I think two lines have better readability, and if you prefer one line, I can send v2 to fix that!
static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
- struct device * const dev = container_of(kobj, struct device, kobj);
+ struct device * const dev = kobj_to_dev(kobj);
Can't we make this a oneliner then merging the last two lines?