[MTD][MTDPART] Cleanup and document the erase region handling

[linux-2.6-omap-h63xx.git] / include / asm-xtensa / semaphore.h

diff --git a/include/asm-xtensa/semaphore.h b/include/asm-xtensa/semaphore.h
index f10c3487cd4c5cb26b18d2e92df574395c349594..d9b2034ed1d2ecd24bf648b333c8ad68e0d878d5 100644 (file)
--- a/include/asm-xtensa/semaphore.h
+++ b/include/asm-xtensa/semaphore.h
@@ -1,100 +1 @@
-/*
- * linux/include/asm-xtensa/semaphore.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
-
-#ifndef _XTENSA_SEMAPHORE_H
-#define _XTENSA_SEMAPHORE_H
-
-#include <asm/atomic.h>
-#include <asm/system.h>
-#include <linux/wait.h>
-#include <linux/rwsem.h>
-
-struct semaphore {
-       atomic_t count;
-       int sleepers;
-       wait_queue_head_t wait;
-};
-
-#define __SEMAPHORE_INITIALIZER(name,n)                                        \
-{                                                                      \
-       .count          = ATOMIC_INIT(n),                               \
-       .sleepers       = 0,                                            \
-       .wait           = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait)    \
-}
-
-#define __DECLARE_SEMAPHORE_GENERIC(name,count)                        \
-       struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
-
-#define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)
-#define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0)
-
-static inline void sema_init (struct semaphore *sem, int val)
-{
-       atomic_set(&sem->count, val);
-       sem->sleepers = 0;
-       init_waitqueue_head(&sem->wait);
-}
-
-static inline void init_MUTEX (struct semaphore *sem)
-{
-       sema_init(sem, 1);
-}
-
-static inline void init_MUTEX_LOCKED (struct semaphore *sem)
-{
-       sema_init(sem, 0);
-}
-
-asmlinkage void __down(struct semaphore * sem);
-asmlinkage int  __down_interruptible(struct semaphore * sem);
-asmlinkage int  __down_trylock(struct semaphore * sem);
-asmlinkage void __up(struct semaphore * sem);
-
-extern spinlock_t semaphore_wake_lock;
-
-static inline void down(struct semaphore * sem)
-{
-       might_sleep();
-
-       if (atomic_sub_return(1, &sem->count) < 0)
-               __down(sem);
-}
-
-static inline int down_interruptible(struct semaphore * sem)
-{
-       int ret = 0;
-
-       might_sleep();
-
-       if (atomic_sub_return(1, &sem->count) < 0)
-               ret = __down_interruptible(sem);
-       return ret;
-}
-
-static inline int down_trylock(struct semaphore * sem)
-{
-       int ret = 0;
-
-       if (atomic_sub_return(1, &sem->count) < 0)
-               ret = __down_trylock(sem);
-       return ret;
-}
-
-/*
- * Note! This is subtle. We jump to wake people up only if
- * the semaphore was negative (== somebody was waiting on it).
- */
-static inline void up(struct semaphore * sem)
-{
-       if (atomic_add_return(1, &sem->count) <= 0)
-               __up(sem);
-}
-
-#endif /* _XTENSA_SEMAPHORE_H */
+#include <linux/semaphore.h>