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

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 IMHO there exist some old/outdated code which will never be used in the current state (there are some Kernel-Config-Values which are not defined or which will never be used).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....

On Sun, 05 Oct 2003 23:45:11 +0200 Jan Schubert <[email protected]> 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

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

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