46 struct i2c_dev {  struct
56 static struct i2c_dev *i2c_dev_get_by_minor(unsigned index)  in i2c_dev_get_by_minor()  argument
58 	struct i2c_dev *i2c_dev;  in i2c_dev_get_by_minor()  local
61 	list_for_each_entry(i2c_dev, &i2c_dev_list, list) {  in i2c_dev_get_by_minor()
62 		if (i2c_dev->adap->nr == index)  in i2c_dev_get_by_minor()
65 	i2c_dev = NULL;  in i2c_dev_get_by_minor()
68 	return i2c_dev;  in i2c_dev_get_by_minor()
71 static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)  in get_free_i2c_dev()
73 	struct i2c_dev *i2c_dev;  in get_free_i2c_dev()  local
81 	i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);  in get_free_i2c_dev()
82 	if (!i2c_dev)  in get_free_i2c_dev()
84 	i2c_dev->adap = adap;  in get_free_i2c_dev()
87 	list_add_tail(&i2c_dev->list, &i2c_dev_list);  in get_free_i2c_dev()
89 	return i2c_dev;  in get_free_i2c_dev()
92 static void return_i2c_dev(struct i2c_dev *i2c_dev)  in return_i2c_dev()  argument
95 	list_del(&i2c_dev->list);  in return_i2c_dev()
97 	kfree(i2c_dev);  in return_i2c_dev()
103 	struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(dev->devt));  in name_show()  local
105 	if (!i2c_dev)  in name_show()
107 	return sprintf(buf, "%s\n", i2c_dev->adap->name);  in name_show()
486 	struct i2c_dev *i2c_dev;  in i2cdev_open()  local
488 	i2c_dev = i2c_dev_get_by_minor(minor);  in i2cdev_open()
489 	if (!i2c_dev)  in i2cdev_open()
492 	adap = i2c_get_adapter(i2c_dev->adap->nr);  in i2cdev_open()
544 	struct i2c_dev *i2c_dev;  in i2cdev_attach_adapter()  local
551 	i2c_dev = get_free_i2c_dev(adap);  in i2cdev_attach_adapter()
552 	if (IS_ERR(i2c_dev))  in i2cdev_attach_adapter()
553 		return PTR_ERR(i2c_dev);  in i2cdev_attach_adapter()
556 	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,  in i2cdev_attach_adapter()
559 	if (IS_ERR(i2c_dev->dev)) {  in i2cdev_attach_adapter()
560 		res = PTR_ERR(i2c_dev->dev);  in i2cdev_attach_adapter()
568 	return_i2c_dev(i2c_dev);  in i2cdev_attach_adapter()
575 	struct i2c_dev *i2c_dev;  in i2cdev_detach_adapter()  local
581 	i2c_dev = i2c_dev_get_by_minor(adap->nr);  in i2cdev_detach_adapter()
582 	if (!i2c_dev) /* attach_adapter must have failed */  in i2cdev_detach_adapter()
585 	return_i2c_dev(i2c_dev);  in i2cdev_detach_adapter()