Hi all,
this is probably a simple question but I am not sure where to look for
the answer. I have Rubini's Linux Device Drivers book, and I am trying
to get his example Hello World module going. I am running Red Hat 6.2
kernel 2.2.14-5.0. Here is the code that I use:
#define MODULE
#include <linux/module.h>
int init_module(void) { printk("<1>Hello World\n"); return 0;}
void cleanup_module(void) {printk("<1>Goodbye\n");}
and this is what I type when I am logged in as root:
# gcc -c hello.c
# insmod hello.o
the message "Hello World" does not get displayed
then I type:
#rmmod hello
the message "Goodbye" does not get displayed.
I can tell (I think) that the module is being inserted because if I try to
insert it twice without removing it first, it says a module with that name
already exists.
Any ideas?
thanks...
Jeffrey
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