projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1efd54ea AP |
1 | /* |
| 2 | * u_f.c -- USB function utilities for Gadget stack | |
| 3 | * | |
| 4 | * Copyright (c) 2013 Samsung Electronics Co., Ltd. | |
| 5 | * http://www.samsung.com | |
| 6 | * | |
| 7 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/usb/gadget.h> | |
| 15 | #include "u_f.h" | |
| 16 | ||
| 17 | struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len) | |
| 18 | { | |
| 19 | struct usb_request *req; | |
| 20 | ||
| 21 | req = usb_ep_alloc_request(ep, GFP_ATOMIC); | |
| 22 | if (req) { | |
| 23 | req->length = len ?: default_len; | |
| 24 | req->buf = kmalloc(req->length, GFP_ATOMIC); | |
| 25 | if (!req->buf) { | |
| 26 | usb_ep_free_request(ep, req); | |
| 27 | req = NULL; | |
| 28 | } | |
| 29 | } | |
| 30 | return req; | |
| 31 | } | |
| 0700faaf | 32 | EXPORT_SYMBOL_GPL(alloc_ep_req); |