| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 270/411] phy: qcom-qmp: fix reset-controller leak on probe errors | Date | Mon, 13 Jun 2022 12:09:03 +0200 |
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From: Johan Hovold <johan+linaro@kernel.org>
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@vger.kernel.org # 4.12 Cc: Vivek Gautam <vivek.gautam@codeaurora.org> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220427063243.32576-3-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- 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 @@ -1860,6 +1860,11 @@ static const struct phy_ops qcom_qmp_ufs .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) { @@ -1951,6 +1956,10 @@ 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 (qmp->cfg->type == PHY_TYPE_UFS)
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