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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/gadget/u_f.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/gadget/u_f.c')
-rw-r--r--drivers/usb/gadget/u_f.c30
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..6aea1ecb3
--- /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 <andrzejtp2010@gmail.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);