diff --git a/include/sound/sdca_fdl.h b/include/sound/sdca_fdl.h
index fbaf4b384c8a..979559e9ee63 100644
--- a/include/sound/sdca_fdl.h
+++ b/include/sound/sdca_fdl.h
@@ -81,6 +81,10 @@ static inline int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt)
 	return 0;
 }
 
+static inline void sdca_fdl_free_state(struct sdca_interrupt *interrupt)
+{
+}
+
 static inline int sdca_fdl_process(struct sdca_interrupt *interrupt)
 {
 	return 0;