diff options
| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-11-07 11:41:26 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-11-26 23:41:32 +0400 |
| commit | 1efd54eab2b60c68c2ce75ea635306cef847d751 (patch) | |
| tree | b810315964acc35866cf4cda9c1032a6c71e83bf /drivers/usb/gadget/u_f.c | |
| parent | a01091e5ce866562ea2638a80f2241d8d6bde164 (diff) | |
| download | linux-1efd54eab2b60c68c2ce75ea635306cef847d751.tar.xz | |
usb: gadget: factor out alloc_ep_req
alloc_ep_req() is a function repeated in several modules.
Make a common implementation and use it.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/u_f.c')
| -rw-r--r-- | drivers/usb/gadget/u_f.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c new file mode 100644 index 000000000000..63b6642c162b --- /dev/null +++ b/drivers/usb/gadget/u_f.c @@ -0,0 +1,32 @@ +/* + * 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(alloc_ep_req); |