/////////////////////////////////////////简单的驱动程序：
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#define SIMPLE_CHAR_MAJOR 233
// ------------------- READ ------------------------
static ssize_t simplechar_read (struct file * file ,char *buf, size_t count, loff_t
*offset)
{
printk ("simplechar_read has been called \n");
return 0;
}
// ------------------- WRITE -----------------------
static ssize_t simplechar_write (struct file * file ,const char *buf, size_t count,
loff_t *offset)
{
printk ("simplechar_write has been called \n");
return 0;
}
// ------------------- IOCTL -----------------------
int simplechar_ioctl (struct inode * inode ,struct file * file, unsigned int cmd,
unsigned long arg)
{
printk ("simplechar_ioctl has been called \n");
return 0;
}
// ----------------
