[PATCH leds v2 09/50] leds: various: fix OF node leaks

Marek Behún
2020-09-17T22:37:00Z

Fix OF node leaks by calling of_node_put in
for_each_available_child_of_node when the cycle breaks or returns.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Nikita Travkin <nikitos.tr@gmail.com>
Cc: Milo Kim <milo.kim@ti.com>
Cc: Dan Murphy <dmurphy@ti.com>
---
drivers/leds/leds-aw2013.c | 4 +++-
drivers/leds/leds-lp55xx-common.c | 8 ++++++--
drivers/leds/leds-turris-omnia.c | 4 +++-
3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c
index 9df7de042bca2..927c5ba32592f 100644
--- a/drivers/leds/leds-aw2013.c
+++ b/drivers/leds/leds-aw2013.c
@@ -305,8 +305,10 @@ static int aw2013_probe_dt(struct aw2013 *chip)

ret = devm_led_classdev_register_ext(&chip->client->dev,
&led->cdev, &init_data);
- if (ret < 0)
+ if (ret < 0) {
+ of_node_put(child);
return ret;
+ }

i++;
}
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 50f7f5b874636..81de1346bf5d6 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -614,8 +614,10 @@ static int lp55xx_parse_multi_led(struct device_node *np,
for_each_available_child_of_node(np, child) {
ret = lp55xx_parse_multi_led_child(child, cfg, child_number,
num_colors);
- if (ret)
+ if (ret) {
+ of_node_put(child);
return ret;
+ }
num_colors++;
}

@@ -681,8 +683,10 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,

for_each_available_child_of_node(np, child) {
ret = lp55xx_parse_logical_led(child, cfg, i);
- if (ret)
+ if (ret) {
+ of_node_put(child);
return ERR_PTR(-EINVAL);
+ }
i++;
}

diff --git a/drivers/leds/leds-turris-omnia.c b/drivers/leds/leds-turris-omnia.c
index b2add494af14d..c276969137d7f 100644
--- a/drivers/leds/leds-turris-omnia.c
+++ b/drivers/leds/leds-turris-omnia.c
@@ -236,8 +236,10 @@ static int omnia_leds_probe(struct i2c_client *client,
led = &leds->leds[0];
for_each_available_child_of_node(np, child) {
ret = omnia_led_register(client, led, child);
- if (ret < 0)
+ if (ret < 0) {
+ of_node_put(child);
return ret;
+ }

led += ret;
}
--
2.26.2