insmod：无法插入'./intrpt.ko'：函数未实现

Question

我正在编写一个接收mpc8308（PowerPC）板中断的内核模块。当我为Ubuntu和我当前版本的内核编写代码时，它适用于键盘中断，但是当我为mpc8308板（2.6.29.6内核）构建它时，我想用insmod将其加载到内核中命令我收到错误：

insmod: cannot insert './intrpt.ko': Function not implemented

我的代码是：

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>

#define DRIVER_AUTHOR "AVM"
#define DRIVER_DESC "A sample driver"

static irqreturn_t irq_handler(int irq, void *dev_id, struct pt_regs *regs)
{
  printk(KERN_ALERT "Hello Interrupt world.\n");
  return IRQ_HANDLED;
}
/*
* Initialize the module − register the IRQ handler
*/
int init_module()
{
  free_irq(1, NULL);
  return request_irq(1, irq_handler, IRQF_SHARED, "test_keyboard_irq_handler",
                    (void *)(irq_handler));
}
/*
* Cleanup
*/
void cleanup_module()
{
  free_irq(1, NULL);
}

MODULE_LICENSE("GPL");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_SUPPORTED_DEVICE("testdevice");

和modinfo ./intrpt.ko的输出是：

filename:       ./intrpt.ko
description:    A sample driver
author:          
license:        GPL
depends:        
vermagic:       2.6.29.6-rt23 mod_unload