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求救：linux 2.6.30.4 usb鼠标驱动编程

2010/3/20镜像同步7 回复

这是在下写得一个usb鼠标驱动程序，编译成模块后能够加载。但是，插入usb鼠标以后，probe函数根本没得到执行，哪位大侠能够指点一下，不胜感激。 #include <linux/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/usb/input.h> #include <linux/hid.h> #include <asm/uaccess.h> #define DRIVER_VERSION "v1.6" #define DRIVER_AUTHOR "chen" #define DRIVER_DESC "USB HID Boot Protocol mouse driver" #define DRIVER_LICENSE "GPL" #define USB_IDMOUSE_MINOR_BASE 162 MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE(DRIVER_LICENSE); struct usb_mouse { struct usb_device *usbdev; struct usb_interface *interface; struct urb *irq; signed char *data; dma_addr_t data_dma; }; static struct usb_device_id usb_mouse_id_table[] = { {.driver_info = 42}, {} }; MODULE_DEVICE_TABLE(usb,usb_mouse_id_table); static ssize_t usb_mouse_read(struct file *file,char __user *buffer,size_t count,loff_t *ppos); static int usb_mouse_open(struct inode *inode,struct file *file); static int usb_mouse_release(struct inode *inode,struct file *file); static int usb_mouse_probe(struct usb_interface *interface,const struct usb_device_id *id); static void usb_mouse_disconnect(struct usb_interface *interface); static struct usb_driver usb_mouse_driver = { .name = "usbmouse", .probe = usb_mouse_probe, .disconnect = usb_mouse_disconnect, .id_table = usb_mouse_id_table, }; static const struct file_operations mouse_fops = { .owner = THIS_MODULE, .read = usb_mouse_read, .open = usb_mouse_open, .release = usb_mouse_release, }; static struct usb_class_driver mouse_class = { .name = "CHENmouse%d", .fops = &mouse_fops, .minor_base = USB_IDMOUSE_MINOR_BASE, }; static void usb_mouse_irq(struct urb *urb) { int status; switch(urb->status) { case 0: break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: default: goto resubmit; } resubmit: status = usb_submit_urb(urb,GFP_ATOMIC); if(status) err("can't resubmit intr"); } static int usb_mouse_open(struct inode *inode,struct file *file) { struct usb_interface *interface = usb_find_interface(&usb_mouse_driver,iminor(inode)); struct usb_mouse *mouse = usb_get_intfdata(interface); mouse->irq->dev = mouse->usbdev; if(usb_submit_urb(mouse->irq,GFP_KERNEL)) return -EIO; file->private_data = mouse; return 0; } static int usb_mouse_release(struct inode *inode,struct file *file) { struct usb_interface *interface = usb_find_interface(&usb_mouse_driver,iminor(inode)); struct usb_mouse *mouse = usb_get_intfdata(interface); usb_kill_urb(mouse->irq); file->private_data = NULL; return 0; } static ssize_t usb_mouse_read(struct file *file,char __user *buffer,size_t count,loff_t *ppos) { ssize_t num; struct usb_mouse *mouse = file->private_data; num=copy_to_user(buffer,mouse->data,count); if(num<count) return num; else return count; } static int usb_mouse_probe(struct usb_interface *intf,const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); struct usb_host_interface *interface; struct usb_endpoint_descriptor *endpoint; struct usb_mouse *mouse; int pipe,maxp,retval; printk(KERN_ALERT "enter the usb_mouse_probe\n"); interface = intf->cur_altsetting; if(interface->desc.bNumEndpoints!=1) return -ENODEV; endpoint = &interface->endpoint[0].desc; if(!usb_endpoint_is_int_in(endpoint)) return -ENODEV; pipe = usb_rcvintpipe(dev,endpoint->bEndpointAddress); maxp = usb_maxpacket(dev,pipe,usb_pipeout(pipe)); mouse = kzalloc(sizeof(struct usb_mouse),GFP_KERNEL); if(!mouse) goto fail1; mouse->data = usb_buffer_alloc(dev,8,GFP_ATOMIC,&mouse->data_dma); if(!mouse->data) goto fail1; mouse->irq = usb_alloc_urb(0,GFP_KERNEL); if(!mouse->irq) goto fail2; mouse->usbdev = dev; mouse->interface = intf; usb_fill_int_urb(mouse->irq,dev,pipe,mouse->data,(maxp>8?8:maxp),usb_mouse_irq,mouse,endpoint->bInterval); mouse->irq->transfer_dma = mouse->data_dma; mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; usb_set_intfdata(intf,mouse); retval = usb_register_dev(intf,&mouse_class); if(retval) { printk("err usb_register_dev\n"); usb_set_intfdata(intf,NULL); usb_buffer_free(dev,8,mouse->data,mouse->data_dma); kfree(mouse); return retval; } printk(KERN_ALERT "usb_register_dev successed\n"); return 0; fail2: usb_buffer_free(dev,8,mouse->data,mouse->data_dma); fail1: kfree(mouse); return -ENOMEM; } static void usb_mouse_disconnect(struct usb_interface *intf) { struct usb_mouse *mouse = usb_get_intfdata(intf); usb_deregister_dev(intf,&mouse_class); usb_set_intfdata(intf,NULL); if(mouse) { usb_kill_urb(mouse->irq); usb_free_urb(mouse->irq); usb_buffer_free(interface_to_usbdev(intf),8,mouse->data,mouse->data_dma); kfree(mouse); } } static int __init usb_mouse_init(void) { int retval = usb_register(&usb_mouse_driver); if(retval == 0) printk(DRIVER_VERSION ":" DRIVER_DESC); printk(KERN_ALERT "USB_MOUSE_INIT SUCCESSED\n"); return retval; } static void __exit usb_mouse_exit(void) { usb_deregister(&usb_mouse_driver); } module_init(usb_mouse_init); module_exit(usb_mouse_exit);

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