DSL module make problem

["Dr.-Ing. C. Hurschler" <hurschler@gmx.de>]

Hi,

I'm trying to compile a module for a DSL interface card (FritzDSL! SL).  It 
works fine with the 2.4.18 kernel, and headers, but I get an error when I try 
to compile with a newer kernel like 2.4.23.  I've include the last few lines 
of the make messages below:

Any suggestions on getting this to work? Is it normal that source code for 
modules is so dependent on the kernel version?  I've checked, but there isn't 
a newer version of the source available, fcdslsl-suse8.2-03.11.02.tar.gz 
seems to be the latest version, and the manufacturer claims not to know 
anything about Debian.

Thanks for any suggestions,

Chris

....
k6:/usr/src/fritz# make
(cd src.drv; make CARD=fcdslsl)
make[1]: Entering directory `/usr/src/fritz/src.drv'
cc -c -DMODULE -D__KERNEL__ -DNDEBUG -D__fcdslsl__ -DTARGET=\"fcdslsl\"  -O2 
-Wall -I /usr/src/kernel-headers-2.4.23-1/include main.c -o main.o
In file included 
from /usr/src/kernel-headers-2.4.23-1/include/asm/semaphore.h:39,
                 from /usr/src/kernel-headers-2.4.23-1/include/linux/fs.h:200,
                 from /usr/src/kernel-headers-2.4.23-1/include/linux/capability.h:17,
                 from /usr/src/kernel-headers-2.4.23-1/include/linux/binfmts.h:5,
                 from /usr/src/kernel-headers-2.4.23-1/include/linux/sched.h:9,
                 from /usr/src/kernel-headers-2.4.23-1/include/asm/uaccess.h:8,
                 from main.c:28:
/usr/src/kernel-headers-2.4.23-1/include/asm/system.h: In function 
`__set_64bit_var':
/usr/src/kernel-headers-2.4.23-1/include/asm/system.h:190: warning: 
dereferencing type-punned pointer will break strict-aliasing rules
/usr/src/kernel-headers-2.4.23-1/include/asm/system.h:190: warning: 
dereferencing type-punned pointer will break strict-aliasing rules
In file included from tools.h:30,
                 from main.c:42:
defs.h: At top level:
defs.h:85: error: redefinition of `irqreturn_t'
/usr/src/kernel-headers-2.4.23-1/include/linux/interrupt.h:17: error: 
`irqreturn_t' previously declared here
make[1]: *** [main.o] Error 1
make[1]: Leaving directory `/usr/src/fritz/src.drv'
make: *** [drv] Error 2

-- 
Dr.-Ing. C. Hurschler
Bodenstedtstr. 13
30173 Hannover