加载模块时出现的错误信息,请高手来看看!!

加载模块时出现下面的错误信息:

Warning: loading hello.o will taint the kernel: no license
See http://www.tux.org/lkml/#export-tainted for information about tainted modules
hello.o: init_module: Device or resource busy
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
You may find more information in syslog or the output from dmesg

该模块代码是:
#define MODULE
#define __KERNEL__

#include "linux/kernel.h"
#include "linux/module.h"

#ifdef MODVERSIONS
#include "linux/modversions.h"
#endif

int init_module()
{
printk(" hello !\n");
return 1;
}


int cleanup_module()
{
printk(" I will shut down myself in kernerl mod \n");
return 0;
}