linux-kernel - [PATCH v2] usb: dwc3: gadget: avoid memory leak when failing to allocate all eps

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Message-Id: <1378946567-28693-1-git-send-email-david.a.cohen@linux.intel.com>
Date:	Wed, 11 Sep 2013 17:42:47 -0700
From:	David Cohen <david.a.cohen@...ux.intel.com>
To:	balbi@...com, gregkh@...uxfoundation.org
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Cohen <david.a.cohen@...ux.intel.com>
Subject: [PATCH v2] usb: dwc3: gadget: avoid memory leak when failing to allocate all eps

If dwc3_gadget_init_endpoint() fails after allocate some of the eps, we
need to free their memory to avoid leak.

Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
---
 drivers/usb/dwc3/gadget.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index f168eae..5452c0f 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2611,15 +2611,13 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 	ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget);
 	if (ret) {
 		dev_err(dwc->dev, "failed to register udc\n");
-		goto err5;
+		goto err4;
 	}
 
 	return 0;
 
-err5:
-	dwc3_gadget_free_endpoints(dwc);
-
 err4:
+	dwc3_gadget_free_endpoints(dwc);
 	dma_free_coherent(dwc->dev, DWC3_EP0_BOUNCE_SIZE,
 			dwc->ep0_bounce, dwc->ep0_bounce_addr);
 
-- 
1.8.4.rc3

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