[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <47BC7024.3010201@imap.cc>
Date: Wed, 20 Feb 2008 19:23:32 +0100
From: Tilman Schmidt <tilman@...p.cc>
To: Andi Kleen <andi@...stfloor.org>
CC: Gregory Nietsky <gregory@...worksentry.co.za>,
Sam Ravnborg <sam@...nborg.org>, Greg KH <greg@...ah.com>,
kkeil@...e.de, isdn4linux@...tserv.isdn4linux.de,
linux-kernel@...r.kernel.org, Jeff Garzik <jeff@...zik.org>
Subject: Re: Plans for mISDN?
Am 20.02.2008 17:54 schrieb Andi Kleen:
>> mISDN has two problems, which are of course interrelated:
>>
>> a) complete lack of documentation for the in-kernel driver interface
>> (equivalent of Documentation/isdn/INTERFACE)
>
> Most subsystems in the kernel would disqualify under that rule
I beg to differ. Most subsystems do have at least rudimentary
documentation. (I'm spoiled by the USB subsystem, of course. :-)
> Did you ever look for full documentation on how to write Ethernet
> drivers for example? Some bits are documented, but far from all
I am not asking for "full documentation". "Some bits" would amply
suffice. Documentation/isdn/INTERFACE, the interface description
for the "old" isdn4linux subsystem, is far from complete, either.
But it contains enough hints so that I knew where to start.
>> (maintainer of an isdn4linux driver, waiting desperately for
>> documentation on how to convert to the new CAPI/mISDN world
>> but tired of asking for it in vain)
>
> My advice is that you just read the source of some existing drivers
> for examples and copy them and of the subsystem itself if anything is
> unclear. That is how Linux drivers are usually written.
Usually, yes. But I find it unusually hard in this particular case.
In fact I have been trying to do that for two years now, without
getting anywhere. Reading code without a hint of what the authors
are trying to do is terribly time-consuming, to put it mildly.
Thanks,
T.
--
Tilman Schmidt E-Mail: tilman@...p.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)
Download attachment "signature.asc" of type "application/pgp-signature" (254 bytes)
Powered by blists - more mailing lists