linux-kernel - Re: [PATCH] cpufreq: mediatek: fix build error

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Date:	Mon, 16 Nov 2015 23:35:46 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Viresh Kumar <viresh.kumar@...aro.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] cpufreq: mediatek: fix build error

On Monday, November 16, 2015 10:27:55 PM Arnd Bergmann wrote:
> The recently added mt8173 cpufreq driver relies on the cpu topology
> that is always present on ARM64 but optional on ARM32:
> 
> drivers/cpufreq/mt8173-cpufreq.c: In function 'mtk_cpufreq_init':
> drivers/cpufreq/mt8173-cpufreq.c:441:30: error: 'cpu_topology' undeclared (first use in this function)
>   cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling);
> 
> This refines the Kconfig dependencies so that we can still build on
> ARM32, but only if COMPILE_TEST is selected and the CPU topology
> code is present.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> 
> diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
> index 1582c1c016b0..8014c2307332 100644
> --- a/drivers/cpufreq/Kconfig.arm
> +++ b/drivers/cpufreq/Kconfig.arm
> @@ -84,6 +84,7 @@ config ARM_KIRKWOOD_CPUFREQ
>  config ARM_MT8173_CPUFREQ
>  	bool "Mediatek MT8173 CPUFreq support"
>  	depends on ARCH_MEDIATEK && REGULATOR
> +	depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
>  	depends on !CPU_THERMAL || THERMAL=y
>  	select PM_OPP
>  	help
> 

Applied, thanks!

Rafael

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