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patch "usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement" added to usb-linus

PATCH [email protected] 1 participant 1 message Mar 9, 2021

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This is a note to let you know that I've just added the patch titled

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

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 58f3367b2359e88b83bcfca5b77d48b609eb2123 Mon Sep 17 00:00:00 2001
From: Serge Semin <[email protected]>
Date: Fri, 12 Feb 2021 23:55:19 +0300
Subject: usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement

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 a4333c3a6ba9 ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Cc stable <[email protected]>
---
 drivers/usb/dwc3/dwc3-qcom.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
drivers/usb/dwc3/dwc3-qcom.c +6 -3
index 730e8d6a2aa6..fcaf04483ad0 100644
@@ -653,16 +653,19 @@ 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 struct platform_device *
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