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yaml --- r: 38201 b: refs/heads/master c: fac99d9 h: refs/heads/master i: 38199: e6ec130 v: v3
git-mirror · Oct 3, 2006 · 717ebfb · 717ebfb
1 parent 964bb9f
commit 717ebfb
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Showing 2 changed files with 9 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2914d4da172f53f71d0563d3c3bae14e496cbc86
+refs/heads/master: fac99d97469e7f91102f97101bea620e5f073196
diff --git a/trunk/include/asm-sh/spinlock.h b/trunk/include/asm-sh/spinlock.h
@@ -88,7 +88,14 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw)
 	__raw_spin_unlock(&rw->lock);
 }
 
-#define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
+static inline int __raw_read_trylock(raw_rwlock_t *lock)
+{
+	atomic_t *count = (atomic_t*)lock;
+	if (atomic_dec_return(count) >= 0)
+		return 1;
+	atomic_inc(count);
+	return 0;
+}
 
 static inline int __raw_write_trylock(raw_rwlock_t *rw)
 {