linux-kernel - Re: [PATCH 6/6] ARM: exynos: select THERMAL

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Date:	Mon, 01 Feb 2016 10:26:32 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Arnd Bergmann <arnd@...db.de>, linux-samsung-soc@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org,
	Kukjin Kim <kgene@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] ARM: exynos: select THERMAL_OF

On 29.01.2016 23:50, Arnd Bergmann wrote:
> We cannot select a symbol that has disabled dependencies, so
> we get a warning if we ever enable EXYNOS_THERMAL without
> also turning on THERMAL_OF:
> 
> warning: (ARCH_EXYNOS) selects EXYNOS_THERMAL which has unmet direct dependencies (THERMAL && (ARCH_EXYNOS || COMPILE_TEST) && THERMAL_OF)
> 
> This adds another 'select' in the platform code to avoid that
> case. Alternatively, we could decide to not select EXYNOS_THERMAL
> here and instead make it a user option.

We want EXYNOS_THERMAL because we are using boost cpufreq on Exynos4x12
(through turbo frequencies in DTS and cpufreq-dt) so your current
solution is a proper fix for:

Fixes: f87e6bd3f740 ("thermal: exynos: Add the dependency of
CONFIG_THERMAL_OF instead of CONFIG_OF")

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>


Best regards,
Krzysztof

> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  arch/arm/mach-exynos/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
> index 652a0bb11578..5189bcecad12 100644
> --- a/arch/arm/mach-exynos/Kconfig
> +++ b/arch/arm/mach-exynos/Kconfig
> @@ -27,6 +27,7 @@ menuconfig ARCH_EXYNOS
>  	select S5P_DEV_MFC
>  	select SRAM
>  	select THERMAL
> +	select THERMAL_OF
>  	select MFD_SYSCON
>  	select CLKSRC_EXYNOS_MCT
>  	select POWER_RESET
>