/*
   * Copyright (c) 2011 Samsung Electronics
   * Lukasz Majewski <l.majewski@samsung.com>
   *
   * This is a Linux kernel compatibility layer for USB Gadget
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  
  #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__ */