linux-kernel - Re: [PATCH -next] thermal: cpu_cooling.c needs to select CPU_FREQ

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Date:	Thu, 13 Sep 2012 17:46:02 +0900
From:	Amit Kachhap <amit.kachhap@...aro.org>
To:	Randy Dunlap <rdunlap@...otime.net>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH -next] thermal: cpu_cooling.c needs to select CPU_FREQ_TABLE

On 13 September 2012 03:06, Randy Dunlap <rdunlap@...otime.net> wrote:
> From: Randy Dunlap <rdunlap@...otime.net>
>
> cpu_cooling.c (CONFIG_CPU_THERMAL) uses cpu frequency table
> intefaces so it should select CPU_FREQ_TABLE.
> Fixes these build errors:
>
> drivers/built-in.o: In function `cpufreq_get_max_state':
> cpu_cooling.c:(.text+0x4e1297): undefined reference to `cpufreq_frequency_get_table'
> drivers/built-in.o: In function `cpufreq_set_cur_state':
> cpu_cooling.c:(.text+0x4e138b): undefined reference to `cpufreq_frequency_get_table'
>
> Signed-off-by: Randy Dunlap <rdunlap@...otime.net>
> Cc: Amit Daniel <amit.kachhap@...aro.org>
> ---
>  drivers/thermal/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
>
> Also, please add info in the MAINTAINERS file for drivers/thermal/.
>
> --- linux-next-20120912.orig/drivers/thermal/Kconfig
> +++ linux-next-20120912/drivers/thermal/Kconfig
> @@ -22,6 +22,7 @@ config THERMAL_HWMON
>  config CPU_THERMAL
>         bool "generic cpu cooling support"
>         depends on THERMAL && CPU_FREQ
> +       select CPU_FREQ_TABLE

This change looks good to me. Even similar select is present platform
cpufreq drivers which uses the cpufreq API's.

Thanks,
Amit Daniel
>         help
>           This implements the generic cpu cooling mechanism through frequency
>           reduction, cpu hotplug and any other ways of reducing temperature. An
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