#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/fs.h>
static dev_t dev_num;
static int __init test_init(void)
{
int ret = 0;
printk("test_init.....\n");
dev_num = MKDEV(200, 1);
//静态注册设备号
ret = register_chrdev_region(dev_num, 1, "sdev");
if (ret < 0)
{
printk("register_chrdev_region failed.....\n");
return 1;
}
printk("major = %d minor: %d\n", MAJOR(dev_num), MINOR(dev_num));
printk("register_chrdev_region OK.....\n");
return 0;
}
static void __exit test_exit(void)
{
unregister_chrdev_region(dev_num, 1);
printk("test_exit......\n");
}
module_init(test_init);
module_exit(test_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jin.Deng");
MODULE_INFO(intree, "Y");
