linux-kernel - Re: [RESUBMIT PATCH v4 7/8] regulator: sky81452: Add compatible string for device binding

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Message-ID: <20141014011112.GB2751@jack-ThinkPad-T520>
Date:	Tue, 14 Oct 2014 10:11:12 +0900
From:	Gyungoh Yoo <gyungoh@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	sameo@...ux.intel.com, lee.jones@...aro.org, jg1.han@...sung.com,
	cooloney@...il.com, lgirdwood@...il.com, jack.yoo@...worksinc.com,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	grant.likely@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	pawel.moll@....com, heiko@...ech.de, jason@...edaemon.net,
	shawn.guo@...escale.com, treding@...dia.com,
	florian.vaussard@...l.ch, trivial@...nel.org, linux@...ck-us.net,
	andrew@...n.ch, jic23@...nel.org
Subject: Re: [RESUBMIT PATCH v4 7/8] regulator: sky81452: Add compatible
 string for device binding

On Mon, Oct 13, 2014 at 12:35:12PM +0200, Mark Brown wrote:
> On Mon, Oct 13, 2014 at 02:47:41PM +0900, Gyungoh Yoo wrote:
> 
> > -	np = of_get_child_by_name(dev->parent->of_node, "regulator");
> > -	if (unlikely(!np)) {
> > +	if (!np) {
> >  		dev_err(dev, "regulator node not found");
> > -		return NULL;
> > +		return ERR_PTR(-ENODATA);
> >  	}
> 
> If you're doing anything here you should convert the code to use the
> simplified interface for parsing regulator data based on putting the
> subnode name and regualtor name in the regulator descriptor.

Thank you for the review.

The driver has of_device_id.

static const struct of_device_id sky81452_reg_of_match[] = {
        { .compatible = "skyworks,sky81452-regulator", },
        { }
};

And the MFD adds the driver with of_compatible="skyworks,sky81452-regulator".
MFD core maps the device node and the regulator driver does
not need to parse the subnode name.

Thanks.
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