linux-kernel - Re: [PATCH] regulators: Add missing dummy definition for regulator_list

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Date:	Fri, 10 Jul 2015 16:14:25 +0100
From:	"Suzuki K. Poulose" <Suzuki.Poulose@....com>
To:	Mark Brown <broonie@...nel.org>
CC:	"sfr@...b.auug.org.au" <sfr@...b.auug.org.au>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"paul@...an.com" <paul@...an.com>,
	"treding@...dia.com" <treding@...dia.com>,
	Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [PATCH] regulators: Add missing dummy definition for regulator_list_voltage

On 07/07/15 13:38, Mark Brown wrote:
> On Fri, Jun 26, 2015 at 12:06:50PM +0100, Suzuki K. Poulose wrote:
>
>> +static inline int regulator_list_voltage(struct regulator *regulator, unsigned selector)
>> +{
>> +	return 0;
>> +}
>
> I'd expect this stub to return -EINVAL since the voltage count should be
> zero for !REGULATOR (since we obviously can't count the number of
> voltages).
>
You are right, -EINVAL suites better. There are some users of the
API who consider 0 as invalid, but -EINVAL sounds better and covers
all the existing uses. Will resend the patch.

Thanks
Suzuki

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