我是一个新手,学习如何为 USB 设备编写 Linux 设备驱动程序。编译代码时出现错误。注释行有问题。我正在为 USB 驱动器制作一个模块,如下所示:
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
static int pen_probe(struct usb_interface *intf,const struct usb_device_id *id)
{
printk(KERN_ALERT"\nthe probe is successful");
return 0;
}
static void pen_disconnect(struct usb_interface *intf)
{
printk(KERN_ALERT"pen drive removed");
}
const struct usb_device_id pen_table = {
USB_DEVICE(0x058f,0x6387),
};
MODULE_DEVICE_TABLE(usb,pen_table);
static struct usb_driver pen_driver = {
.name = "pen_driver",
.id_table = pen_table, // error coming at this line
.probe = pen_probe,
.disconnect = pen_disconnect,
};
static int __init pen_init(void)
{
int ret;
ret = usb_register(&pen_driver);
printk(KERN_ALERT"THE RET::%d\n",ret);
return 0;
}
static void __exit pen_exit(void)
{
usb_deregister(&pen_driver);
}
module_init(pen_init);
module_exit(pen_exit);
MODULE_LICENSE("GPL");
它给我一个错误如下:
:26:5: error: initializer element is not constant
/home/karan/practice/usb/usb1.c:26:5: error: (near initialization for ‘pen_driver.id_table’)