Man page 9 : kobject_init_and_add

kobject_init_and_add - initialize a kobject structure and add it to the kobject hierarchy

int kobject_init_and_add(struct kobject *  kobj , struct kobj_type *  ktype , struct kobject *  parent , const char *  fmt , ... );

kobj
    pointer to the kobject to initialize

ktype
    pointer to the ktype for this kobject.

parent
    pointer to the parent of this kobject.

fmt
    the name of the kobject.

...
    variable arguments

This function combines the call to kobject_init and kobject_add. The same type of error handling after a call to kobject_add and kobject lifetime rules are the same here.