diff --git a/drivers/video/fbdev/omap/omapfb.h b/drivers/video/fbdev/omap/omapfb.h
index d930152..0c753cc 100644
--- a/drivers/video/fbdev/omap/omapfb.h
+++ b/drivers/video/fbdev/omap/omapfb.h
@@ -229,5 +229,9 @@
 				       struct omapfb_update_window *win,
 				       void (*callback)(void *),
 				       void *callback_data);
+extern int  hwa742_update_window_async(struct fb_info *fbi,
+				       struct omapfb_update_window *win,
+				       void (*callback)(void *),
+				       void *callback_data);
 
 #endif /* __OMAPFB_H */