1 /* 2 * Copyright (c) 2011 Samsung Electronics 3 * Lukasz Majewski <l.majewski@samsung.com> 4 * 5 * This is a Linux kernel compatibility layer for USB Gadget 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef __LIN_COMPAT_H__ 11 #define __LIN_COMPAT_H__ 12 13 #include <linux/compat.h> 14 15 /* common */ 16 #define spin_lock_init(...) 17 #define spin_lock(...) 18 #define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0) 19 #define spin_unlock(...) 20 #define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0) 21 #define disable_irq(...) 22 #define enable_irq(...) 23 24 #define mutex_init(...) 25 #define mutex_lock(...) 26 #define mutex_unlock(...) 27 28 #define GFP_KERNEL 0 29 30 #define IRQ_HANDLED 1 31 32 #define ENOTSUPP 524 /* Operation is not supported */ 33 34 #define BITS_PER_BYTE 8 35 #define BITS_TO_LONGS(nr) \ 36 DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) 37 #define DECLARE_BITMAP(name, bits) \ 38 unsigned long name[BITS_TO_LONGS(bits)] 39 40 #define small_const_nbits(nbits) \ 41 (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) 42 43 static inline void bitmap_zero(unsigned long *dst, int nbits) 44 { 45 if (small_const_nbits(nbits)) 46 *dst = 0UL; 47 else { 48 int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); 49 memset(dst, 0, len); 50 } 51 } 52 53 #define dma_cache_maint(addr, size, mode) cache_flush() 54 void cache_flush(void); 55 56 #endif /* __LIN_COMPAT_H__ */ 57