blob: f52fb321d26651f3deb45288fb2493cfdc5362f2 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* 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);