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Subject[PATCH] iio: adc: ti-ads131e08: add missing fwnode_handle_put() in ads131e08_alloc_channels()
Date
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: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>
---
drivers/iio/adc/ti-ads131e08.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
index 0c2025a22575..80a09817c119 100644
--- a/drivers/iio/adc/ti-ads131e08.c
+++ b/drivers/iio/adc/ti-ads131e08.c
@@ -739,7 +739,7 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
device_for_each_child_node(dev, node) {
ret = fwnode_property_read_u32(node, "reg", &channel);
if (ret)
- return ret;
+ goto err_child_out;

ret = fwnode_property_read_u32(node, "ti,gain", &tmp);
if (ret) {
@@ -747,7 +747,7 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
} else {
ret = ads131e08_pga_gain_to_field_value(st, tmp);
if (ret < 0)
- return ret;
+ goto err_child_out;

channel_config[i].pga_gain = tmp;
}
@@ -758,7 +758,7 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
} else {
ret = ads131e08_validate_channel_mux(st, tmp);
if (ret)
- return ret;
+ goto err_child_out;

channel_config[i].mux = tmp;
}
@@ -784,6 +784,10 @@ static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
st->channel_config = channel_config;

return 0;
+
+err_child_out:
+ fwnode_handle_put(node);
+ return ret;
}

static void ads131e08_regulator_disable(void *data)
--
2.25.1
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