linux-kernel - [PATCH] usb: dwc2: Fix memory leak in dwc2_hcd

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Date:   Mon, 30 May 2022 12:54:12 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Minas Harutyunyan <hminas@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Yang Yingliang <yangyingliang@...wei.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] usb: dwc2: Fix memory leak in dwc2_hcd_init

usb_create_hcd will alloc memory for hcd, and we should
call usb_put_hcd to free it when platform_get_resource()
fails to prevent memory leak.
goto error2 label instead error1 to fix this.

Fixes: 856e6e8e0f93 ("usb: dwc2: check return value after calling
platform_get_resource()")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/usb/dwc2/hcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index f63a27d11fac..3f107a06817d 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -5190,7 +5190,7 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		retval = -EINVAL;
-		goto error1;
+		goto error2;
 	}
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
-- 
2.25.1