linux-kernel - Re: [PATCH 09/17] ARM: imx: select ARM_CPU

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Date:	Sun, 7 Oct 2012 12:12:35 +0800
From:	Shawn Guo <shawn.guo@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...radead.org, arm@...nel.org,
	linux-kernel@...r.kernel.org, Sascha Hauer <kernel@...gutronix.de>
Subject: Re: [PATCH 09/17] ARM: imx: select ARM_CPU_SUSPEND if necessary

Isn't the following the approach we agreed on?

http://thread.gmane.org/gmane.linux.ports.arm.kernel/183222/focus=1348538

Shawn

On Tue, Oct 02, 2012 at 06:36:48PM +0200, Arnd Bergmann wrote:
> As tests using 'make randconfig' showed, imx5 requires the same logic
> as imx6 to select ARM_CPU_SUSPEND when building with power management
> enabled.
> 
> The defconfig does not have this problem because it enables imx6
> as well, but disabling it leads to this warning:
> 
> arch/arm/mach-imx/built-in.o: In function `v7_cpu_resume':
> arch/arm/mach-imx/head-v7.S:104: undefined reference to `cpu_resume'
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Cc: Sascha Hauer <kernel@...gutronix.de>
> Cc: Shawn Guo <shawn.guo@...aro.org>
> ---
>  arch/arm/mach-imx/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index afd542a..8e96573 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -89,6 +89,7 @@ config SOC_IMX5
>  	select ARCH_MXC_IOMUX_V3
>  	select ARCH_HAS_CPUFREQ
>  	select ARCH_MX5
> +	select ARM_CPU_SUSPEND if PM
>  	bool
>  
>  config SOC_IMX50
> -- 
> 1.7.10
> 
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