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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-01-08 08:53:36 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 12:03:21 +0100 |
| commit | 4f3a0737992cd0a39f2fbc5492a4f786551ecbd5 (patch) | |
| tree | d8efb2ada94df7b32422058877590e25dd4b6528 | |
| parent | 62e228e3e16973056ae935295a78ddfa83e68cb3 (diff) | |
| download | linux-stable-4f3a0737992cd0a39f2fbc5492a4f786551ecbd5.tar.gz linux-stable-4f3a0737992cd0a39f2fbc5492a4f786551ecbd5.tar.bz2 linux-stable-4f3a0737992cd0a39f2fbc5492a4f786551ecbd5.zip | |
dmaengine: stm32-dmamux: Fix PM disable depth imbalance in stm32_dmamux_probe
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: 4f3ceca254e0 ("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>
| -rw-r--r-- | drivers/dma/stm32-dmamux.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/stm32-dmamux.c b/drivers/dma/stm32-dmamux.c index a42164389ebc..d5d55732adba 100644 --- a/drivers/dma/stm32-dmamux.c +++ b/drivers/dma/stm32-dmamux.c @@ -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); |