linux-kernel - [PATCH 2/2] usb: dwc3: st: add missing depopulate in probe error path

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Message-ID: <20240814093957.37940-2-krzysztof.kozlowski@linaro.org>
Date: Wed, 14 Aug 2024 11:39:57 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Patrice Chotard <patrice.chotard@...s.st.com>,
	Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <balbi@...com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Lee Jones <lee@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	stable@...r.kernel.org
Subject: [PATCH 2/2] usb: dwc3: st: add missing depopulate in probe error path

Depopulate device in probe error paths to fix leak of children
resources.

Fixes: f83fca0707c6 ("usb: dwc3: add ST dwc3 glue layer to manage dwc3 HC")
Cc: <stable@...r.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Context of my other cleanup patches (separate series to be sent soon)
will depend on this.
---
 drivers/usb/dwc3/dwc3-st.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
index a9cb04043f08..c8c7cd0c1796 100644
--- a/drivers/usb/dwc3/dwc3-st.c
+++ b/drivers/usb/dwc3/dwc3-st.c
@@ -266,7 +266,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	if (!child_pdev) {
 		dev_err(dev, "failed to find dwc3 core device\n");
 		ret = -ENODEV;
-		goto err_node_put;
+		goto depopulate;
 	}
 
 	dwc3_data->dr_mode = usb_get_dr_mode(&child_pdev->dev);
@@ -282,6 +282,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	ret = st_dwc3_drd_init(dwc3_data);
 	if (ret) {
 		dev_err(dev, "drd initialisation failed\n");
+		of_platform_depopulate(dev);
 		goto undo_softreset;
 	}
 
@@ -291,6 +292,8 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, dwc3_data);
 	return 0;
 
+depopulate:
+	of_platform_depopulate(dev);
 err_node_put:
 	of_node_put(child);
 undo_softreset:
-- 
2.43.0