Q: Maintainer for drivers/isdn/hisax in kernel-2.6

Q: Maintainer for drivers/isdn/hisax in kernel-2.6

[Jan Schubert]

Who is the Maintainer for the (old) ISDN-Hisax-Part for the kernel-2.6 
(located in drivers/isdn/hisax)? I've digged into the code and got some 
problems. IMHO there exist some old/outdated code which will never be 
used in the current state (there are some Kernel-Config-Values which are 
not defined or which will never be used). I tried to write an module to 
get an Teles ISDN-PCMCIA Card running and run into some problems which 
prevents me from further testing now.

Any help?
Thx, Jan

PS: May someone point me to an Kernel-Module-Howto for kernel-2.6? There 
is none in the the Documentation-Directory and i did'nt found one in the 
net for now....

Re: Q: Maintainer for drivers/isdn/hisax in kernel-2.6

[Randy.Dunlap]

On Sun, 05 Oct 2003 23:45:11 +0200 Jan Schubert <Jan.Schubert@GMX.li> wrote:

| 
| PS: May someone point me to an Kernel-Module-Howto for kernel-2.6? There 
| is none in the the Documentation-Directory and i did'nt found one in the 
| net for now....

There's a FAQ with the module-init-tools files at
http://www.kernel.org/pub/linux/kernel/people/rusty/modules/

There's also some module info in
linux/Documentation/kbuild/modules.txt .

Do you have some specific questions?  Maybe someone could answer them.

--
~Randy

Re: Q: Maintainer for drivers/isdn/hisax in kernel-2.6

[Kai Germaschewski]

On Sun, 5 Oct 2003, Jan Schubert wrote:

> Who is the Maintainer for the (old) ISDN-Hisax-Part for the kernel-2.6 
> (located in drivers/isdn/hisax)? I've digged into the code and got some 
> problems. IMHO there exist some old/outdated code which will never be 
> used in the current state (there are some Kernel-Config-Values which are 
> not defined or which will never be used). I tried to write an module to 
> get an Teles ISDN-PCMCIA Card running and run into some problems which 
> prevents me from further testing now.

Well, Karsten Keil and me are listed for that, and I think Karsten is 
actually actively working on fixing problems there. I've been far away 
from any ISDN equipment for the past 1 1/2 years now, which combined with 
a certain lack of time unfortunately reduced my ability to contribute, but 
I'm still there to take questions and review patches.

--Kai

Re: Q: Maintainer for drivers/isdn/hisax in kernel-2.6

[Jan Schubert]

Kai Germaschewski wrote:

>I'm still there to take questions and review patches.
>
Kai, sorry for bothering you, but right now i'm stuck in the process of 
building an kernel-2.6-module for an Teles PCMCIA-Card. I guess my 
questions are not that ISDN-specific but more basically in building 
kernel-modules (especialy in drivers/isdn/hisax). There are some 
comments from my side about the current state of the code.

OK, but let's start:

According to David Hinds - the Maintainer of pcmcia-cs - in kernel 2.6 
it's no more possible to include any module in the pcmcia-cs package. 
There where such a module for pcmcia-cs in the past, which worked well 
in kernel 2.0, 2.2 and 2.4, Actually it was'nt included in pcmcia-cs but 
an patch against (with little extensions from my side to run in kernel 
2.2 and later in 2.4). Based on this module I've created an module for 
kernel-2.6, and there the problems begun. I've also checked some other 
modules in the kernel-tree but could'nt get enlighted. In 
drivers/isdn/hisax i added an Kernel-Option (CONFIG_) HISAX_TELES_CS to 
Kconfig, to the Makefile, to drivers/isdn/hisax/config.c and added a new 
file teles_cs.c. The Kernel-Option seems to be well interpreted in the 
Makefile, but not in config.c.
First Question: Why is that?

Second Question: What is config.c for? I defined some functions as 
extern there (which actually defined in teles_cs.c), which are not known 
by hisax.o (teles_cs.o also linked against):

scripts/modpost vmlinux drivers/isdn/hisax/hisax.o 
drivers/ide/legacy/ide-cs.o drivers/isdn/i4l/isdn.o 
drivers/isdn/i4l/isdn_bsdcomp.o drivers/isdn/hisax/teles_cs.o
*** Warning: "init_teles_cs" [drivers/isdn/hisax/hisax.ko] undefined!

Third Question: Why does my teles_cs.o knows nothing about 
hisax_init_pcmcia which is also defined in config.c (not defined by me) 
and defined external in teles_cs.c (which compiles fine):

Oct  6 22:27:06 Toral kernel: cs: IO port probe 0x0c00-0x0cff: clean.
Oct  6 22:27:06 Toral kernel: cs: IO port probe 0x0800-0x08ff: excluding 
0x800-0x817 0x828-0x837 0x840-0x84f 0x860-0x877 0x880-0x88f 0x898-0x89f 
0x8a8-0x8cf 0x8e0-0x8ff
Oct  6 22:27:06 Toral kernel: cs: IO port probe 0x0100-0x04ff: excluding 
0x270-0x277 0x3f8-0x3ff 0x4d0-0x4d7
Oct  6 22:27:06 Toral kernel: cs: IO port probe 0x0a00-0x0aff: clean.
Oct  6 22:27:14 Toral kernel: cs: memory probe 0xa0000000-0xa0ffffff: clean.
Oct  6 22:27:16 Toral kernel: ISDN subsystem initialized
Oct  6 22:27:16 Toral kernel: hisax: Unknown symbol init_teles_cs
Oct  6 22:27:16 Toral kernel: hisax: Unknown symbol init_teles_cs
Oct  6 22:27:16 Toral kernel: teles_cs: Unknown symbol hisax_init_pcmcia

Back to 2nd Question: What is config.c for and where is it used? 
Actually i've some ideas for what it is for, but the results are not as 
expected by me (see above)...

Comments: IMHO some of the files in drivers/isdn/hisax will not be used. 
Example: the Option CONFIG_HISAX_ELSA_CS will not be used outside 
Kconfig and the Makefile so you will get an "HiSax: Support for %s Card 
not selected\n" from config.c.  Also some functions from elsa_cs.c are 
outdated (IMHO) - i've tried to apply this file to my teles_cs.c which 
resulted in some compile-errors...

Thx for any help,
Jan