diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/usb/gadget/u_f.c |
Initial import
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 000000000..c6276f026 --- /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_GPL(alloc_ep_req); |