linux-kernel - Re: [PATCH V2 4/4] regulator: tps65090: add external control support for DCDC

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Message-ID: <5073F63B.9020606@nvidia.com>
Date:	Tue, 9 Oct 2012 15:32:35 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Venu Byravarasu <vbyravarasu@...dia.com>
CC:	"broonie@...nsource.wolfsonmicro.com" 
	<broonie@...nsource.wolfsonmicro.com>, "lrg@...com" <lrg@...com>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 4/4] regulator: tps65090: add external control support
 for DCDC

On Tuesday 09 October 2012 04:03 PM, Venu Byravarasu wrote:
>> +static struct regulator_ops tps65090_ext_control_ops = {
>> +};
> What is the purpose of adding empty structure?
>
We will not able to register regulator if there is no ops.
In regulator register:
         if (regulator_desc->name == NULL || regulator_desc->ops == NULL)
                 return ERR_PTR(-EINVAL);

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