| /* | |
| * u_f.c -- USB function utilities for Gadget stack | |
| * | |
| * Copyright (c) 2013 Samsung Electronics Co., Ltd. | |
| * http://www.samsung.com | |
| * | |
| * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| */ | |
| #include "u_f.h" | |
| #include <linux/usb/ch9.h> | |
| struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len) | |
| { | |
| struct usb_request *req; | |
| req = usb_ep_alloc_request(ep, GFP_ATOMIC); | |
| if (req) { | |
| req->length = usb_endpoint_dir_out(ep->desc) ? | |
| usb_ep_align(ep, len) : len; | |
| req->buf = kmalloc(req->length, GFP_ATOMIC); | |
| if (!req->buf) { | |
| usb_ep_free_request(ep, req); | |
| req = NULL; | |
| } | |
| } | |
| return req; | |
| } | |
| EXPORT_SYMBOL_GPL(alloc_ep_req); |