40 struct i2c_dev {  struct
51 static struct i2c_dev *i2c_dev_get_by_minor(unsigned index)  in i2c_dev_get_by_minor()  argument
53 	struct i2c_dev *i2c_dev;  in i2c_dev_get_by_minor()  local
56 	list_for_each_entry(i2c_dev, &i2c_dev_list, list) {  in i2c_dev_get_by_minor()
57 		if (i2c_dev->adap->nr == index)  in i2c_dev_get_by_minor()
60 	i2c_dev = NULL;  in i2c_dev_get_by_minor()
63 	return i2c_dev;  in i2c_dev_get_by_minor()
66 static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)  in get_free_i2c_dev()
68 	struct i2c_dev *i2c_dev;  in get_free_i2c_dev()  local
76 	i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);  in get_free_i2c_dev()
77 	if (!i2c_dev)  in get_free_i2c_dev()
79 	i2c_dev->adap = adap;  in get_free_i2c_dev()
82 	list_add_tail(&i2c_dev->list, &i2c_dev_list);  in get_free_i2c_dev()
84 	return i2c_dev;  in get_free_i2c_dev()
87 static void put_i2c_dev(struct i2c_dev *i2c_dev)  in put_i2c_dev()  argument
90 	list_del(&i2c_dev->list);  in put_i2c_dev()
92 	kfree(i2c_dev);  in put_i2c_dev()
98 	struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(dev->devt));  in name_show()  local
100 	if (!i2c_dev)  in name_show()
102 	return sprintf(buf, "%s\n", i2c_dev->adap->name);  in name_show()
634 	struct i2c_dev *i2c_dev;  in i2cdev_attach_adapter()  local
641 	i2c_dev = get_free_i2c_dev(adap);  in i2cdev_attach_adapter()
642 	if (IS_ERR(i2c_dev))  in i2cdev_attach_adapter()
643 		return PTR_ERR(i2c_dev);  in i2cdev_attach_adapter()
645 	cdev_init(&i2c_dev->cdev, &i2cdev_fops);  in i2cdev_attach_adapter()
646 	i2c_dev->cdev.owner = THIS_MODULE;  in i2cdev_attach_adapter()
647 	res = cdev_add(&i2c_dev->cdev, MKDEV(I2C_MAJOR, adap->nr), 1);  in i2cdev_attach_adapter()
652 	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,  in i2cdev_attach_adapter()
655 	if (IS_ERR(i2c_dev->dev)) {  in i2cdev_attach_adapter()
656 		res = PTR_ERR(i2c_dev->dev);  in i2cdev_attach_adapter()
664 	cdev_del(&i2c_dev->cdev);  in i2cdev_attach_adapter()
666 	put_i2c_dev(i2c_dev);  in i2cdev_attach_adapter()
673 	struct i2c_dev *i2c_dev;  in i2cdev_detach_adapter()  local
679 	i2c_dev = i2c_dev_get_by_minor(adap->nr);  in i2cdev_detach_adapter()
680 	if (!i2c_dev) /* attach_adapter must have failed */  in i2cdev_detach_adapter()
683 	cdev_del(&i2c_dev->cdev);  in i2cdev_detach_adapter()
684 	put_i2c_dev(i2c_dev);  in i2cdev_detach_adapter()