Fedora Users — cannot modprobe <module> after installing some kernel module in FC5

I built an own kernel modules by compiling fsam7400 and installing it. So far so good. But whentrying to load this new modules by modprobe, I get an error message, and the the load is rejected:

FATAL: Error inserting fsam7400(/lib/modules/2.6.16-1.2122_FC5/kernel/drivers/net/wireless/ipw2100/fsam7400.ko): Invalid argument

Can somebody help? I think, kernel-2.6.16-1.2122_FC5 has been compiled with with an elder gcc thanthe actually installed gcc.


Listing of the build:

make -C /lib/modules/2.6.16-1.2122_FC5/build SUBDIRS=/disk2/people/root/fsam7400-0.4.0MODVERDIR=/disk2/people/root/fsam7400-0.4.0 modules

make[1]: Entering directory `/usr/src/kernels/2.6.16-1.2133_FC5-i686'
  CC [M]  /disk2/people/root/fsam7400-0.4.0/fsam7400.o
/disk2/people/root/fsam7400-0.4.0/fsam7400.c: In function 'fsam_map_memory':

/disk2/people/root/fsam7400-0.4.0/fsam7400.c:181: warning: passing argument 1 of 'check_signature'makes pointer from integer without a cast/disk2/people/root/fsam7400-0.4.0/fsam7400.c:189: warning: passing argument 1 of 'readl' makespointer from integer without a cast

  Building modules, stage 2.
  MODPOST
  CC      /disk2/people/root/fsam7400-0.4.0/fsam7400.mod.o
  LD [M]  /disk2/people/root/fsam7400-0.4.0/fsam7400.ko
make[1]: Leaving directory `/usr/src/kernels/2.6.16-1.2133_FC5-i686'
root@lire [fsam7400-0.4.0]: gmake install

make -C /lib/modules/2.6.16-1.2122_FC5/build SUBDIRS=/disk2/people/root/fsam7400-0.4.0MODVERDIR=/disk2/people/root/fsam7400-0.4.0 modules

make[1]: Entering directory `/usr/src/kernels/2.6.16-1.2133_FC5-i686'
  Building modules, stage 2.
  MODPOST
make[1]: Leaving directory `/usr/src/kernels/2.6.16-1.2133_FC5-i686'
install -d /lib/modules/2.6.16-1.2122_FC5/kernel/drivers/net/wireless/ipw2100/
install -m 644 -c fsam7400.ko /lib/modules/2.6.16-1.2122_FC5/kernel/drivers/net/wireless/ipw2100/
/sbin/depmod -a
See INSTALL for more information.


Regards

--
Joachim Backes <joachim.backes@xxxxxxxxxxxxxx>
University of Kaiserslautern,Computer Center [RHRK],
Systems and Operations, High Performance Computing,
D-67653 Kaiserslautern, PO Box 3049, Germany
--------------------------------------------------
Phone: +49-631-205-2438, FAX: +49-631-205-3056
http://hlrwm.rhrk.uni-kl.de/home/staff/backes.html

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cannot modprobe <module> after installing some kernel module in FC5 - help needed