This is a note to let you know that I've just added the patch titled reset: renesas: Fix Runtime PM usage to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: reset-renesas-fix-runtime-pm-usage.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 92c959bae2e54ba1e2540ba5f813f7752bd76be1 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit <hkallweit1@xxxxxxxxx> Date: Wed, 15 Dec 2021 11:14:23 +0100 Subject: reset: renesas: Fix Runtime PM usage From: Heiner Kallweit <hkallweit1@xxxxxxxxx> commit 92c959bae2e54ba1e2540ba5f813f7752bd76be1 upstream. If pm_runtime_resume_and_get() fails then it returns w/o the RPM usage counter being incremented. In this case call pm_runtime_put() in remove() will result in a usage counter imbalance. Therefore check the return code of pm_runtime_resume_and_get() and bail out in case of error. Fixes: bee08559701f ("reset: renesas: Add RZ/G2L usbphy control driver") Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx> Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/ec24e13f-0530-b091-7a08-864577b9b3be@xxxxxxxxx Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/reset/reset-rzg2l-usbphy-ctrl.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/reset/reset-rzg2l-usbphy-ctrl.c +++ b/drivers/reset/reset-rzg2l-usbphy-ctrl.c @@ -137,7 +137,12 @@ static int rzg2l_usbphy_ctrl_probe(struc dev_set_drvdata(dev, priv); pm_runtime_enable(&pdev->dev); - pm_runtime_resume_and_get(&pdev->dev); + error = pm_runtime_resume_and_get(&pdev->dev); + if (error < 0) { + pm_runtime_disable(&pdev->dev); + reset_control_assert(priv->rstc); + return dev_err_probe(&pdev->dev, error, "pm_runtime_resume_and_get failed"); + } /* put pll and phy into reset state */ spin_lock_irqsave(&priv->lock, flags); Patches currently in stable-queue which might be from hkallweit1@xxxxxxxxx are queue-5.15/reset-renesas-fix-runtime-pm-usage.patch