cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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u_f.c (690B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * u_f.c -- USB function utilities for Gadget stack
      4 *
      5 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
      6 *		http://www.samsung.com
      7 *
      8 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
      9 */
     10
     11#include "u_f.h"
     12#include <linux/usb/ch9.h>
     13
     14struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
     15{
     16	struct usb_request      *req;
     17
     18	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
     19	if (req) {
     20		req->length = usb_endpoint_dir_out(ep->desc) ?
     21			usb_ep_align(ep, len) : len;
     22		req->buf = kmalloc(req->length, GFP_ATOMIC);
     23		if (!req->buf) {
     24			usb_ep_free_request(ep, req);
     25			req = NULL;
     26		}
     27	}
     28	return req;
     29}
     30EXPORT_SYMBOL_GPL(alloc_ep_req);