linux-kernel - Re: [PATCH] fix n900 dts file to work around 4.1 touchscreen regression on n900

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Message-ID: <20150601095435.GA21417@amd>
Date:	Mon, 1 Jun 2015 11:54:36 +0200
From:	Pavel Machek <pavel@....cz>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Felipe Balbi <balbi@...com>, Sebastian Reichel <sre@...nel.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	dmitry.torokhov@...il.com, pali.rohar@...il.com, sre@...ian.org,
	sre@...g0.de,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
	aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
	patrikbachan@...il.com
Subject: Re: [PATCH] fix n900 dts file to work around 4.1 touchscreen
 regression on n900

On Mon 2015-06-01 11:49:19, Maxime Ripard wrote:
> On Sat, May 30, 2015 at 12:14:30PM +0200, Pavel Machek wrote:
> > Well... the driver was not broken... before you did "cleanup" that did
> > two functional changes. And yes, the dts should be fixed, but that
> > does not make your "cleanup" good.
> 
> Whether it's good or not is arguable, and it really boils down to what
> we consider the default value when properties are missing.
> 
> If it's 0, then my code does the right thing. If it's undefined, well,
> I'd expect undefined behaviour to change without any notice.

It is "whatever was in the structure in the first place", as it was
before you patched the code.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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