On Thu, 12 Feb 2015, Arnd Bergmann wrote:
> The vexpress tc2 power management code calls mcpm_loopback, which
> is only available if ARM_CPU_SUSPEND is enabled, otherwise we
> get a link error:
>
> arch/arm/mach-vexpress/built-in.o: In function `tc2_pm_init':
> arch/arm/mach-vexpress/tc2_pm.c:389: undefined reference to `mcpm_loopback'
>
> This explicitly selects ARM_CPU_SUSPEND like other platforms that
> need it.
>
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
> Fixes: 3592d7e002438 ("ARM: 8082/1: TC2: test the MCPM loopback during boot")
> Cc: Nicolas Pitre <n...@linaro.org>
> Cc: Kevin Hilman <khil...@linaro.org>
> Cc: Liviu Dudau <liviu.du...@arm.com>
> Cc: Sudeep Holla <sudeep.ho...@arm.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com>
Acked-by: Nicolas Pitre <n...@linaro.org>
> ---
> arch/arm/mach-vexpress/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
> index d6b16d9a7838..3c2509b4b694 100644
> --- a/arch/arm/mach-vexpress/Kconfig
> +++ b/arch/arm/mach-vexpress/Kconfig
> @@ -73,6 +73,7 @@ config ARCH_VEXPRESS_TC2_PM
> depends on MCPM
> select ARM_CCI
> select ARCH_VEXPRESS_SPC
> + select ARM_CPU_SUSPEND
> help
> Support for CPU and cluster power management on Versatile Express
> with a TC2 (A15x2 A7x3) big.LITTLE core tile.
> --
> 2.1.0.rc2
>
>
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