linux-kernel - Re: [PATCH v2 6/9] powerpc/powernv: set power_save func after the idle states are initialized

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Date:	Wed, 18 May 2016 12:15:11 +0530
From:	Gautham R Shenoy <ego@...ux.vnet.ibm.com>
To:	"Shreyas B. Prabhu" <shreyas@...ux.vnet.ibm.com>
Cc:	mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org,
	paulus@...abs.org, linux-kernel@...r.kernel.org, mikey@...ling.org
Subject: Re: [PATCH v2 6/9] powerpc/powernv: set power_save func after the
 idle states are initialized

On Tue, May 03, 2016 at 01:54:35PM +0530, Shreyas B. Prabhu wrote:
> pnv_init_idle_states discovers supported idle states from the
> device tree and does the required initialization. Set power_save
> function pointer only after this initialization is done
> 
> Signed-off-by: Shreyas B. Prabhy <shreyas@...ux.vnet.ibm.com>

Reviewed-by: Gautham R. Shenoy <ego@...ux.vnet.ibm.com>
> ---
>  arch/powerpc/platforms/powernv/idle.c  | 3 +++
>  arch/powerpc/platforms/powernv/setup.c | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
> index fcc8b68..fbb09fb 100644
> --- a/arch/powerpc/platforms/powernv/idle.c
> +++ b/arch/powerpc/platforms/powernv/idle.c
> @@ -285,6 +285,9 @@ static int __init pnv_init_idle_states(void)
>  	}
> 
>  	pnv_alloc_idle_core_states();
> +
> +	if (supported_cpuidle_states & OPAL_PM_NAP_ENABLED)
> +		ppc_md.power_save = power7_idle;
>  out_free:
>  	kfree(flags);
>  out:
> diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
> index 1acb0c7..c9685b6 100644
> --- a/arch/powerpc/platforms/powernv/setup.c
> +++ b/arch/powerpc/platforms/powernv/setup.c
> @@ -312,7 +312,7 @@ define_machine(powernv) {
>  	.get_proc_freq          = pnv_get_proc_freq,
>  	.progress		= pnv_progress,
>  	.machine_shutdown	= pnv_shutdown,
> -	.power_save             = power7_idle,
> +	.power_save             = NULL,
>  	.calibrate_decr		= generic_calibrate_decr,
>  #ifdef CONFIG_KEXEC
>  	.kexec_cpu_down		= pnv_kexec_cpu_down,
> -- 
> 2.4.11
>