soc: ti: Fix reference imbalance in knav_dma_probe

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[ Upstream commit b4fa73358c ]

The patch fix two reference leak.

  1) pm_runtime_get_sync will increment pm usage counter even it
     failed. Forgetting to call put operation will result in
     reference leak.

  2) The pm_runtime_enable will increase power disable depth. Thus
     a pairing decrement is needed on the error handling path to
     keep it balanced.

We fix it by: 1) adding call pm_runtime_put_noidle or
pm_runtime_put_sync in error handling. 2) adding pm_runtime_disable
in error handling, to keep usage counter and disable depth balanced.

Fixes: 88139ed030 ("soc: ti: add Keystone Navigator DMA support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Zhang Qilong 2020-11-21 19:22:37 -08:00 • committed by Greg Kroah-Hartman

parent bdf76d879a

commit 97d14d5921

1 changed files with 11 additions and 2 deletions

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drivers/soc/ti/knav_dma.c

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