1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (c) 2011 Samsung Electronics 3*4882a593Smuzhiyun * Lukasz Majewski <l.majewski@samsung.com> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * This is a Linux kernel compatibility layer for USB Gadget 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef __LIN_COMPAT_H__ 11*4882a593Smuzhiyun #define __LIN_COMPAT_H__ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/bitops.h> 14*4882a593Smuzhiyun #include <linux/compat.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* common */ 17*4882a593Smuzhiyun #define DECLARE_BITMAP(name, bits) \ 18*4882a593Smuzhiyun unsigned long name[BITS_TO_LONGS(bits)] 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define small_const_nbits(nbits) \ 21*4882a593Smuzhiyun (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) 22*4882a593Smuzhiyun bitmap_zero(unsigned long * dst,int nbits)23*4882a593Smuzhiyunstatic inline void bitmap_zero(unsigned long *dst, int nbits) 24*4882a593Smuzhiyun { 25*4882a593Smuzhiyun if (small_const_nbits(nbits)) 26*4882a593Smuzhiyun *dst = 0UL; 27*4882a593Smuzhiyun else { 28*4882a593Smuzhiyun int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); 29*4882a593Smuzhiyun memset(dst, 0, len); 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define dma_cache_maint(addr, size, mode) cache_flush() 34*4882a593Smuzhiyun void cache_flush(void); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #endif /* __LIN_COMPAT_H__ */ 37