In message <200405251105.11689.Schramel.Linux at go.bartec.de> you wrote:
>
> My MPC8270 system works with 2.4.26 (toolchain ELDK), for development i use
> NFS (opt/eldk/ppc_82xx as rootfs). Now i write a device driver and have some
> trouble.
> I ve searched the whole list, but i didn't found some helpfully comments.
>
> --------------------------------------------------
> bash-2.05b# insmod demodriver.o
> demodriver.o: unresolved symbol module_unregister_chrdev
> demodriver.o: unresolved symbol register_chrdev
> demodriver.o: unresolved symbol led_init
> demodriver.o: unresolved symbol printf
> demodriver.o: unresolved symbol printk
> ------------------------------------------------
>
> What is the reason for this messages ??
The reason is bugs in your driver code.
module_unregister_chrdev - there is no such function in the Linux kernel.
Do you mean unregister_chrdev() or devfs_unregister_chrdev()?
led_init - there is no such exported kernel symbol. Which function
are you trying to call? Is this something in your own driver?
printk - there is no such function in the Linux kernel. Did you mean
printk() instead?
register_chrdev, printk - I can only speculate. These are exported
kernel symbols. probably you compile the driver with bad or
incomplete compiler options?
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
Horses just naturally have mohawk haircuts.
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