forked from rrcarlosr/Jetpack
41 lines
936 B
C
41 lines
936 B
C
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/*
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* Copyright (c) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* This is a Linux kernel compatibility layer for USB Gadget
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __LIN_COMPAT_H__
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#define __LIN_COMPAT_H__
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#include <linux/compat.h>
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/* common */
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#define ENOTSUPP 524 /* Operation is not supported */
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#define BITS_PER_BYTE 8
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#define BITS_TO_LONGS(nr) \
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DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
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#define DECLARE_BITMAP(name, bits) \
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unsigned long name[BITS_TO_LONGS(bits)]
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#define small_const_nbits(nbits) \
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(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
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static inline void bitmap_zero(unsigned long *dst, int nbits)
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{
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if (small_const_nbits(nbits))
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*dst = 0UL;
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else {
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int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
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memset(dst, 0, len);
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}
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}
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#define dma_cache_maint(addr, size, mode) cache_flush()
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void cache_flush(void);
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#endif /* __LIN_COMPAT_H__ */
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