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dmaengine: stm32-dmamux: Fix PM disable depth imbalance in stm32_dmamux_probe

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commit e831c7aba950f3ae94002b10321279654525e5ec upstream.

The pm_runtime_enable will increase power disable depth.
If the probe fails, we should use pm_runtime_disable() to balance
pm_runtime_enable().

Fixes: 4f3ceca254 ("dmaengine: stm32-dmamux: Add PM Runtime support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20220108085336.11992-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miaoqian Lin 2022-01-08 08:53:36 +00:00 committed by Greg Kroah-Hartman
parent 4f907b6eb7
commit 2c35c95d36
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/stm32-dmamux.c
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@ -292,10 +292,12 @@ static int stm32_dmamux_probe(struct platform_device *pdev)
ret = of_dma_router_register(node, stm32_dmamux_route_allocate,
&stm32_dmamux->dmarouter);
if (ret)
goto err_clk;
goto pm_disable;
return 0;
pm_disable:
pm_runtime_disable(&pdev->dev);
err_clk:
clk_disable_unprepare(stm32_dmamux->clk);