From 259b65b5ac0f3505d9d38f7d3aaf238439d9ef46 Mon Sep 17 00:00:00 2001
From: Lucas Stach <dev@lynxeye.de>
Date: Fri, 7 Feb 2014 09:48:51 +0100
Subject: [PATCH] usb: dfu: fix error path to avoid NULL ptr deref

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/usb/gadget/dfu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/dfu.c b/drivers/usb/gadget/dfu.c
index e15fc41b8..4d4c347ab 100644
--- a/drivers/usb/gadget/dfu.c
+++ b/drivers/usb/gadget/dfu.c
@@ -597,8 +597,10 @@ static int dfu_bind_config(struct usb_configuration *c)
 	func->disable = dfu_disable;
 
 	dfu->dnreq = usb_ep_alloc_request(c->cdev->gadget->ep0);
-	if (!dfu->dnreq)
+	if (!dfu->dnreq) {
 		printf("usb_ep_alloc_request failed\n");
+		goto out;
+	}
 	dfu->dnreq->buf = dma_alloc(CONFIG_USBD_DFU_XFER_SIZE);
 	dfu->dnreq->complete = dn_complete;
 	dfu->dnreq->zero = 0;