linux-kernel - Re: [PATCH V2 1/3] regulator: return -EINVAL from regulator_set_voltage() for !CONFIG

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Date:	Mon, 02 Jun 2014 14:15:58 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, arvind.chauhan@....com,
	edubezval@...il.com, pavel@....cz, lgirdwood@...il.com,
	broonie@...nel.org
Subject: Re: [PATCH V2 1/3] regulator: return -EINVAL from regulator_set_voltage() for !CONFIG_REGULATOR

On Monday, June 02, 2014 12:59:23 PM Viresh Kumar wrote:
> Currently regulator_set_voltage() returns zero when support for regulators isn't
> present in kernel, i.e. CONFIG_REGULATOR=n.
> 
> Make it return -EINVAL to propagate error instead of success here.
> Audit of all users of this routine is done to make sure nothing breaks due to
> this change.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Well, I'd say this patch series is for Mark and I'm fine with patch [3/3].

Thanks!

> ---
> V1->V2: - New patch as suggested by Mark.
> 
>  include/linux/regulator/consumer.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
> index 1a4a8c1..28fa089 100644
> --- a/include/linux/regulator/consumer.h
> +++ b/include/linux/regulator/consumer.h
> @@ -394,7 +394,7 @@ static inline void regulator_bulk_free(int num_consumers,
>  static inline int regulator_set_voltage(struct regulator *regulator,
>  					int min_uV, int max_uV)
>  {
> -	return 0;
> +	return -EINVAL;
>  }
>  
>  static inline int regulator_get_voltage(struct regulator *regulator)
> 

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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