diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d5e8994345bb97053b6ea11bbc3f102be8c5c0ce..c9008113111ba23d901bb0d48f27fea550e9778e 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -697,6 +697,7 @@ void drm_fb_helper_damage_area(struct fb_info *info, u32 x, u32 y, u32 width, u3
 }
 EXPORT_SYMBOL(drm_fb_helper_damage_area);
 
+#ifdef CONFIG_FB_DEFERRED_IO
 /**
  * drm_fb_helper_deferred_io() - fbdev deferred_io callback function
  * @info: fb_info struct pointer
@@ -740,6 +741,7 @@ void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagerefli
 	}
 }
 EXPORT_SYMBOL(drm_fb_helper_deferred_io);
+#endif
 
 /**
  * drm_fb_helper_set_suspend - wrapper around fb_set_suspend
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 699f2790b9ac14a61721bab63384a3d07aec6633..8426b9921a03b996198b556176a560f326bf35f6 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -256,7 +256,9 @@ void drm_fb_helper_fill_info(struct fb_info *info,
 void drm_fb_helper_damage_range(struct fb_info *info, off_t off, size_t len);
 void drm_fb_helper_damage_area(struct fb_info *info, u32 x, u32 y, u32 width, u32 height);
 
+#ifdef CONFIG_FB_DEFERRED_IO
 void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagereflist);
+#endif
 
 void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend);
 void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
@@ -361,10 +363,12 @@ static inline int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
 	return 0;
 }
 
+#ifdef CONFIG_FB_DEFERRED_IO
 static inline void drm_fb_helper_deferred_io(struct fb_info *info,
 					     struct list_head *pagelist)
 {
 }
+#endif
 
 static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
 					     bool suspend)