From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
drivers/iio/adc/rzg2l_adc.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
index 0921ff2d9b3a..08af54824f25 100644
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -302,7 +302,7 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id)
static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc)
{
struct iio_chan_spec *chan_array;
- struct fwnode_handle *fwnode;
+ struct fwnode_handle *fwnode __free(fwnode_handle) = NULL;
struct rzg2l_adc_data *data;
unsigned int channel;
int num_channels;
@@ -332,15 +332,11 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l
i = 0;
device_for_each_child_node(&pdev->dev, fwnode) {
ret = fwnode_property_read_u32(fwnode, "reg", &channel);
- if (ret) {
- fwnode_handle_put(fwnode);
+ if (ret)
return ret;
- }
- if (channel >= RZG2L_ADC_MAX_CHANNELS) {
- fwnode_handle_put(fwnode);
+ if (channel >= RZG2L_ADC_MAX_CHANNELS)
return -EINVAL;
- }
chan_array[i].type = IIO_VOLTAGE;
chan_array[i].indexed = 1;
--
2.43.0
