FAILED: patch "[PATCH] dmaengine: stm32-dmamux: Fix PM disable depth imbalance in" failed to apply to 5.4-stable tree

The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e831c7aba950f3ae94002b10321279654525e5ec Mon Sep 17 00:00:00 2001
From: Miaoqian Lin <[email protected]>
Date: Sat, 8 Jan 2022 08:53:36 +0000
Subject: [PATCH] dmaengine: stm32-dmamux: Fix PM disable depth imbalance in
stm32_dmamux_probe

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

index a42164389ebc..d5d55732adba 100644
@@ -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);