1 // SPDX-License-Identifier: GPL-2.0
3 * u_f.c -- USB function utilities for Gadget stack
5 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com
8 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
12 #include <linux/usb/ch9.h>
14 struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
16 struct usb_request *req;
18 req = usb_ep_alloc_request(ep, GFP_ATOMIC);
20 req->length = usb_endpoint_dir_out(ep->desc) ?
21 usb_ep_align(ep, len) : len;
22 req->buf = kmalloc(req->length, GFP_ATOMIC);
24 usb_ep_free_request(ep, req);
30 EXPORT_SYMBOL_GPL(alloc_ep_req);