From: Miaoqian Lin <linmq006@gmail.com>
Date: Mon, 24 Jan 2022 13:13:46 +0000 (+0000)
Subject: power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=19aa3c98ed7b2616e105946cec804f897837ab84;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init

[ Upstream commit 6a4760463dbc6b603690938c468839985189ce0a ]

kobject_init_and_add() takes reference even when it fails.
According to the doc of kobject_init_and_add()：

   If this function returns an error, kobject_put() must be called to
   properly clean up the memory associated with the object.

Fix memory leak by calling kobject_put().

Fixes: 8c0984e5a753 ("power: move power supply drivers to power/supply")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c
index 2677592ed7af..b00844103a07 100644
--- a/drivers/power/supply/ab8500_fg.c
+++ b/drivers/power/supply/ab8500_fg.c
@@ -2545,8 +2545,10 @@ static int ab8500_fg_sysfs_init(struct ab8500_fg *di)
 	ret = kobject_init_and_add(&di->fg_kobject,
 		&ab8500_fg_ktype,
 		NULL, "battery");
-	if (ret < 0)
+	if (ret < 0) {
+		kobject_put(&di->fg_kobject);
 		dev_err(di->dev, "failed to create sysfs entry\n");
+	}
 
 	return ret;
 }