[PATCH 4.4 11/79] usb: gadget: dwc2: fix memory leak in gadget_init()

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Grigor Tovmasyan <grigor.tovmas...@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.wah...@i2se.com>
Cc: Marek Szyprowski <m.szyprow...@samsung.com>
Tested-by: Stefan Wahren <stefan.wah...@i2se.com>
Tested-by: Marek Szyprowski <m.szyprow...@samsung.com>
Acked-by: Minas Harutyunyan <hmi...@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovma...@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@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;
 }