diff --git a/drivers/mfd/stmpe-i2c.c b/drivers/mfd/stmpe-i2c.c
index 1d7b401776d1..fe018bedab98 100644
--- a/drivers/mfd/stmpe-i2c.c
+++ b/drivers/mfd/stmpe-i2c.c
@@ -87,7 +87,7 @@ stmpe_i2c_probe(struct i2c_client *i2c)
 		dev_info(&i2c->dev, "matching on node name, compatible is preferred\n");
 		partnum = id->driver_data;
 	} else
-		partnum = (enum stmpe_partnum)of_id->data;
+		partnum = (uintptr_t)of_id->data;
 
 	return stmpe_probe(&i2c_ci, partnum);
 }