From: Miaoqian Lin linmq006@gmail.com
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 --- drivers/dma/stm32-dmamux.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/dma/stm32-dmamux.c +++ b/drivers/dma/stm32-dmamux.c @@ -292,10 +292,12 @@ static int stm32_dmamux_probe(struct pla 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);