linux-kernel - Re: [alsa-devel] [PATCH] ASoC: rt5659: Add mclk controls

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Message-ID: <20160728205107.GA6804@Asurada-Nvidia>
Date:	Thu, 28 Jul 2016 13:51:08 -0700
From:	Nicolin Chen <nicoleotsuka@...il.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	broonie@...nel.org, mark.rutland@....com, oder_chiou@...ltek.com,
	alsa-devel@...a-project.org, devicetree@...r.kernel.org,
	lgirdwood@...il.com, linux-kernel@...r.kernel.org,
	robh+dt@...nel.org, bardliao@...ltek.com
Subject: Re: [alsa-devel] [PATCH] ASoC: rt5659: Add mclk controls

On Thu, Jul 28, 2016 at 10:40:44PM +0200, Lars-Peter Clausen wrote:
> > +	/* Check if MCLK provided */
> > +	rt5659->mclk = devm_clk_get(&i2c->dev, "mclk");
> > +	if (IS_ERR(rt5659->mclk)) {
> > +		if (PTR_ERR(rt5659->mclk) == -EPROBE_DEFER)
> > +			return -EPROBE_DEFER;
> 
> The correct thing to do here is to check if != -ENOENT and then return
> the error code. Otherwise you silently ignore errors if a clock was
> specified, but there was an error requesting it.

Oh..Thanks for the input. Will refine it in v2.