diff --git a/drivers/iio/humidity/hts221_buffer.c b/drivers/iio/humidity/hts221_buffer.c
index 5f142a44c1dd..9fb3f33614d4 100644
--- a/drivers/iio/humidity/hts221_buffer.c
+++ b/drivers/iio/humidity/hts221_buffer.c
@@ -77,7 +77,6 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
 	struct st_sensors_platform_data *pdata = dev_get_platdata(hw->dev);
 	struct iio_dev *iio_dev = iio_priv_to_dev(hw);
 	bool irq_active_low = false, open_drain = false;
-	struct device_node *np = hw->dev->of_node;
 	unsigned long irq_type;
 	int err;
 
@@ -106,7 +105,7 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
 	if (err < 0)
 		return err;
 
-	if ((np && of_property_read_bool(np, "drive-open-drain")) ||
+	if (device_property_read_bool(hw->dev, "drive-open-drain") ||
 	    (pdata && pdata->open_drain)) {
 		irq_type |= IRQF_SHARED;
 		open_drain = true;
diff --git a/drivers/iio/humidity/hts221_i2c.c b/drivers/iio/humidity/hts221_i2c.c
index 4272b7030c44..1398794e4bc7 100644
--- a/drivers/iio/humidity/hts221_i2c.c
+++ b/drivers/iio/humidity/hts221_i2c.c
@@ -63,7 +63,7 @@ static struct i2c_driver hts221_driver = {
 	.driver = {
 		.name = "hts221_i2c",
 		.pm = &hts221_pm_ops,
-		.of_match_table = of_match_ptr(hts221_i2c_of_match),
+		.of_match_table = hts221_i2c_of_match,
 		.acpi_match_table = ACPI_PTR(hts221_acpi_match),
 	},
 	.probe = hts221_i2c_probe,
diff --git a/drivers/iio/humidity/hts221_spi.c b/drivers/iio/humidity/hts221_spi.c
index 055dba8897d2..ba1115489c2c 100644
--- a/drivers/iio/humidity/hts221_spi.c
+++ b/drivers/iio/humidity/hts221_spi.c
@@ -56,7 +56,7 @@ static struct spi_driver hts221_driver = {
 	.driver = {
 		.name = "hts221_spi",
 		.pm = &hts221_pm_ops,
-		.of_match_table = of_match_ptr(hts221_spi_of_match),
+		.of_match_table = hts221_spi_of_match,
 	},
 	.probe = hts221_spi_probe,
 	.id_table = hts221_spi_id_table,