+ dvb_unregister_adapter(&f->adapter);
+}
+EXPORT_SYMBOL(videobuf_dvb_unregister_bus);
+
+struct videobuf_dvb_frontend *videobuf_dvb_get_frontend(
+ struct videobuf_dvb_frontends *f, int id)
+{
+ struct list_head *list, *q;
+ struct videobuf_dvb_frontend *fe, *ret = NULL;
+
+ mutex_lock(&f->lock);
+
+ list_for_each_safe(list, q, &f->felist) {
+ fe = list_entry(list, struct videobuf_dvb_frontend, felist);
+ if (fe->id == id) {
+ ret = fe;
+ break;
+ }
+ }
+
+ mutex_unlock(&f->lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(videobuf_dvb_get_frontend);
+
+int videobuf_dvb_find_frontend(struct videobuf_dvb_frontends *f,
+ struct dvb_frontend *p)
+{
+ struct list_head *list, *q;
+ struct videobuf_dvb_frontend *fe = NULL;
+ int ret = 0;
+
+ mutex_lock(&f->lock);
+
+ list_for_each_safe(list, q, &f->felist) {
+ fe = list_entry(list, struct videobuf_dvb_frontend, felist);
+ if (fe->dvb.frontend == p) {
+ ret = fe->id;
+ break;
+ }
+ }
+
+ mutex_unlock(&f->lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(videobuf_dvb_find_frontend);
+
+struct videobuf_dvb_frontend *videobuf_dvb_alloc_frontend(
+ struct videobuf_dvb_frontends *f, int id)
+{
+ struct videobuf_dvb_frontend *fe;
+
+ fe = kzalloc(sizeof(struct videobuf_dvb_frontend), GFP_KERNEL);
+ if (fe == NULL)
+ goto fail_alloc;
+
+ fe->id = id;
+ mutex_init(&fe->dvb.lock);
+
+ mutex_lock(&f->lock);
+ list_add_tail(&fe->felist, &f->felist);
+ mutex_unlock(&f->lock);
+
+fail_alloc:
+ return fe;
+}
+EXPORT_SYMBOL(videobuf_dvb_alloc_frontend);