sync with glibc and remove duplicated SEM_VALUE_MAX define

libpthread/linuxthreads/oldsemaphore.c

@@ -32,9 +32,6 @@ typedef struct {
     int sem_spinlock;
 } old_sem_t;
 
-/* Maximum value the semaphore can have.  */
-#define SEM_VALUE_MAX   ((int) ((~0u) >> 1))
-
 static inline int sem_compare_and_swap(old_sem_t *sem, long oldval, long newval)
 {
     return compare_and_swap(&sem->sem_status, oldval, newval, &sem->sem_spinlock);
@@ -63,7 +60,7 @@ int __old_sem_init(old_sem_t *sem, int pshared, unsigned int value)
 	errno = ENOSYS;
 	return -1;
     }
-  sem->sem_spinlock = 0;
+  sem->sem_spinlock = __LT_SPINLOCK_INIT;
   sem->sem_status = ((long)value << 1) + 1;
   return 0;
 }
@@ -90,7 +87,7 @@ int __old_sem_wait(old_sem_t * sem)
 
     while (1) {
 	/* Register extrication interface */
-	__pthread_set_own_extricate_if(self, &extr); 
+	__pthread_set_own_extricate_if(self, &extr);
 	do {
             oldstatus = sem->sem_status;
             if ((oldstatus & 1) && (oldstatus != 1))
@@ -103,12 +100,13 @@ int __old_sem_wait(old_sem_t * sem)
 	while (! sem_compare_and_swap(sem, oldstatus, newstatus));
 	if (newstatus & 1) {
 	    /* We got the semaphore. */
-	  __pthread_set_own_extricate_if(self, 0); 
+	    __pthread_set_own_extricate_if(self, 0);
+	    self->p_nextwaiting = NULL;
 	    return 0;
 	}
 	/* Wait for sem_post or cancellation */
 	suspend(self);
-	__pthread_set_own_extricate_if(self, 0); 
+	__pthread_set_own_extricate_if(self, 0);
 
 	/* This is a cancellation point */
 	if (self->p_canceled && self->p_cancelstate == PTHREAD_CANCEL_ENABLE) {