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[RFC,07/13] iio: adc: ti-ads1015: Use __free(fwnode_handle) to replace fwnode_handle_put() calls

Message ID 20240101172611.694830-8-jic23@kernel.org
State Superseded
Headers show
Series device property / IIO: Use cleanup.h magic for fwnode_handle_put() handling. | expand

Commit Message

Jonathan Cameron Jan. 1, 2024, 5:26 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

This use of the new cleanup.h scope based freeing infrastructure allows
us to exit directly from error conditions within the
device_for_each_child_node(dev, child) loop. On normal exit from that
loop no fwnode_handle reference will be held and the child pointer
will be NULL thus making the automatically run fwnode_handle_put() a
noop.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Marek Vasut <marex@denx.de>
---
 drivers/iio/adc/ti-ads1015.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
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Patch

diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index 6799ea49dbc7..098912b871e6 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -902,7 +902,7 @@  static int ads1015_client_get_channels_config(struct i2c_client *client)
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ads1015_data *data = iio_priv(indio_dev);
 	struct device *dev = &client->dev;
-	struct fwnode_handle *node;
+	struct fwnode_handle *node __free(fwnode_handle) = NULL;
 	int i = -1;
 
 	device_for_each_child_node(dev, node) {
@@ -927,7 +927,6 @@  static int ads1015_client_get_channels_config(struct i2c_client *client)
 			pga = pval;
 			if (pga > 6) {
 				dev_err(dev, "invalid gain on %pfw\n", node);
-				fwnode_handle_put(node);
 				return -EINVAL;
 			}
 		}
@@ -936,7 +935,6 @@  static int ads1015_client_get_channels_config(struct i2c_client *client)
 			data_rate = pval;
 			if (data_rate > 7) {
 				dev_err(dev, "invalid data_rate on %pfw\n", node);
-				fwnode_handle_put(node);
 				return -EINVAL;
 			}
 		}