[PATCH] usb: gadget: fix bugon.cocci warnings

[kbuild test robot <lkp@intel.com>]

drivers/usb/gadget/udc/cadence_hsudc.c:1303:2-5: WARNING: Use BUG_ON instead of if condition followed by BUG.
Please make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)

 Use BUG_ON instead of a if condition followed by BUG.

Semantic patch information:
 This makes an effort to find cases where BUG() follows an if
 condition on an expression and replaces the if condition and BUG()
 with a BUG_ON having the conditional expression of the if statement
 as argument.

Generated by: scripts/coccinelle/misc/bugon.cocci

CC: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

Please take the patch only if it's a positive warning. Thanks!

 cadence_hsudc.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/usb/gadget/udc/cadence_hsudc.c
+++ b/drivers/usb/gadget/udc/cadence_hsudc.c
@@ -1299,8 +1299,7 @@ static void hsudc_ep_work(struct work_st
 
 	hsudc_ep->cur = hsudc_req;
 
-	if (!hsudc_req)
-		BUG();
+	BUG_ON(!hsudc_req);
 
 	spin_unlock(&hsudc_ep->s);