linux-kernel - [PATCH 5.10] usb: dwc3: dwc3-qcom: Add missing platform_device_put() in dwc3_qcom_acpi_register

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Date:   Fri, 3 Mar 2023 10:34:59 +0800
From:   Zheng Yejian <zhengyejian1@...wei.com>
To:     <gregkh@...uxfoundation.org>, <stable@...r.kernel.org>
CC:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <balbi@...nel.org>, <lee.jones@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <zhengyejian1@...wei.com>
Subject: [PATCH 5.10] usb: dwc3: dwc3-qcom: Add missing platform_device_put() in dwc3_qcom_acpi_register_core

From: Miaoqian Lin <linmq006@...il.com>

commit fa0ef93868a6062babe1144df2807a8b1d4924d2 upstream.

Add the missing platform_device_put() before return from
dwc3_qcom_acpi_register_core in the error handling case.

Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Link: https://lore.kernel.org/r/20211231113641.31474-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CVE: CVE-2023-22995
Fixes: 2bc02355f8ba ("usb: dwc3: qcom: Add support for booting with ACPI")
[Fix conflict due to lack of 8dc6e6dd1bee39cd65a232a17d51240fc65a0f4a]
Signed-off-by: Zheng Yejian <zhengyejian1@...wei.com>
---
 drivers/usb/dwc3/dwc3-qcom.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index dac13fe97811..416c94c612f5 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -613,8 +613,10 @@ static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
 	qcom->dwc3->dev.coherent_dma_mask = dev->coherent_dma_mask;
 
 	child_res = kcalloc(2, sizeof(*child_res), GFP_KERNEL);
-	if (!child_res)
+	if (!child_res) {
+		platform_device_put(qcom->dwc3);
 		return -ENOMEM;
+	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
@@ -650,10 +652,15 @@ static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
 	}
 
 	ret = platform_device_add(qcom->dwc3);
-	if (ret)
+	if (ret) {
 		dev_err(&pdev->dev, "failed to add device\n");
+		goto out;
+	}
+	kfree(child_res);
+	return 0;
 
 out:
+	platform_device_put(qcom->dwc3);
 	kfree(child_res);
 	return ret;
 }
-- 
2.25.1