48 struct i2c_dev {  struct
59 static struct i2c_dev *i2c_dev_get_by_minor(unsigned index)  in i2c_dev_get_by_minor()  argument
61 	struct i2c_dev *i2c_dev;  in i2c_dev_get_by_minor()  local
64 	list_for_each_entry(i2c_dev, &i2c_dev_list, list) {  in i2c_dev_get_by_minor()
65 		if (i2c_dev->adap->nr == index)  in i2c_dev_get_by_minor()
68 	i2c_dev = NULL;  in i2c_dev_get_by_minor()
71 	return i2c_dev;  in i2c_dev_get_by_minor()
74 static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)  in get_free_i2c_dev()
76 	struct i2c_dev *i2c_dev;  in get_free_i2c_dev()  local
84 	i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);  in get_free_i2c_dev()
85 	if (!i2c_dev)  in get_free_i2c_dev()
87 	i2c_dev->adap = adap;  in get_free_i2c_dev()
90 	list_add_tail(&i2c_dev->list, &i2c_dev_list);  in get_free_i2c_dev()
92 	return i2c_dev;  in get_free_i2c_dev()
95 static void put_i2c_dev(struct i2c_dev *i2c_dev)  in put_i2c_dev()  argument
98 	list_del(&i2c_dev->list);  in put_i2c_dev()
100 	kfree(i2c_dev);  in put_i2c_dev()
106 	struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(dev->devt));  in name_show()  local
108 	if (!i2c_dev)  in name_show()
110 	return sprintf(buf, "%s\n", i2c_dev->adap->name);  in name_show()
635 	struct i2c_dev *i2c_dev;  in i2cdev_attach_adapter()  local
642 	i2c_dev = get_free_i2c_dev(adap);  in i2cdev_attach_adapter()
643 	if (IS_ERR(i2c_dev))  in i2cdev_attach_adapter()
644 		return PTR_ERR(i2c_dev);  in i2cdev_attach_adapter()
646 	cdev_init(&i2c_dev->cdev, &i2cdev_fops);  in i2cdev_attach_adapter()
647 	i2c_dev->cdev.owner = THIS_MODULE;  in i2cdev_attach_adapter()
648 	res = cdev_add(&i2c_dev->cdev, MKDEV(I2C_MAJOR, adap->nr), 1);  in i2cdev_attach_adapter()
653 	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,  in i2cdev_attach_adapter()
656 	if (IS_ERR(i2c_dev->dev)) {  in i2cdev_attach_adapter()
657 		res = PTR_ERR(i2c_dev->dev);  in i2cdev_attach_adapter()
665 	cdev_del(&i2c_dev->cdev);  in i2cdev_attach_adapter()
667 	put_i2c_dev(i2c_dev);  in i2cdev_attach_adapter()
674 	struct i2c_dev *i2c_dev;  in i2cdev_detach_adapter()  local
680 	i2c_dev = i2c_dev_get_by_minor(adap->nr);  in i2cdev_detach_adapter()
681 	if (!i2c_dev) /* attach_adapter must have failed */  in i2cdev_detach_adapter()
684 	cdev_del(&i2c_dev->cdev);  in i2cdev_detach_adapter()
685 	put_i2c_dev(i2c_dev);  in i2cdev_detach_adapter()