[PATCH 5.10 121/236] leds: lt3593: Put fwnode in any case during ->probe()

From: Greg Kroah-Hartman
Date: Mon Sep 13 2021 - 09:41:49 EST


From: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>

[ Upstream commit 7e1baaaa2407a642ea19b58e214fab9a69cda1d7 ]

device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.

Fixes: 8cd7d6daba93 ("leds: lt3593: Add device tree probing glue")
Cc: Daniel Mack <daniel@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/leds/leds-lt3593.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 68e06434ac08..7dab08773a34 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -99,10 +99,9 @@ static int lt3593_led_probe(struct platform_device *pdev)
init_data.default_label = ":";

ret = devm_led_classdev_register_ext(dev, &led_data->cdev, &init_data);
- if (ret < 0) {
- fwnode_handle_put(child);
+ fwnode_handle_put(child);
+ if (ret < 0)
return ret;
- }

platform_set_drvdata(pdev, led_data);

--
2.30.2