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 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 #ifndef __LIN_COMPAT_H__ 24 #define __LIN_COMPAT_H__ 25 26 #include <linux/compat.h> 27 28 /* common */ 29 #define spin_lock_init(...) 30 #define spin_lock(...) 31 #define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0) 32 #define spin_unlock(...) 33 #define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0) 34 #define disable_irq(...) 35 #define enable_irq(...) 36 37 #define mutex_init(...) 38 #define mutex_lock(...) 39 #define mutex_unlock(...) 40 41 #define GFP_KERNEL 0 42 43 #define IRQ_HANDLED 1 44 45 #define ENOTSUPP 524 /* Operation is not supported */ 46 47 #define BITS_PER_BYTE 8 48 #define BITS_TO_LONGS(nr) \ 49 DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) 50 #define DECLARE_BITMAP(name, bits) \ 51 unsigned long name[BITS_TO_LONGS(bits)] 52 53 #define small_const_nbits(nbits) \ 54 (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) 55 56 static inline void bitmap_zero(unsigned long *dst, int nbits) 57 { 58 if (small_const_nbits(nbits)) 59 *dst = 0UL; 60 else { 61 int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); 62 memset(dst, 0, len); 63 } 64 } 65 66 #define dma_cache_maint(addr, size, mode) cache_flush() 67 void cache_flush(void); 68 69 #endif /* __LIN_COMPAT_H__ */ 70