2 * Copyright (c) 2011 Samsung Electronics
3 * Lukasz Majewski <l.majewski@samsung.com>
5 * This is a Linux kernel compatibility layer for USB Gadget
7 * SPDX-License-Identifier: GPL-2.0+
10 #ifndef __LIN_COMPAT_H__
11 #define __LIN_COMPAT_H__
13 #include <linux/bitops.h>
14 #include <linux/compat.h>
17 #define DECLARE_BITMAP(name, bits) \
18 unsigned long name[BITS_TO_LONGS(bits)]
20 #define small_const_nbits(nbits) \
21 (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
23 static inline void bitmap_zero(unsigned long *dst, int nbits)
25 if (small_const_nbits(nbits))
28 int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
33 #define dma_cache_maint(addr, size, mode) cache_flush()
34 void cache_flush(void);
36 #endif /* __LIN_COMPAT_H__ */