linux-kernel - Re: 2.6.36/2.6.37: broken compatibility with userspace input-utils ?

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Message-ID: <20110126220741.GB29484@core.coreip.homeip.net>
Date:	Wed, 26 Jan 2011 14:07:41 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Mark Lord <kernel@...savvy.com>
Cc:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-input@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: 2.6.36/2.6.37: broken compatibility with userspace input-utils ?

On Wed, Jan 26, 2011 at 04:49:14PM -0500, Mark Lord wrote:
> Or perhaps get rid of that unworkable "version number" thing
> (just freeze it in time with the 2.6.35 value returned),
> and implement a "get_feature_flags" ioctl or something for going forward.
> Then you can just turn on new bits in the flags as new features are added.
>

That could be done but I do not expect retire features so far so version
is about the same. Plus, what guarantees that someone in the future
won't write a utility that compares exact capability bitmap and refuse
to work when new ones will be added?

-- 
Dmitry
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