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usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement

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commit 1cffb1c664 upstream.

of_get_child_by_name() increments the reference counter of the OF node it
managed to find. So after the code is done using the device node, the
refcount must be decremented. Add missing of_node_put() invocation then
to the dwc3_qcom_of_register_core() method, since DWC3 OF node is being
used only there.

Fixes: a4333c3a6b ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20210212205521.14280-1-Sergey.Semin@baikalelectronics.ru
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Serge Semin
2021-02-12 23:55:19 +03:00
committed by Greg Kroah-Hartman
parent 32ad0eb74e
commit 10551fbc55
1 changed files with 6 additions and 3 deletions
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9
drivers/usb/dwc3/dwc3-qcom.c
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@@ -639,16 +639,19 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
ret = of_platform_populate(np, NULL, NULL, dev);
if (ret) {
dev_err(dev, "failed to register dwc3 core - %d\n", ret);
return ret;
goto node_put;
}
qcom->dwc3 = of_find_device_by_node(dwc3_np);
if (!qcom->dwc3) {
ret = -ENODEV;
dev_err(dev, "failed to get dwc3 platform device\n");
return -ENODEV;
}
return 0;
node_put:
of_node_put(dwc3_np);
return ret;
}
static int dwc3_qcom_probe(struct platform_device *pdev)