From: John W. Linville <linville@tuxdriver.com>
Date: Tue, 6 Jan 2015 19:49:47 +0000 (-0500)
Subject: usb: gadget: udc: avoid dereference before NULL check in ep_queue
X-Git-Tag: v3.19-rc5~11^2~7
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f26d29e34e203296140334087fa3c81168626d76;p=linux.git

usb: gadget: udc: avoid dereference before NULL check in ep_queue

Coverity: CID 1260069

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c
index ff67ceac77c4..d4fe8d769bd6 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_ep.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c
@@ -718,10 +718,11 @@ static int ep_queue(struct bdc_ep *ep, struct bdc_req *req)
 	struct bdc *bdc;
 	int ret = 0;
 
-	bdc = ep->bdc;
 	if (!req || !ep || !ep->usb_ep.desc)
 		return -EINVAL;
 
+	bdc = ep->bdc;
+
 	req->usb_req.actual = 0;
 	req->usb_req.status = -EINPROGRESS;
 	req->epnum = ep->ep_num;