1 files changed, 30 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..dbaa46eee
--- /dev/null
+++ b/drivers/usb/gadget/u_f.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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>
+ */
+
+#include "u_f.h"
+#include <linux/usb/ch9.h>
+
+struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
+{
+	struct usb_request      *req;
+
+	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
+	if (req) {
+		req->length = usb_endpoint_dir_out(ep->desc) ?
+			usb_ep_align(ep, len) : 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);