linux-kernel - Re: [PATCH 3/4] clk: si5351: Do not pass struct clk in platform

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Date:	Thu, 30 Apr 2015 13:30:43 -0500
From:	Michael Welling <mwelling@...e.org>
To:	Fabio Estevam <festevam@...il.com>
Cc:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Jean-Francois Moine <moinejf@...e.fr>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Russell King <rmk+linux@....linux.org.uk>,
	linux-clk@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 3/4] clk: si5351: Do not pass struct clk in platform_data

On Thu, Apr 30, 2015 at 03:20:38PM -0300, Fabio Estevam wrote:
> On Thu, Apr 30, 2015 at 2:45 PM, Sebastian Hesselbarth
> <sebastian.hesselbarth@...il.com> wrote:
> 
> >          * property silabs,pll-source : <num src>, [<..>]
> >          * allow to selectively set pll source
> > @@ -1328,8 +1321,17 @@ static int si5351_i2c_probe(struct i2c_client *client,
> >         i2c_set_clientdata(client, drvdata);
> >         drvdata->client = client;
> >         drvdata->variant = variant;
> > -       drvdata->pxtal = pdata->clk_xtal;
> > -       drvdata->pclkin = pdata->clk_clkin;
> > +       drvdata->pxtal = devm_clk_get(&client->dev, "xtal");
> > +       drvdata->pclkin = devm_clk_get(&client->dev, "clkin");
> > +
> > +       if (PTR_ERR(drvdata->pxtal) == -EPROBE_DEFER ||
> > +           PTR_ERR(drvdata->pclkin) == -EPROBE_DEFER)
> > +               return -EPROBE_DEFER;
> > +
> > +       if (IS_ERR(drvdata->pxtal) && IS_ERR(drvdata->pclkin)) {
> 
> Don't you want || instead?

I doubt it. He is checking if both are not available.

The driver could work with only one of them.

If you use || then you assume to need both.
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