diff --git a/drivers/mfd/ab3550-core.c b/drivers/mfd/ab3550-core.c
index ff86acf3e6bd..3d7dce671b93 100644
--- a/drivers/mfd/ab3550-core.c
+++ b/drivers/mfd/ab3550-core.c
@@ -1320,8 +1320,10 @@ static int __init ab3550_probe(struct i2c_client *client,
 		goto exit_no_ops;
 
 	/* Set up and register the platform devices. */
-	for (i = 0; i < AB3550_NUM_DEVICES; i++)
-		ab3550_devs[i].mfd_data = ab3550_plf_data->dev_data[i];
+	for (i = 0; i < AB3550_NUM_DEVICES; i++) {
+		ab3550_devs[i].platform_data = ab3550_plf_data->dev_data[i];
+		ab3550_devs[i].pdata_size = ab3550_plf_data->dev_data_sz[i];
+	}
 
 	err = mfd_add_devices(&client->dev, 0, ab3550_devs,
 		ARRAY_SIZE(ab3550_devs), NULL,
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 7d9b6ae1c203..67bd6f7ecf32 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -186,6 +186,7 @@ struct abx500_init_settings {
 struct ab3550_platform_data {
 	struct {unsigned int base; unsigned int count; } irq;
 	void *dev_data[AB3550_NUM_DEVICES];
+	size_t dev_data_sz[AB3550_NUM_DEVICES];
 	struct abx500_init_settings *init_settings;
 	unsigned int init_settings_sz;
 };