Driver can not be inserted with error "inserting gedv0.ko: -1 Invalid mosule format"

David Li · 03-19-2010, 01:47 PM

Then how do we use the kernel makefile?

irmin · 03-19-2010, 02:21 PM

Normally the layout is the following:

Code:

mymodule-objs := file1.o file2.o ...
obj-m := mymodule.ko

I modified your Makefile a little bit:

Code:

KERNELDIR = ../../kernel/linux-2.6.22.6

gedv0-objs := p3defs.o p3api.o gedrv.o
obj-m := gedv0.ko

call-kernel-build-system:
 make -C $(KERNELDIR) SUBDIRS=`cwd` ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- modules

The way you compiled the module was just creating a object and allowing unresolved references. The kernel build system will call several tools to generate the version information (especially modpost)

David Li · 03-19-2010, 03:27 PM

Do I need to intergrate you code into my makefile?

David Li · 03-19-2010, 03:49 PM

Your code is the complete make file I can use or I need to intergrate that into my make file. I did intergrate your code into mine. But modinfo still gives no version number. I think I missed your points.

David Li · 03-19-2010, 04:07 PM

irmin,

I am desperate to get this resolved. Can I call you?

irmin · 03-19-2010, 04:34 PM

Use the code as it is in my example (modify the file names if needed). If you just integrate my lines into yours, the kernel build system will not be called.

David Li · 03-19-2010, 05:13 PM

After typing make, returned nothing to be done for 'call-kernel-build-system'. Then commented out 'call-kernel-build-system', tried again returned No target, stop.

irmin · 03-19-2010, 05:27 PM

Did you put a TAB before the make command (in the Makefile)?

David Li · 03-19-2010, 05:34 PM

I did not.

David Li · 03-19-2010, 05:41 PM

There is no Makefile under 'cwd' directory.

irmin · 03-19-2010, 06:29 PM

I meant pwd instead of cwd. Sorry.

David Li · 03-19-2010, 06:37 PM

I don't see any makefie in pwd either?

irmin · 03-19-2010, 07:09 PM

In my example makefile in the last line there is a substring cwd that has to get replaced with pwd.

David Li · 03-19-2010, 07:16 PM

Did that, then when you make you get linux-2.6.22-6/pwd/Makefile: No such file or directory.

irmin · 03-20-2010, 08:13 AM

Yeah, did you use the reversed quotes around pwd? If this does not work, put "SUBDIRS=/path/to/your/source" there instead. This assumes that /path/to/your/source/Makefile is the makefile with the above contents.

Take the Makefile appended to this post. For me it does work, when the source files are replaced with dummy files, of course.