This is a note to let you know that I've just added the patch titled phy: qcom-qmp: fix reset-controller leak on probe errors 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: phy-qcom-qmp-fix-reset-controller-leak-on-probe-errors.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 4d2900f20edfe541f75756a00deeb2ffe7c66bc1 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro@xxxxxxxxxx> Date: Wed, 27 Apr 2022 08:32:42 +0200 Subject: phy: qcom-qmp: fix reset-controller leak on probe errors From: Johan Hovold <johan+linaro@xxxxxxxxxx> commit 4d2900f20edfe541f75756a00deeb2ffe7c66bc1 upstream. Make sure to release the lane reset controller in case of a late probe error (e.g. probe deferral). Note that due to the reset controller being defined in devicetree in "lane" child nodes, devm_reset_control_get_exclusive() cannot be used directly. Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Cc: stable@xxxxxxxxxxxxxxx # 4.12 Cc: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx> Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx> Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220427063243.32576-3-johan+linaro@xxxxxxxxxx Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/phy/qualcomm/phy-qcom-qmp.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -5382,6 +5382,11 @@ static const struct phy_ops qcom_qmp_pci .owner = THIS_MODULE, }; +static void qcom_qmp_reset_control_put(void *data) +{ + reset_control_put(data); +} + static int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id, void __iomem *serdes, const struct qmp_phy_cfg *cfg) @@ -5476,6 +5481,10 @@ int qcom_qmp_phy_create(struct device *d dev_err(dev, "failed to get lane%d reset\n", id); return PTR_ERR(qphy->lane_rst); } + ret = devm_add_action_or_reset(dev, qcom_qmp_reset_control_put, + qphy->lane_rst); + if (ret) + return ret; } if (cfg->type == PHY_TYPE_UFS || cfg->type == PHY_TYPE_PCIE) Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are queue-5.15/pci-qcom-fix-runtime-pm-imbalance-on-probe-errors.patch queue-5.15/pci-qcom-fix-unbalanced-phy-init-on-probe-errors.patch queue-5.15/phy-qcom-qmp-fix-reset-controller-leak-on-probe-errors.patch queue-5.15/phy-qcom-qmp-fix-struct-clk-leak-on-probe-errors.patch