Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

From: Felipe Balbi <balbi@ti.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Felipe Balbi <balbi@ti.com>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	"dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	"rob.herring@calxeda.com" <rob.herring@calxeda.com>,
	Pawel Moll <Pawel.Moll@arm.com>,
	"swarren@wwwdotorg.org" <swarren@wwwdotorg.org>,
	"ijc+devicetree@hellion.org.uk" <ijc+devicetree@hellion.org.uk>,
	"rob@landley.net" <rob@landley.net>,
	"bcousson@baylibre.com" <bcousson@baylibre.com>,
	Tony Lindgren <tony@atomide.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>
Subject: Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding
Date: Thu, 14 Nov 2013 09:54:04 -0600	[thread overview]
Message-ID: <20131114155404.GE15835@saruman.home> (raw)
In-Reply-To: <20131114111958.GG16396@e106331-lin.cambridge.arm.com>

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HI,

On Thu, Nov 14, 2013 at 11:19:59AM +0000, Mark Rutland wrote:
> > On Tue, Oct 22, 2013 at 10:42:00AM +0200, Sebastian Andrzej Siewior wrote:
> > > On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> > > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > index e1c5300..b61df9d 100644
> > > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > > >  	if (err < 0)
> > > >  		return err;
> > > >  
> > > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > +	/*
> > > > +	 * try with new binding first. If it fails, still try with
> > > > +	 * bogus, miss-spelled version.
> > > > +	 */
> > > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > > >  			&ts_dev->coordinate_readouts);
> > > >  	if (err < 0)
> > > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > +				&ts_dev->coordinate_readouts);
> > > > +	if (err < 0)
> > > >  		return err;
> > > 
> > > Thanks, very good. Do we keep this fallback for ever or just for a year
> > > or two?
> > 
> > That's for DT maintainers to decide but considering DT is an ABI, I
> > guess we need to keep for 30 years or so :-p
> 
> We keep it as long as we have to. If no-one's relying on the typo by the
> next merge window, I see no reason we'd have to keep support for the

and how could you know that ? considering it's an ABI, how could you
ever know that ?

-- 
balbi

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