linux-kernel - Re: [PATCH] PM / Domains: export pm_genpd_add

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Message-ID: <20151116095411.GA8451@amd>
Date:	Mon, 16 Nov 2015 10:54:11 +0100
From:	Pavel Machek <pavel@....cz>
To:	Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@....com>
Cc:	rjw@...ysocki.net, khilman@...nel.org, ulf.hansson@...aro.org,
	len.brown@...el.com, gregkh@...uxfoundation.org,
	broonie@...nel.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PM / Domains: export pm_genpd_add_device symbol

On Mon 2015-11-16 14:37:28, Maruthi Srinivas Bayyavarapu wrote:
> Drivers which can be built as loadable module needs
> symbol - pm_genpd_add_device to be exported. Those drivers
> create platform devices which comes under a powerdomain.
> 
> Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@....com>
> ---
>  drivers/base/power/domain.c | 7 +++++++
>  include/linux/pm_domain.h   | 9 ++-------
>  2 files changed, 9 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
> index f932058..72998f8 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -1253,6 +1253,13 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
>  	return ret;
>  }
>  
> +int pm_genpd_add_device(struct generic_pm_domain *genpd,
> +				      struct device *dev)
> +{
> +	return __pm_genpd_add_device(genpd, dev, NULL);
> +}
> +EXPORT_SYMBOL_GPL(pm_genpd_add_device);
> +

Hmm. Alternatively, you can just export __pm_genpd_add_device and let
the static inline do its magic?

								Pavel

>  /**
>   * pm_genpd_remove_device - Remove a device from an I/O PM domain.
>   * @genpd: PM domain to remove the device from.
> diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
> index ba4ced3..f9e2f7e 100644
> --- a/include/linux/pm_domain.h
> +++ b/include/linux/pm_domain.h
> @@ -114,7 +114,8 @@ extern struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev);
>  extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
>  				 struct device *dev,
>  				 struct gpd_timing_data *td);
> -
> +extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
> +				      struct device *dev);
>  extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
>  				  struct device *dev);
>  extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
> @@ -163,12 +164,6 @@ static inline void pm_genpd_init(struct generic_pm_domain *genpd,
>  }
>  #endif
>  
> -static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
> -				      struct device *dev)
> -{
> -	return __pm_genpd_add_device(genpd, dev, NULL);
> -}
> -
>  #ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
>  extern void pm_genpd_syscore_poweroff(struct device *dev);
>  extern void pm_genpd_syscore_poweron(struct device *dev);

-- 
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