, Guenter Roeck wrote:
>>> If ARM_MT8173_CPUFREQ is configured, and THERMAL is configured as module,
>>> the following build error is seen for arm:allmodconfig and
>>> arm64:allmodconfig.
>>>
>>> drivers/built-in.o: In function `mtk_cpufreq_ready':
>>> :(.text+0x32a20c): undefined reference to `of_cpufreq_cooling_register'
>>> drivers/built-in.o: In function `mtk_cpufreq_exit':
>>> :(.text+0x32a420): undefined reference to `cpufreq_cooling_unregister'
>>>
>>> The fix is similar to CPUFREQ_DT, but more restrictive since
>>> ARM_MT8173_CPUFREQ can not be built as module.
>>>
>>> Fixes: 1453863fb02a ("cpufreq: mediatek: Add MT8173 cpufreq driver")
>>> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
>>> ---
>>> It might also make sense to declare ARM_MT8173_CPUFREQ as tristate
>>> and relax the conditions, but I don't know if that is feasible.
>>>
>>>   drivers/cpufreq/Kconfig.arm | 1 +
>>>   1 file changed, 1 insertion(+)
>>
>> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
>
> Who's applying and sending this up to avoid extended period of build breakage?
>

Good question.

This one isn't really bad (yet), but there are other build and qemu test breakages
which have been in -next, sometimes for a long period of time, with patches
submitted but ignored by the maintainers. Those are creeping into mainline now.

Wonder if I (or someone else) should just collect those patches and send
a pull request to Linus right after (or even before) -rc1.

Guenter

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