Re: porting driver to 2.6, still unknown relocs... :(

[Randy.Dunlap]

On Wed, 27 Aug 2003 15:38:26 +0200 LGW <large@xxxxxxxxxxxxxx> wrote:

| Hi again.
| 
| As I described before, I try to port an audio driver from 2.4.x to 2.6.x.
| 
| It compiles, but on load I get "module snd_echoaudio: Unknown 
| relocation: 0" from dmesg.
| 
| I looked into arch/*/kernel/module.c, and this error appears if the 
| loaded module contains a relocation other than R_386_32 or R_386_PC32 
| (for intel).
| 
| Now I wonder, what would be an relocation type 0? The printk should also 
| print the type in clear text I think, but it just prints 0. 0 also does 
| not look very much like a valid value at all, or does it?

Maybe g++ generates something different?
Are parts of your driver in c++?

| These are the commands used to build the modules (taken from the .*.cmd 
| files):
| 
| // for the main module file:
| gcc -Wp,-MD,sound/pci/echoaudio/.echoaudio.o.d -Wall -Wstrict-prototypes 
| -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -pipe 
| -mpreferred-stack-boundary=2 -march=athlon 
| -Iinclude/asm-i386/mach-default -D__KERNEL__ -Iinclude  -Wall 
| -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common 
| -pipe -mpreferred-stack-boundary=2 -march=athlon 
| -Iinclude/asm-i386/mach-default -nostdinc -iwithprefix include -DMODULE 
| -I/usr/include -Isound/pci/echoaudio/DSP -Isound/pci/echoaudio/ASIC 
| -DGINA_20 -DECHO_LINUX -DECHOGALS_FAMILY  -DKBUILD_BASENAME=echoaudio 
| -DKBUILD_MODNAME=snd_echoaudio -c
| -o sound/pci/echoaudio/echoaudio.o sound/pci/echoaudio/echoaudio.c
| 
| // for the c++ helper files:
| g++ -fno-rtti -Wall -Wstrict-prototypes -Wno-trigraphs -O2 
| -fno-strict-aliasing -pipe -mpreferred-stack-boundary=2 -march=athlon 
| -Iinclude/asm-i386/mach-default -D__KERNEL__ -Iinclude  -Wall 
| -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -nostdinc 
| -iwithprefix include -DMODULE -Isound/pci/echoaudio/DSP 
| -Isound/pci/echoaudio/ASIC -DGINA_20 -DECHO_LINUX -DECHOGALS_FAMILY  
| -DKBUILD_BASENAME=echoaudio -DKBUILD_MODNAME=snd_echoaudio 
| -I/usr/include -o $@.o $@.cpp
| 
| // linking echoaudio.o
| ld -m elf_i386  -r -o sound/pci/echoaudio/snd-echoaudio.o 
| sound/pci/echoaudio/echoaudio.o sound/pci/echoaudio/OsSupportLinux.o 
| sound/pci/echoaudio/CDaffyDuck.o sound/pci/echoaudio/CEchoGals_info.o
| sound/pci/echoaudio/CEchoGals_transport.o 
| sound/pci/echoaudio/CPipeOutCtrl.o sound/pci/echoaudio/CEchoGals_mixer.o 
| sound/pci/echoaudio/CMidiInQ.o sound/pci/echoaudio/CEchoGals_midi.o 
| sound/pci/echoaudio/CEchoGals_power.o sound/pci/echoaudio/CEchoGals.o 
| sound/pci/echoaudio/CLineLevel.o sound/pci/echoaudio/CMonitorCtrlL.o 
| sound/pci/echoaudio/CChannelMask.o 
| sound/pci/echoaudio/CGdDspCommObject.o 
| sound/pci/echoaudio/CDspCommObject.o 
| sound/pci/echoaudio/CGinaDspCommObject.o sound/pci/echoaudio/CGina.o
| 
| // linking snd-echoaudio.o
| ld -m elf_i386  -r -o sound/pci/echoaudio/snd-echoaudio.o 
| sound/pci/echoaudio/echoaudio.o sound/pci/echoaudio/OsSupportLinux.o 
| sound/pci/echoaudio/CDaffyDuck.o sound/pci/echoaudio/CEchoGals_info.o
| sound/pci/echoaudio/CEchoGals_transport.o 
| sound/pci/echoaudio/CPipeOutCtrl.o sound/pci/echoaudio/CEchoGals_mixer.o 
| sound/pci/echoaudio/CMidiInQ.o sound/pci/echoaudio/CEchoGals_midi.o 
| sound/pci/echoaudio/CEchoGals_power.o sound/pci/echoaudio/CEchoGals.o 
| sound/pci/echoaudio/CLineLevel.o sound/pci/echoaudio/CMonitorCtrlL.o 
| sound/pci/echoaudio/CChannelMask.o 
| sound/pci/echoaudio/CGdDspCommObject.o 
| sound/pci/echoaudio/CDspCommObject.o 
| sound/pci/echoaudio/CGinaDspCommObject.o sound/pci/echoaudio/CGina.o
| 
| // linking snd-echoaudio.ko
| ld -m elf_i386 -r -o sound/pci/echoaudio/snd-echoaudio.ko 
| sound/pci/echoaudio/snd-echoaudio.o sound/pci/echoaudio/snd-echoaudio.mod.o
| 
| I have no idea why those commands should lead to a file with broken 
| relocations. Please help me...


--
~Randy
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