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Commit d18fb19c authored by zhangqilong's avatar zhangqilong Committed by Greg Kroah-Hartman
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dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

[ 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: default avatarZhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20220319022142.142709-1-zhangqilong3@huawei.com
Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 8932d9ee
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