diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
index 4c506bd940f372b8bbe3b630a9599ca52ea745bf..37f12ae7aadaeadc60005b2bced37ac05bc7210d 100644
--- a/drivers/base/regmap/regmap-spi.c
+++ b/drivers/base/regmap/regmap-spi.c
@@ -73,7 +73,8 @@ static int regmap_spi_async_write(void *context,
 
 	spi_message_init(&async->m);
 	spi_message_add_tail(&async->t[0], &async->m);
-	spi_message_add_tail(&async->t[1], &async->m);
+	if (val)
+		spi_message_add_tail(&async->t[1], &async->m);
 
 	async->m.complete = regmap_spi_complete;
 	async->m.context = async;