[PATCH 2/2] ARM: Exynos4: update SYSMMU setup code for gen_pd power domain driver

[KyongHo Cho]

On Wed, Apr 11, 2012 at 11:34 PM, Marek Szyprowski
<m.szyprowski at samsung.com> wrote:
> SYSMMU platform devices must be registered before setting up power
> domains to let power domain driver to correctly register also SYSMMU
> controller devices. This patch also registers SYSMMU controller devices
> to respective power domains.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
> Acked-by: Kyungmin Park <kyungmin.park at samsung.com>
> ---
>  arch/arm/mach-exynos/dev-sysmmu.c |    6 +++++-
>  arch/arm/mach-exynos/pm_domains.c |   13 +++++++++++++
>  2 files changed, 18 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-exynos/dev-sysmmu.c b/arch/arm/mach-exynos/dev-sysmmu.c
> index c5b1ea3..3544638 100644
> --- a/arch/arm/mach-exynos/dev-sysmmu.c
> +++ b/arch/arm/mach-exynos/dev-sysmmu.c
> @@ -271,4 +271,8 @@ static int __init init_sysmmu_platform_device(void)
>
>        return 0;
>  }
> -arch_initcall(init_sysmmu_platform_device);
> +/*
> + * SYSMMU platform devices must be registered before power domains
> + * see pm_domain.c, which use arch_initcall()
> + */
> +core_initcall(init_sysmmu_platform_device);
I don't understand why init_sysmmu_platform_device() must be called before
exynos4_pm_init_power_domain()?

Other devices also added by an arch_initcall() function which calls
mdesc->init_machine().
I also was unable to find any reason to add devices before registering
the devices
to pm domain.

Regards,

KyongHo.