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

Coverity: CID 1260069 Signed-off-by: John W. Linville <[email protected]> Cc: Felipe Balbi <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
zuai · Jan 9, 2015 · f26d29e · f26d29e
1 parent f56e67f
commit f26d29e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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;