linux-kernel - [PATCH v2 12/13] leds: rt8515: Put fwnode in any case during ->probe()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210529111935.3849707-12-andy.shevchenko@gmail.com>
Date:   Sat, 29 May 2021 14:19:34 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Pavel Machek <pavel@....cz>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Amireddy Mallikarjuna reddy 
        <mallikarjunax.reddy@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Abanoub Sameh <abanoubsameh8@...il.com>,
        Marek Behún <marek.behun@....cz>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 12/13] leds: rt8515: Put fwnode in any case during ->probe()

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

Fixes: e1c6edcbea13 ("leds: rt8515: Add Richtek RT8515 LED driver")
Cc: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
---
v2: no changes
 drivers/leds/flash/leds-rt8515.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/leds/flash/leds-rt8515.c b/drivers/leds/flash/leds-rt8515.c
index 590bfa180d10..44904fdee3cc 100644
--- a/drivers/leds/flash/leds-rt8515.c
+++ b/drivers/leds/flash/leds-rt8515.c
@@ -343,8 +343,9 @@ static int rt8515_probe(struct platform_device *pdev)
 
 	ret = devm_led_classdev_flash_register_ext(dev, fled, &init_data);
 	if (ret) {
-		dev_err(dev, "can't register LED %s\n", led->name);
+		fwnode_handle_put(child);
 		mutex_destroy(&rt->lock);
+		dev_err(dev, "can't register LED %s\n", led->name);
 		return ret;
 	}
 
@@ -362,6 +363,7 @@ static int rt8515_probe(struct platform_device *pdev)
 		 */
 	}
 
+	fwnode_handle_put(child);
 	return 0;
 }
 
-- 
2.31.1