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标题: linux 2.6下编译usb驱动和arm板进行数据通信(6) [打印本页]

作者: yuyang911220 时间: 2015-6-30 10:13 标题: linux 2.6下编译usb驱动和arm板进行数据通信(6)

static void lcd_disconnect(struct usb_interface *interface)
{
struct usb_lcd *dev;
      int minor = interface->minor;

      /* prevent skel_open() from racing skel_disconnect() */
      mutex_lock(&usb_lcd_open_mutex);

      dev = usb_get_intfdata(interface);
      usb_set_intfdata(interface, NULL);

      /* give back our minor */
      usb_deregister_dev(interface, &lcd_class);

mutex_unlock(&usb_lcd_open_mutex);

/* decrement our usage count */
kref_put(&dev->kref, lcd_delete);

info("USB LCD #%d now disconnected", minor);
}

static struct usb_driver lcd_driver = {
.name =       "usblcd",
.probe = lcd_probe,
.disconnect = lcd_disconnect,
.id_table = id_table,
};

static int __init usb_lcd_init(void)
{
int result;

result = usb_register(&lcd_driver);
if (result)
      err("usb_register failed. Error number %d", result);

return result;
}

static void __exit usb_lcd_exit(void)
{
usb_deregister(&lcd_driver);
}

module_init(usb_lcd_init);
module_exit(usb_lcd_exit);

MODULE_AUTHOR("Georges Toth ");
MODULE_DESCRIPTION(DRIVER_VERSION);
MODULE_LICENSE("GPL");

luther@gliethttp:~/work/kernel/module_drivers/gliethttp_flash$ echo "obj-m:=gliethttp_flash.o" > Makefile

luther@gliethttp:~/work/kernel/module_drivers/gliethttp_flash$ make -C /lib/modules/`uname -r`/build M=`pwd` modules
make: Entering directory `/usr/src/linux-headers-2.6.22-14-generic'
  CC [M]  /home/luther/work/kernel/module_drivers/gliethttp_flash/gliethttp_flash.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC    /home/luther/work/kernel/module_drivers/gliethttp_flash/gliethttp_flash.mod.o
  LD [M]  /home/luther/work/kernel/module_drivers/gliethttp_flash/gliethttp_flash.ko
make: Leaving directory `/usr/src/linux-headers-2.6.22-14-generic'
luther@gliethttp:~/work/kernel/module_drivers/gliethttp_flash$

luther@gliethttp:~/work/kernel/module_drivers/gliethttp_flash$ ls /dev/gliethttp_flash0
/dev/gliethttp_flash0
luther@gliethttp:~/work/kernel/module_drivers/gliethttp_flash$

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