5.15-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
[ Upstream commit 9cf87666fc6e08572341fe08ecd909935998fbbd ]
Make sure to free the "urs" platform device, which is created for some ACPI platforms, on probe errors and on driver unbind.
Compile-tested only.
Fixes: c25c210f590e ("usb: dwc3: qcom: add URS Host support for sdm845 ACPI boot") Cc: Shawn Guo shawn.guo@linaro.org Signed-off-by: Johan Hovold johan+linaro@kernel.org Acked-by: Andrew Halaney ahalaney@redhat.com Acked-by: Shawn Guo shawn.guo@linaro.org Link: https://lore.kernel.org/r/20231117173650.21161-4-johan+linaro@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/dwc3/dwc3-qcom.c | 37 +++++++++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index d7240cdca07c1..5d67378bd77ce 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -704,9 +704,9 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) return ret; }
-static struct platform_device * -dwc3_qcom_create_urs_usb_platdev(struct device *dev) +static struct platform_device *dwc3_qcom_create_urs_usb_platdev(struct device *dev) { + struct platform_device *urs_usb = NULL; struct fwnode_handle *fwh; struct acpi_device *adev; char name[8]; @@ -726,9 +726,26 @@ dwc3_qcom_create_urs_usb_platdev(struct device *dev)
adev = to_acpi_device_node(fwh); if (!adev) - return NULL; + goto err_put_handle; + + urs_usb = acpi_create_platform_device(adev, NULL); + if (IS_ERR_OR_NULL(urs_usb)) + goto err_put_handle; + + return urs_usb;
- return acpi_create_platform_device(adev, NULL); +err_put_handle: + fwnode_handle_put(fwh); + + return urs_usb; +} + +static void dwc3_qcom_destroy_urs_usb_platdev(struct platform_device *urs_usb) +{ + struct fwnode_handle *fwh = urs_usb->dev.fwnode; + + platform_device_unregister(urs_usb); + fwnode_handle_put(fwh); }
static int dwc3_qcom_probe(struct platform_device *pdev) @@ -812,13 +829,13 @@ static int dwc3_qcom_probe(struct platform_device *pdev) qcom->qscratch_base = devm_ioremap_resource(dev, parent_res); if (IS_ERR(qcom->qscratch_base)) { ret = PTR_ERR(qcom->qscratch_base); - goto clk_disable; + goto free_urs; }
ret = dwc3_qcom_setup_irq(pdev); if (ret) { dev_err(dev, "failed to setup IRQs, err=%d\n", ret); - goto clk_disable; + goto free_urs; }
/* @@ -837,7 +854,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
if (ret) { dev_err(dev, "failed to register DWC3 Core, err=%d\n", ret); - goto clk_disable; + goto free_urs; }
ret = dwc3_qcom_interconnect_init(qcom); @@ -871,6 +888,9 @@ static int dwc3_qcom_probe(struct platform_device *pdev) else platform_device_del(qcom->dwc3); platform_device_put(qcom->dwc3); +free_urs: + if (qcom->urs_usb) + dwc3_qcom_destroy_urs_usb_platdev(qcom->urs_usb); clk_disable: for (i = qcom->num_clocks - 1; i >= 0; i--) { clk_disable_unprepare(qcom->clks[i]); @@ -896,6 +916,9 @@ static int dwc3_qcom_remove(struct platform_device *pdev) platform_device_del(qcom->dwc3); platform_device_put(qcom->dwc3);
+ if (qcom->urs_usb) + dwc3_qcom_destroy_urs_usb_platdev(qcom->urs_usb); + for (i = qcom->num_clocks - 1; i >= 0; i--) { clk_disable_unprepare(qcom->clks[i]); clk_put(qcom->clks[i]);