[PATCH v3 4/5] msm: hotplug: support cpu hotplug on msm

[Catalin Marinas]

On 13 December 2010 01:20,  <ykaoua at qualcomm.com> wrote:
> --- /dev/null
> +++ b/arch/arm/mach-msm/hotplug.c
[...]
> +static inline void platform_do_lowpower(unsigned int cpu)
> +{
> +       /* Just enter wfe for now. */
> +       for (;;) {
> +               asm("wfe");
> +               if (pen_release == cpu) {
> +                       /*
> +                        * OK, proper wakeup, we're done
> +                        */
> +                       break;
> +               }
> +               smp_rmb();

Do you need some barrier after wfe?

-- 
Catalin