i2c: img-scb: fix reference leak when pm_runtime_get_sync fails
stable inclusion from stable-v5.10.37 commit e80ae8bde41266d3b8bf012460b6593851766006 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I94JR1 CVE: CVE-2020-36783 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e80ae8bde41266d3b8bf012460b6593851766006 -------------------------------- [ Upstream commit 223125e3 ] The PM reference count is not expected to be incremented on return in functions img_i2c_xfer and img_i2c_init. 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: 93222bd9 ("i2c: img-scb: Add runtime PM") Reported-by:Hulk Robot <hulkci@huawei.com> Signed-off-by:
Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by:
Wolfram Sang <wsa@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Felix Fu <fuzhen5@huawei.com>
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