zhangqilong f714abf28f dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources ...

[ Upstream commit 545b2baac8 ]

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:9135408c3ace4 ("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>

2022-04-27 13:53:48 +02:00

..

Kconfig

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Makefile

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mtk-cqdma.c

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mtk-hsdma.c

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mtk-uart-apdma.c

dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

2022-04-27 13:53:48 +02:00