staging: emxx_udc: fix loop in _nbu2ss_nuke()

[ Upstream commit e0112a7c ]

The _nbu2ss_ep_done() function calls:

	list_del_init(&req->queue);

which means that the loop will never exit.

Fixes: ca3d253e ("Staging: emxx_udc: Iterate list using list_for_each_entry")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YKUd0sDyjm/lkJfJ@mwandaSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/staging/emxx_udc/emxx_udc.c

@@ -2148,7 +2148,7 @@ static int _nbu2ss_nuke(struct nbu2ss_udc *udc,
 			struct nbu2ss_ep *ep,
 			int status)
 {
-	struct nbu2ss_req *req;
+	struct nbu2ss_req *req, *n;
 
 	/* Endpoint Disable */
 	_nbu2ss_epn_exit(udc, ep);
@@ -2160,7 +2160,7 @@ static int _nbu2ss_nuke(struct nbu2ss_udc *udc,
 		return 0;
 
 	/* called with irqs blocked */
-	list_for_each_entry(req, &ep->queue, queue) {
+	list_for_each_entry_safe(req, n, &ep->queue, queue) {
 		_nbu2ss_ep_done(ep, req, status);
 	}