copy_to_user(buffer, &read_msg, sizeof(struct canmsg_t));
if (hardware_p->rtr_queue == new_rtr_entry) {
if (new_rtr_entry->next != NULL)
copy_to_user(buffer, &read_msg, sizeof(struct canmsg_t));
if (hardware_p->rtr_queue == new_rtr_entry) {
if (new_rtr_entry->next != NULL)