Subject: [PATCH 1/2] ARM: OMAP3: cpuidle - check the powerdomain lookup

From: [email-masked] (Kevin Hilman)
Date: Fri, 04 May 2012 14:23:21 -0700

Daniel Lezcano <[email-masked]> writes:

> At init time, check the powerdomains lookup is successful otherwise
> exit the cpuidle driver init function with -ENODEV like what is done for the
> omap3 cpuidle driver.
>
> Signed-off-by: Daniel Lezcano <[email-masked]>
> Reviewed-by: Jean Pihet <[email-masked]>

Thanks, applying to my for_3.5/cleanup/omap-cpuidle branch.

Kevin

> ---
>  arch/arm/mach-omap2/cpuidle34xx.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
> index f682e17..207bc1c 100644
> --- a/arch/arm/mach-omap2/cpuidle34xx.c
> +++ b/arch/arm/mach-omap2/cpuidle34xx.c
> @@ -363,6 +363,9 @@ int __init omap3_idle_init(void)
>  	per_pd = pwrdm_lookup("per_pwrdm");
>  	cam_pd = pwrdm_lookup("cam_pwrdm");
>  
> +	if (!mpu_pd || !core_pd || !per_pd || !cam_pd)
> +		return -ENODEV;
> +
>  	cpuidle_register_driver(&omap3_idle_driver);
>  
>  	dev = &per_cpu(omap3_idle_dev, smp_processor_id());