dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources
stable inclusion from stable-v5.10.113 commit f714abf28f819849d2fd93a4a8db15cff3f8798e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5ISAH Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f714abf28f819849d2fd93a4a8db15cff3f8798e -------------------------------- [ Upstream commit 545b2baa ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. We fix it: 1) Replacing it with pm_runtime_resume_and_get to keep usage counter balanced. 2) Add putting operation before returning error. Fixes:9135408c ("dmaengine: mediatek: Add MediaTek UART APDMA support") Signed-off-by:Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20220319022142.142709-1-zhangqilong3@huawei.com Signed-off-by:
Vinod Koul <vkoul@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com> Acked-by:
Xie XiuQi <xiexiuqi@huawei.com>
Loading
Please sign in to comment