From: Jialin Zhang <zhangjialin11@xxxxxxxxxx>
commit d836715f588ea15f905f607c27bc693587058db4 upstream.
fwnode_handle_put() should be used when terminating
device_for_each_child_node() iteration with break or return to prevent
stale device node references from being left behind.
Fixes: d484c21bacfa ("iio: adc: Add driver for Renesas RZ/G2L A/D converter")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Jialin Zhang <zhangjialin11@xxxxxxxxxx>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220517033526.2035735-1-zhangjialin11@xxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/rzg2l_adc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -334,11 +334,15 @@ static int rzg2l_adc_parse_properties(st
i = 0;
device_for_each_child_node(&pdev->dev, fwnode) {
ret = fwnode_property_read_u32(fwnode, "reg", &channel);
- if (ret)
+ if (ret) {
+ fwnode_handle_put(fwnode);
return ret;
+ }
- if (channel >= RZG2L_ADC_MAX_CHANNELS)
+ if (channel >= RZG2L_ADC_MAX_CHANNELS) {
+ fwnode_handle_put(fwnode);
return -EINVAL;
+ }
chan_array[i].type = IIO_VOLTAGE;
chan_array[i].indexed = 1;
