/*
   * 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 <linux/usb/gadget.h>
  #include "u_f.h"
  
  struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len)
  {
  	struct usb_request      *req;
  
  	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
  	if (req) {
  		req->length = len ?: default_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);