insmod: can't insert 'irq.ko': invalid parameter
本帖最后由 l3864379 于 2015-3-16 15:53 编辑我加载模块时出现了这个问题，请问怎么解？insmod: can't insert 'irq.ko': invalid parameter
程序如下：
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/uaccess.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/gpio.h>
#include <linux/irq.h>
#include <plat/gpio-cfg.h>
#include <linux/timer.h>
#include <linux/ioctl.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/wait.h>
#define ON 1
#define OFF 0
static int major;
static struct cdev irq_cdev;
static struct class *cls;
static unsigned char irq_val;
static irqreturn_t irq_handle(int irq, void *dev_id)
{
int pinstate;
pinstate = gpio_get_value(S5PV210_GPB(2));
if (1 == pinstate)
irq_val = 0x50;
else
irq_val = 0x51;
return IRQ_HANDLED;
}
static long irq_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
switch (cmd){
case ON:
gpio_direction_output(S5PV210_GPB(0), 1);
ndelay(50);
gpio_direction_output(S5PV210_GPB(0), 0);
ndelay(50);
break;
case OFF:
printk("irq off!\n");
break;
//default;
//break;
}
return 0;
}
static ssize_t irq_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
if (copy_to_user(buf, &irq_val, 1))
return -EFAULT;
else
return count;
}
static const struct file_operations irq_fops = {
.owner = THIS_MODULE,
//.open = irq_open,
.read = irq_read,
.unlocked_ioctl = irq_ioctl,
//.release = irq_release,
};
static int irq_init(void)
{
dev_t dev;
int ret, err;
dev = MKDEV(major, 0);
ret = alloc_chrdev_region(&dev, 0, 1,"irq");
if (ret < 0){
printk("failed !\n");
return ret;
}
cdev_init(&irq_cdev, &irq_fops);
cdev_add(&irq_cdev, dev,1);
cls = class_create(THIS_MODULE, "irq");
device_create(cls, NULL, dev, NULL, "irq");
err = request_irq(gpio_to_irq(S5PV210_GPB(2)), irq_handle,
IRQF_TRIGGER_RISING, "IRQ", (void *)0x22);
if (err){
printk("irq request failed!\n");
return err;
}
gpio_request(S5PV210_GPB(2), "IRQ");
return 0;
}
/*
static const struct file_operations irq_fops = {
.owner = THIS_MODULE,
//.open = irq_open,
.read = irq_read,
.unlock_ioctl = irq_ioctl,
//.release = irq_release,
};
*/
void __exit irq_exit(void)
{
dev_t dev;
free_irq(S5PV210_GPB(2), (void *)0x22);
dev = MKDEV(major, 0);
device_destroy(cls, dev);
class_destroy(cls);
cdev_del(&irq_cdev);
unregister_chrdev_region(dev, 1);
//return 0;
}
MODULE_LICENSE("GPL");
module_init(irq_init);
module_exit(irq_exit);
看下有没有交叉编译,交叉编译器有没有 用错.
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