Hi all,

I am compiling a driver with gentoo linux 2.6.22. Follwoing is the error information which I can't get rid of. Although they are warnings when compiling, errors happen when I 'insmod' this bulit module.

I stopped by this for couples of weeks now, really appreciate all advices!

Thanks a lot!
following is what I've done and met---

cm-iglx Tracker # make
make -C /usr/src/linux M=/usr/src/Tracker
make[1]: Entering directory `/usr/src/linux-2.6.22-gentoo-r8'
Building modules, stage 2.
MODPOST 1 modules
WARNING: "__fixdfsi" [/usr/src/Tracker/TrackerDriver.ko] undefined!
WARNING: "__muldf3" [/usr/src/Tracker/TrackerDriver.ko] undefined!
WARNING: "__extendsfdf2" [/usr/src/Tracker/TrackerDriver.ko] undefined!
make[1]: Leaving directory `/usr/src/linux-2.6.22-gentoo-r8'

cm-iglx Tracker # insmod TrackerDriver.ko
insmod: error inserting 'TrackerDriver.ko': -1 Invalid module format

cm-iglx Tracker # dmesg
TrackerDriver: Unknown symbol __extendsfdf2
TrackerDriver: Unknown symbol __fixdfsi
TrackerDriver: Unknown symbol __muldf3

Here is the Makefile:
#-----------------
obj-m := TrackerDriver.o

# KERNELDIR ?= /lib/modules/$(shell uname -r)/build
KERNELDIR = /usr/src/linux

PWD := $(shell pwd)

all:
$(MAKE) -C $(KERNELDIR) M=$(PWD)

clean:
rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
#------------------

This is Happening Because you are trying to do some floating point values. to get read of it use Inline assembly to get the correct result, use only FPU Instructions.