On Thursday 13 March 2014 05:43 AM, Nishanth Menon wrote:
> Just like IS_PM34XX_ERRATUM, IS_PM44XX_ERRATUM is valid only if
> CONFIG_PM is enabled, else, disabling CONFIG_PM results in build
> failure complaining about the following:
> arch/arm/mach-omap2/built-in.o: In function `omap4_boot_secondary':
> :(.text+0x8a70): undefined reference to `pm44xx_errata'
> 
Not entirely accurate since CPU hotplug doesn't depend on CONFIG_PM

> Fixes: c962184 (ARM: OMAP4: PM: add errata support)
> Reported-by: Tony Lindgren <t...@atomide.com>
> Signed-off-by: Nishanth Menon <n...@ti.com>
> ---
> 
> Patch based on: v3.14-rc6
> Reported originally with a randconfig defconfig: 
> http://slexy.org/view/s21U7eF4k1
> 
But without the PM sleep code, hotplug won't work either.
SO I think its ok assumption in this particular case

>  arch/arm/mach-omap2/pm.h |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
> index 7bdd22a..d4d0fce 100644
> --- a/arch/arm/mach-omap2/pm.h
> +++ b/arch/arm/mach-omap2/pm.h
> @@ -103,7 +103,7 @@ static inline void 
> enable_omap3630_toggle_l2_on_restore(void) { }
>  
>  #define PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD   (1 << 0)
>  
> -#if defined(CONFIG_ARCH_OMAP4)
> +#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP4)
>  extern u16 pm44xx_errata;
>  #define IS_PM44XX_ERRATUM(id)                (pm44xx_errata & (id))
>  #else
> 

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