how can i make my driver working?:):)

hi all. i'm a newbie. and i wanna write a usb driver.
my OS is RH9.0
kernal version is 2.4.20

i complied the usb-skeleton.c and rename it myusb.o
then i guessed i should register myusb.o module in the kernel but failed

what i did is in the following:

1. insmode myusb.o
2. cp myusb.o /lib/modules/`uname -r`/kernel/drivers/usb

then i saw a nod created in /dev/usb called myusb

ok.that's all i've done.

then i wrote a test.c to access the node
int main(void)
{
int fd=open(" /dev/usb/myusb ");
cout<<fd << endl;

return 0;
}

run it, return -1. it means the node cannnot be accessed.

i guess there is something wrong when i install myusb.o in the kernel.
but i donot konw what is wrong.
anyone who can help me that how can i install my driver in RH and run it
properly plz?

thx.

im really no driver whiz, im just starting on 'linux device drivers', but from that description it could probably be numerous things. when u do lsmod, does it list your module? you have the source, so look at the open_ method and see why it returns -1. if the source is any good it should have some comments explaining what's happening or u should have some documentation.