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 ff67cea..d4fe8d7 100644 (file)
--- 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;