diff --git a/fthd_ringbuf.c b/fthd_ringbuf.c
index 44933c7..2fbef97 100644
--- a/fthd_ringbuf.c
+++ b/fthd_ringbuf.c
@@ -27,7 +27,7 @@
 #include "fthd_ringbuf.h"
 #include "fthd_isp.h"
 
-static u32 get_entry_addr(struct fthd_private *dev_priv,
+u32 get_entry_addr(struct fthd_private *dev_priv,
 			  struct fw_channel *chan, int num)
 {
 	return chan->offset + num * FTHD_RINGBUF_ENTRY_SIZE;
diff --git a/fthd_ringbuf.h b/fthd_ringbuf.h
index 3b75610..1d98d19 100644
--- a/fthd_ringbuf.h
+++ b/fthd_ringbuf.h
@@ -49,4 +49,6 @@ extern u32 fthd_channel_ringbuf_receive(struct fthd_private *dev_priv,
 					struct fw_channel *chan);
 
 extern int fthd_channel_wait_ready(struct fthd_private *dev_priv, struct fw_channel *chan, u32 entry, int timeout);
+extern u32 get_entry_addr(struct fthd_private *dev_priv,
+			  struct fw_channel *chan, int num);
 #endif