kernel 2.6: trouble removing floating point from driver

From: Dan Miller (dan_at_invalid.net)
Date: 10/18/05 

Date: Mon, 17 Oct 2005 19:52:54 -0500

I'm attempting to port a driver from kernel 2.2 to 2.6. A couple of the
low-level modules in this driver used alot of floating-point operations
in the original version; I've re-designed the driver to not do this.
Now, when I compile under kernel 2.6, I'm still getting errors regarding
some library-based floating point modules:

/usr/src/ip3dev/ip3eth >rz -y; make
rz waiting to receive.make -C /lib/modules/2.6.11.4-20a-default/build
M=/usr/src/ip3dev/ip3eth
make[1]: Entering directory `/usr/src/linux-2.6.11.4-20a-
obj/i386/default'
make -C ../../../linux-2.6.11.4-20a O=../linux-2.6.11.4-20a-
obj/i386/default
  CC [M] /usr/src/ip3dev/ip3eth/gsmrx.o
  LD [M] /usr/src/ip3dev/ip3eth/ip3eth.o
  Building modules, stage 2.
  MODPOST
*** Warning: "__subdf3" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__muldf3" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__divdf3" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__fixdfsi" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__adddf3" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__fixunsdfsi" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
*** Warning: "__floatsidf" [/usr/src/ip3dev/ip3eth/ip3eth.ko] undefined!
  LD [M] /usr/src/ip3dev/ip3eth/ip3eth.ko
make[1]: Leaving directory `/usr/src/linux-2.6.11.4-20a-obj/i386/default'

//********************************************************************

I've grepped all of my sources (including headers), and I don't have any
references to double or float now in the code. Is there some way I can
find out what operations are making these calls, so I can eliminate
them??

Dan Miller

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