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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Stefan Wahren <stefan.wahren@i2se.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Minas Harutyunyan <hminas@synopsys.com>,
        Grigor Tovmasyan <tovmasya@synopsys.com>,
        Felipe Balbi <felipe.balbi@linux.intel.com>,
        Sasha Levin <alexander.levin@microsoft.com>
Subject: [PATCH 4.4 11/79] usb: gadget: dwc2: fix memory leak in gadget_init()
Date:   Thu, 23 Aug 2018 09:52:47 +0200
Message-Id: <20180823074919.407815478@linuxfoundation.org>
In-Reply-To: <20180823074918.641878835@linuxfoundation.org>
References: <20180823074918.641878835@linuxfoundation.org>
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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Grigor Tovmasyan <Grigor.Tovmasyan@synopsys.com>

[ Upstream commit 9bb073a053f0464ea74a4d4c331fdb7da58568d6 ]

Freed allocated request for ep0 to prevent memory leak in case when
dwc2_driver_probe() failed.

Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/dwc2/gadget.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3657,9 +3657,11 @@ int dwc2_gadget_init(struct dwc2_hsotg *
 	}
 
 	ret = usb_add_gadget_udc(dev, &hsotg->gadget);
-	if (ret)
+	if (ret) {
+		dwc2_hsotg_ep_free_request(&hsotg->eps_out[0]->ep,
+					   hsotg->ctrl_req);
 		return ret;
-
+	}
 	dwc2_hsotg_dump(hsotg);
 
 	return 0;
@@ -3672,6 +3674,7 @@ int dwc2_gadget_init(struct dwc2_hsotg *
 int dwc2_hsotg_remove(struct dwc2_hsotg *hsotg)
 {
 	usb_del_gadget_udc(&hsotg->gadget);
+	dwc2_hsotg_ep_free_request(&hsotg->eps_out[0]->ep, hsotg->ctrl_req);
 
 	return 0;
 }