| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (c) 2011 Samsung Electronics |
| * Lukasz Majewski <l.majewski@samsung.com> |
| * |
| * This is a Linux kernel compatibility layer for USB Gadget |
| */ |
| |
| #ifndef __LIN_COMPAT_H__ |
| #define __LIN_COMPAT_H__ |
| |
| #include <linux/bitops.h> |
| #include <linux/compat.h> |
| |
| /* common */ |
| #define DECLARE_BITMAP(name, bits) \ |
| unsigned long name[BITS_TO_LONGS(bits)] |
| |
| #define small_const_nbits(nbits) \ |
| (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) |
| |
| static inline void bitmap_zero(unsigned long *dst, int nbits) |
| { |
| if (small_const_nbits(nbits)) |
| *dst = 0UL; |
| else { |
| int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); |
| memset(dst, 0, len); |
| } |
| } |
| |
| #define dma_cache_maint(addr, size, mode) cache_flush() |
| void cache_flush(void); |
| |
| #endif /* __LIN_COMPAT_H__ */ |
