diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index 9083b77..4b7d378 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -60,6 +60,7 @@
 {
 	return regmap_bulk_read(wm8400->regmap, reg, data, count);
 }
+EXPORT_SYMBOL_GPL(wm8400_block_read);
 
 static int wm8400_register_codec(struct wm8400 *wm8400)
 {