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