Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / gadget / u_f.h

diff --git a/kernel/drivers/usb/gadget/u_f.h b/kernel/drivers/usb/gadget/u_f.h
new file mode 100644 (file)
index 0000000..1d5f0eb
--- /dev/null
+++ b/kernel/drivers/usb/gadget/u_f.h
@@ -0,0 +1,52 @@
+/*
+ * u_f.h
+ *
+ * Utility definitions for USB functions
+ *
+ * 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.
+ */
+
+#ifndef __U_F_H__
+#define __U_F_H__
+
+/* Variable Length Array Macros **********************************************/
+#define vla_group(groupname) size_t groupname##__next = 0
+#define vla_group_size(groupname) groupname##__next
+
+#define vla_item(groupname, type, name, n) \
+       size_t groupname##_##name##__offset = ({                               \
+               size_t align_mask = __alignof__(type) - 1;                     \
+               size_t offset = (groupname##__next + align_mask) & ~align_mask;\
+               size_t size = (n) * sizeof(type);                              \
+               groupname##__next = offset + size;                             \
+               offset;                                                        \
+       })
+
+#define vla_item_with_sz(groupname, type, name, n) \
+       size_t groupname##_##name##__sz = (n) * sizeof(type);                  \
+       size_t groupname##_##name##__offset = ({                               \
+               size_t align_mask = __alignof__(type) - 1;                     \
+               size_t offset = (groupname##__next + align_mask) & ~align_mask;\
+               size_t size = groupname##_##name##__sz;                        \
+               groupname##__next = offset + size;                             \
+               offset;                                                        \
+       })
+
+#define vla_ptr(ptr, groupname, name) \
+       ((void *) ((char *)ptr + groupname##_##name##__offset))
+
+struct usb_ep;
+struct usb_request;
+
+struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len);
+
+#endif /* __U_F_H__ */
+
+