[PATCH RESEND] ARM: imx6: build pm-imx6q.c independently of CONFIG_PM

[shawn.guo@linaro.org (Shawn Guo)]

On Tue, Feb 25, 2014 at 08:46:03PM +0100, Arnd Bergmann wrote:
> On Tuesday 18 February 2014, Shawn Guo wrote:
> > When building a kernel image with only CONFIG_CPU_IDLE but no CONFIG_PM,
> > we will get the following link error.
> > 
> 
> I seem to need more changes on top of this, to allow building with neither
> CPU_IDLE nor PM enabled. Can you verify that?

The error is only seen on the linux-next, and partially caused by the
resolution for the conflict between this patch and the ones I queued for
3.15.  I'm rebasing my imx-soc-3.15 branch to 3.14-rc4, so that the
conflict can be solved on my branch in a cleaner way, which will help
fix the error here.  So hopefully, in the next build of linux-next, the
error will disappear.

Shawn

> 
> 	Arnd
> 
> commit 6a434aea44d8a250f8ee2205be9bc429b140b663
> Author: Arnd Bergmann <arnd@arndb.de>
> Date:   Mon Feb 24 22:19:50 2014 +0100
> 
>     ARM: imx: more CONFIG_PM fixes
>     
>     This lets us build the imx code in more configurations.
>     
>     Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> 
> diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
> index a3fcd9c..a367675 100644
> --- a/arch/arm/mach-imx/common.h
> +++ b/arch/arm/mach-imx/common.h
> @@ -147,15 +147,13 @@ int imx_cpu_kill(unsigned int cpu);
>  
>  void imx6q_pm_init(void);
>  void imx6q_pm_set_ccm_base(void __iomem *base);
> -#ifdef CONFIG_PM
> -void imx6_suspend(void __iomem *ocram_vbase);
>  void imx6dl_pm_init(void);
>  void imx6sl_pm_init(void);
> +#ifdef CONFIG_PM
> +void imx6_suspend(void __iomem *ocram_vbase);
>  void imx5_pm_init(void);
>  #else
>  static inline void imx6_suspend(void __iomem *ocram_vbase) {}
> -static inline void imx6dl_pm_init(void) {}
> -static inline void imx6sl_pm_init(void) {}
>  static inline void imx5_pm_init(void) {}
>  #endif
>  
> diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c
> index bb69943..5fea999 100644
> --- a/arch/arm/mach-imx/pm-imx6q.c
> +++ b/arch/arm/mach-imx/pm-imx6q.c
> @@ -521,10 +521,12 @@ static void __init imx6_pm_common_init(const struct imx6_pm_socdata
>  
>  	WARN_ON(!ccm_base);
>  
> -	ret = imx6q_ocram_suspend_init(socdata);
> -	if (ret)
> -		pr_warn("%s: failed to initialize ocram suspend %d!\n",
> -			__func__, ret);
> +	if (IS_ENABLED(CONFIG_ARM_CPU_SUSPEND)) {
> +		ret = imx6q_ocram_suspend_init(socdata);
> +		if (ret)
> +			pr_warn("%s: failed to initialize ocram suspend %d!\n",
> +				__func__, ret);
> +	}
>  
>  	/*
>  	 * This is for SW workaround step #1 of ERR007265, see comments