[4/4] iio: adc: ad5755: use scoped device_for_each_child_node()

Commit Message

Javier Carrasco Sept. 26, 2024, 4:08 p.m. UTC

Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path, in
this particular case dropping the jump to error_out as well.

This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().

Signed-off-by: Javier Carrasco <[e-mail]>
---
 drivers/iio/dac/ad5755.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

Patch

diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
index 0b24cb19ac9d..05e80b6ae2cc 100644
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -699,7 +699,6 @@  static const struct ad5755_platform_data ad5755_default_pdata = {
 
 static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev)
 {
-	struct fwnode_handle *pp;
 	struct ad5755_platform_data *pdata;
 	unsigned int tmp;
 	unsigned int tmparray[3];
@@ -746,11 +745,12 @@  static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev)
 	}
 
 	devnr = 0;
-	device_for_each_child_node(dev, pp) {
+	device_for_each_child_node_scoped(dev, pp) {
 		if (devnr >= AD5755_NUM_CHANNELS) {
 			dev_err(dev,
 				"There are too many channels defined in DT\n");
-			goto error_out;
+			devm_kfree(dev, pdata);
+			return NULL;
 		}
 
 		pdata->dac[devnr].mode = AD5755_MODE_CURRENT_4mA_20mA;
@@ -800,11 +800,6 @@  static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev)
 	}
 
 	return pdata;
-
- error_out:
-	fwnode_handle_put(pp);
-	devm_kfree(dev, pdata);
-	return NULL;
 }
 
 static int ad5755_probe(struct spi_device *spi)