linux-kernel - [PATCH 5.4 251/453] usb: oxu210hp-hcd: Fix memory leak in oxu

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Date:   Mon, 28 Dec 2020 13:48:07 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hulk Robot <hulkci@...wei.com>,
        Zhang Qilong <zhangqilong3@...wei.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 251/453] usb: oxu210hp-hcd: Fix memory leak in oxu_create

From: Zhang Qilong <zhangqilong3@...wei.com>

[ Upstream commit e5548b05631ec3e6bfdaef1cad28c799545b791b ]

usb_create_hcd will alloc memory for hcd, and we should
call usb_put_hcd to free it when adding fails to prevent
memory leak.

Fixes: b92a78e582b1a ("usb host: Oxford OXU210HP HCD driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Link: https://lore.kernel.org/r/20201123145809.1456541-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/usb/host/oxu210hp-hcd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index e67242e437edc..65985247fc00f 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -4149,8 +4149,10 @@ static struct usb_hcd *oxu_create(struct platform_device *pdev,
 	oxu->is_otg = otg;
 
 	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
-	if (ret < 0)
+	if (ret < 0) {
+		usb_put_hcd(hcd);
 		return ERR_PTR(ret);
+	}
 
 	device_wakeup_enable(hcd->self.controller);
 	return hcd;
-- 
2.27.0