Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * u_f.c -- USB function utilities for Gadget stack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2013 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *		http://www.samsung.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "u_f.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/usb/ch9.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	struct usb_request      *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	if (req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		req->length = usb_endpoint_dir_out(ep->desc) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 			usb_ep_align(ep, len) : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		req->buf = kmalloc(req->length, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		if (!req->buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 			usb_ep_free_request(ep, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 			req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	return req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) EXPORT_SYMBOL_GPL(alloc_ep_req);