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Old 11-13-2003, 09:38 PM   #1
jcbetterman
LQ Newbie
 
Registered: Nov 2003
Posts: 4

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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.
 
Old 11-13-2003, 11:13 PM   #2
infamous41md
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Registered: Mar 2003
Posts: 804

Rep: Reputation: 30
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.
 
  


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