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authorMiaoqian Lin <linmq006@gmail.com>2022-01-08 11:53:36 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-02-23 14:01:07 +0300
commit2c35c95d3640979d0f0118b640ddd4b326cf4d81 (patch)
tree2803009cc830630635adeaebd24ffd5e518b4f92 /drivers/dma/stm32-dmamux.c
parent4f907b6eb701a5f7c56bc401197eb3b51db0cd8d (diff)
downloadlinux-2c35c95d3640979d0f0118b640ddd4b326cf4d81.tar.xz
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>
Diffstat (limited to 'drivers/dma/stm32-dmamux.c')
-rw-r--r--drivers/dma/stm32-dmamux.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/stm32-dmamux.c b/drivers/dma/stm32-dmamux.c
index bddd3b23f33f..f04bcffd3c24 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);