Understanding of the return value of the structure pointer function passed to the structure pointer

         Suppose the following definition exists

struct class *class1;	/*  class  */
class1 = class_create(THIS_MODULE, IMX6UIRQ_NAME);//struct class *class_create (struct module *owner, const char *name)

        class_create();  The return value of the function is a pointer class Pointer to variable of class , among class1 It is also a point class Pointer to variable of class , It is equivalent to one-way data transmission between two similar pointers , The end result is that they point to the same class , namely class_create Created classes .