From: Gerd Hoffmann <kraxel@redhat.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>,
Mark Lord <kernel@teksavvy.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-input@vger.kernel.org, linux-media@vger.kernel.org
Subject: Re: 2.6.36/2.6.37: broken compatibility with userspace input-utils ?
Date: Wed, 26 Jan 2011 21:07:49 +0100 [thread overview]
Message-ID: <4D407F15.4030204@redhat.com> (raw)
In-Reply-To: <20110126193259.GC29268@core.coreip.homeip.net>
Hi,
> It depends. We do not have a clear way to see if new ioctls are
> supported (and I do not consider "try new ioctl and see if data sticks"
> being a good way) so that facilitated protocol version rev-up.
Yea, EVIOCGKEYCODE_V2 on a old kernel returns EINVAL. Not good. There
is another one which should have been used to signal "unknown ioctl",
ENOTTY IIRC (a bit silly for historical reasons), so you can figure
whenever your input data is invalid or whenever the ioctl isn't
supported in the first place (in which case you could just fallback to
the old version).
> So keymap
> manipulating tools might be forced to check protocol version.
Guess that is the best way indeed.
cheers,
Gerd.
next prev parent reply other threads:[~2011-01-26 20:08 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-23 17:03 2.6.36/2.6.37: broken compatibility with userspace input-utils ? Mark Lord
2011-01-24 17:54 ` Dmitry Torokhov
2011-01-25 0:32 ` Mark Lord
2011-01-25 0:55 ` Dmitry Torokhov
2011-01-25 4:13 ` Mark Lord
2011-01-25 4:20 ` Dmitry Torokhov
2011-01-25 4:37 ` Mark Lord
2011-01-25 4:43 ` Mark Lord
2011-01-25 4:55 ` Dmitry Torokhov
2011-01-25 5:04 ` Mark Lord
2011-01-25 5:07 ` Mark Lord
2011-01-25 5:15 ` Mark Lord
2011-01-25 5:31 ` Dmitry Torokhov
2011-01-25 6:52 ` Dmitry Torokhov
2011-01-25 14:42 ` Extending rc-core/userspace to handle bigger scancodes - Was: " Mauro Carvalho Chehab
2011-01-25 16:55 ` Dmitry Torokhov
2011-01-26 9:44 ` Mauro Carvalho Chehab
2011-01-25 11:42 ` Mauro Carvalho Chehab
2011-01-25 14:32 ` Mark Lord
2011-01-25 16:48 ` Dmitry Torokhov
2011-01-25 20:09 ` Linus Torvalds
2011-01-25 20:54 ` Dmitry Torokhov
2011-01-25 21:01 ` Dmitry Torokhov
2011-01-25 21:20 ` Linus Torvalds
2011-01-25 21:20 ` Linus Torvalds
2011-01-25 21:50 ` Dmitry Torokhov
2011-01-25 22:00 ` Mauro Carvalho Chehab
2011-01-25 22:22 ` Mark Lord
2011-01-25 23:29 ` Dmitry Torokhov
2011-01-26 2:00 ` Dmitry Torokhov
2011-01-26 11:26 ` Mauro Carvalho Chehab
2011-01-26 13:08 ` Gerd Hoffmann
2011-01-26 14:18 ` Mauro Carvalho Chehab
2011-01-26 14:52 ` Gerd Hoffmann
2011-01-26 16:46 ` Dmitry Torokhov
2011-01-26 16:51 ` Dmitry Torokhov
2011-01-26 17:29 ` Mauro Carvalho Chehab
2011-01-26 18:24 ` Dmitry Torokhov
2011-01-26 19:16 ` Gerd Hoffmann
2011-01-26 19:28 ` Mark Lord
2011-01-26 20:09 ` Gerd Hoffmann
2011-01-26 19:28 ` Mauro Carvalho Chehab
2011-01-26 19:32 ` Dmitry Torokhov
2011-01-26 20:07 ` Gerd Hoffmann [this message]
2011-01-26 19:27 ` Mark Lord
2011-01-26 14:58 ` Mark Lord
2011-01-26 17:41 ` Mauro Carvalho Chehab
2011-01-26 17:59 ` Dmitry Torokhov
2011-01-26 19:30 ` Mark Lord
2011-01-26 15:05 ` Mark Lord
2011-01-26 16:44 ` Dmitry Torokhov
2011-01-26 19:31 ` Mark Lord
2011-01-26 19:38 ` Dmitry Torokhov
2011-01-26 17:32 ` Mauro Carvalho Chehab
2011-01-26 19:33 ` Mark Lord
2011-01-26 19:41 ` Dmitry Torokhov
2011-01-26 19:47 ` Mark Lord
2011-01-26 19:50 ` Dmitry Torokhov
2011-01-26 21:41 ` Mark Lord
2011-01-26 21:49 ` Mark Lord
2011-01-26 22:07 ` Dmitry Torokhov
2011-01-26 22:04 ` Dmitry Torokhov
2011-01-27 1:01 ` Mark Lord
2011-01-27 1:07 ` Mark Lord
2011-01-27 2:12 ` Dmitry Torokhov
2011-01-27 3:18 ` Mark Lord
2011-01-27 6:38 ` Dmitry Torokhov
2011-01-27 10:30 ` Mauro Carvalho Chehab
2011-01-27 15:00 ` Mark Lord
2011-01-27 17:21 ` Dmitry Torokhov
2011-01-27 18:58 ` Mauro Carvalho Chehab
2011-01-28 9:39 ` Dmitry Torokhov
2011-01-28 11:55 ` Mauro Carvalho Chehab
2011-01-28 16:40 ` Dmitry Torokhov
2011-01-28 17:01 ` Mauro Carvalho Chehab
2011-01-28 17:33 ` Dmitry Torokhov
2011-01-28 18:15 ` Mauro Carvalho Chehab
2011-01-28 18:34 ` Dmitry Torokhov
2011-01-28 20:53 ` Mark Lord
2011-01-27 14:54 ` Mark Lord
2011-01-27 16:39 ` Dmitry Torokhov
2011-01-27 18:12 ` Mark Lord
2011-01-27 19:53 ` Dmitry Torokhov
2011-01-28 16:42 ` Dmitry Torokhov
2011-01-28 20:55 ` Mark Lord
2011-01-28 21:03 ` Mark Lord
2011-01-28 21:09 ` Dmitry Torokhov
2011-01-25 22:25 ` Linus Torvalds
2011-01-25 5:29 ` Dmitry Torokhov
2011-01-25 14:28 ` Mark Lord
2011-02-02 14:31 ` Chase Douglas
2011-02-02 16:58 ` Dmitry Torokhov
2011-02-02 20:00 ` Chase Douglas
2011-02-02 21:54 ` Mark Lord
2011-02-02 22:04 ` Dmitry Torokhov
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