Commit 3d833890 authored by Qinglang Miao's avatar Qinglang Miao Committed by Zhang Xiaoxu
Browse files

i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails

mainline inclusion
from mainline-v5.13-rc1
commit 278e5bbd
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I94JCT


CVE: CVE-2020-36782

---------------------------

The PM reference count is not expected to be incremented on
return in lpi2c_imx_master_enable.

However, pm_runtime_get_sync will increment the PM reference
count even failed. Forgetting to putting operation will result
in a reference leak here.

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced.

Fixes: 13d6eb20 ("i2c: imx-lpi2c: add runtime pm support")
Reported-by: default avatarHulk Robot <hulkci@huawei.com>
Signed-off-by: default avatarQinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
Signed-off-by: default avatarZhang Xiaoxu <zhangxiaoxu5@huawei.com>
parent 2ee53e46
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please to comment